./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/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_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/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_be12927e-9564-4c64-bbc9-b4d86c940b55/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 dbfd30746a885b9515f914ecf1282b7cce3374e505c2f59173500b59d4c3c5b9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:36:46,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:36:46,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:36:46,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:36:46,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:36:46,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:36:46,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:36:47,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:36:47,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:36:47,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:36:47,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:36:47,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:36:47,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:36:47,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:36:47,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:36:47,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:36:47,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:36:47,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:36:47,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:36:47,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:36:47,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:36:47,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:36:47,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:36:47,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:36:47,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:36:47,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:36:47,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:36:47,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:36:47,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:36:47,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:36:47,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:36:47,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:36:47,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:36:47,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:36:47,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:36:47,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:36:47,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:36:47,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:36:47,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:36:47,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:36:47,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:36:47,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:36:47,092 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:36:47,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:36:47,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:36:47,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:36:47,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:36:47,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:36:47,100 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:36:47,100 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:36:47,100 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:36:47,101 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:36:47,102 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:36:47,102 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:36:47,102 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:36:47,102 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:36:47,103 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:36:47,103 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:36:47,103 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:36:47,103 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:36:47,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:36:47,104 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:36:47,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:36:47,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:36:47,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:36:47,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:36:47,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:36:47,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:36:47,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:36:47,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:36:47,111 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:36:47,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:36:47,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:36:47,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:36:47,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:36:47,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:36:47,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:36:47,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:36:47,113 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:36:47,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:36:47,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:36:47,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:36:47,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:36:47,114 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_be12927e-9564-4c64-bbc9-b4d86c940b55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbfd30746a885b9515f914ecf1282b7cce3374e505c2f59173500b59d4c3c5b9 [2021-11-20 23:36:47,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:36:47,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:36:47,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:36:47,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:36:47,445 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:36:47,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-20 23:36:47,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/data/f3fefff89/dc3b2d5503954002b28b353cf49a595d/FLAG4e27bd024 [2021-11-20 23:36:48,222 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:36:48,223 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-20 23:36:48,260 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/data/f3fefff89/dc3b2d5503954002b28b353cf49a595d/FLAG4e27bd024 [2021-11-20 23:36:48,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/data/f3fefff89/dc3b2d5503954002b28b353cf49a595d [2021-11-20 23:36:48,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:36:48,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:36:48,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:36:48,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:36:48,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:36:48,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:48" (1/1) ... [2021-11-20 23:36:48,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7015c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:48, skipping insertion in model container [2021-11-20 23:36:48,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:48" (1/1) ... [2021-11-20 23:36:48,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:36:48,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:36:48,980 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10929,10942] [2021-11-20 23:36:49,019 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14786,14799] [2021-11-20 23:36:49,045 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16007,16020] [2021-11-20 23:36:49,053 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16713,16726] [2021-11-20 23:36:49,080 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18257,18270] [2021-11-20 23:36:49,087 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18963,18976] [2021-11-20 23:36:49,094 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19992,20005] [2021-11-20 23:36:49,111 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22398,22411] [2021-11-20 23:36:49,117 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23107,23120] [2021-11-20 23:36:49,126 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24144,24157] [2021-11-20 23:36:49,140 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26040,26053] [2021-11-20 23:36:49,175 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29948,29961] [2021-11-20 23:36:49,181 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30657,30670] [2021-11-20 23:36:49,188 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31689,31702] [2021-11-20 23:36:49,201 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33580,33593] [2021-11-20 23:36:49,221 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36793,36806] [2021-11-20 23:36:49,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:36:49,453 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:36:49,595 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10929,10942] [2021-11-20 23:36:49,635 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14786,14799] [2021-11-20 23:36:49,655 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16007,16020] [2021-11-20 23:36:49,672 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16713,16726] [2021-11-20 23:36:49,700 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18257,18270] [2021-11-20 23:36:49,717 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18963,18976] [2021-11-20 23:36:49,775 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19992,20005] [2021-11-20 23:36:49,798 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22398,22411] [2021-11-20 23:36:49,818 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23107,23120] [2021-11-20 23:36:49,823 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24144,24157] [2021-11-20 23:36:49,841 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26040,26053] [2021-11-20 23:36:49,865 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29948,29961] [2021-11-20 23:36:49,870 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30657,30670] [2021-11-20 23:36:49,876 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31689,31702] [2021-11-20 23:36:49,885 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_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33580,33593] [2021-11-20 23:36:49,899 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36793,36806] [2021-11-20 23:36:50,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:36:50,085 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:36:50,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50 WrapperNode [2021-11-20 23:36:50,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:36:50,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:36:50,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:36:50,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:36:50,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50" (1/1) ... [2021-11-20 23:36:50,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50" (1/1) ... [2021-11-20 23:36:50,245 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3342 [2021-11-20 23:36:50,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:36:50,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:36:50,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:36:50,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:36:50,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50" (1/1) ... [2021-11-20 23:36:50,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50" (1/1) ... [2021-11-20 23:36:50,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50" (1/1) ... [2021-11-20 23:36:50,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50" (1/1) ... [2021-11-20 23:36:50,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50" (1/1) ... [2021-11-20 23:36:50,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50" (1/1) ... [2021-11-20 23:36:50,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50" (1/1) ... [2021-11-20 23:36:50,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:36:50,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:36:50,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:36:50,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:36:50,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50" (1/1) ... [2021-11-20 23:36:50,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:36:50,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:36:50,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:36:50,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:36:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:36:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:36:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:36:50,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:36:50,717 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:36:50,726 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:36:52,786 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:36:52,961 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:36:52,961 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:36:52,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:52 BoogieIcfgContainer [2021-11-20 23:36:52,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:36:52,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:36:52,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:36:52,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:36:52,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:36:48" (1/3) ... [2021-11-20 23:36:52,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2880c437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:52, skipping insertion in model container [2021-11-20 23:36:52,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:50" (2/3) ... [2021-11-20 23:36:52,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2880c437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:52, skipping insertion in model container [2021-11-20 23:36:52,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:52" (3/3) ... [2021-11-20 23:36:52,977 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-20 23:36:52,982 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:36:52,982 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-20 23:36:53,033 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:36:53,040 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:36:53,041 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-20 23:36:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 601 states, 584 states have (on average 1.856164383561644) internal successors, (1084), 600 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 23:36:53,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:53,092 INFO 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 23:36:53,093 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:53,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:53,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1484817577, now seen corresponding path program 1 times [2021-11-20 23:36:53,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:53,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655668226] [2021-11-20 23:36:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:53,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:53,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:53,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655668226] [2021-11-20 23:36:53,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655668226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:53,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:53,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:53,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752122032] [2021-11-20 23:36:53,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:53,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:53,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:53,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:53,617 INFO L87 Difference]: Start difference. First operand has 601 states, 584 states have (on average 1.856164383561644) internal successors, (1084), 600 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 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 23:36:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:54,268 INFO L93 Difference]: Finished difference Result 920 states and 1599 transitions. [2021-11-20 23:36:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:54,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 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 23:36:54,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:54,295 INFO L225 Difference]: With dead ends: 920 [2021-11-20 23:36:54,296 INFO L226 Difference]: Without dead ends: 483 [2021-11-20 23:36:54,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:54,313 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 2396 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:54,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2396 Valid, 590 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:36:54,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-20 23:36:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-11-20 23:36:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 467 states have (on average 1.2826552462526766) internal successors, (599), 482 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 599 transitions. [2021-11-20 23:36:54,401 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 599 transitions. Word has length 70 [2021-11-20 23:36:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:54,402 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 599 transitions. [2021-11-20 23:36:54,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 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 23:36:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 599 transitions. [2021-11-20 23:36:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 23:36:54,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:54,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:54,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:36:54,413 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:54,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:54,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1062417945, now seen corresponding path program 1 times [2021-11-20 23:36:54,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:54,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079281646] [2021-11-20 23:36:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:54,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:54,631 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:54,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079281646] [2021-11-20 23:36:54,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079281646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:54,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:54,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:54,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277846208] [2021-11-20 23:36:54,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:54,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:54,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:54,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:54,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:54,639 INFO L87 Difference]: Start difference. First operand 483 states and 599 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:54,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:54,991 INFO L93 Difference]: Finished difference Result 796 states and 1013 transitions. [2021-11-20 23:36:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:54,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-20 23:36:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:54,995 INFO L225 Difference]: With dead ends: 796 [2021-11-20 23:36:54,995 INFO L226 Difference]: Without dead ends: 431 [2021-11-20 23:36:54,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:54,999 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 1516 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:55,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 315 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:36:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-20 23:36:55,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2021-11-20 23:36:55,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 415 states have (on average 1.2963855421686747) internal successors, (538), 430 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 538 transitions. [2021-11-20 23:36:55,054 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 538 transitions. Word has length 71 [2021-11-20 23:36:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:55,055 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 538 transitions. [2021-11-20 23:36:55,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:55,056 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 538 transitions. [2021-11-20 23:36:55,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-20 23:36:55,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:55,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:55,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:36:55,061 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:55,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:55,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1527977194, now seen corresponding path program 1 times [2021-11-20 23:36:55,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:55,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651486617] [2021-11-20 23:36:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:55,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:55,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:55,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651486617] [2021-11-20 23:36:55,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651486617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:55,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:55,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:55,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925639393] [2021-11-20 23:36:55,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:55,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:55,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:55,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:55,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:55,214 INFO L87 Difference]: Start difference. First operand 431 states and 538 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:55,489 INFO L93 Difference]: Finished difference Result 744 states and 951 transitions. [2021-11-20 23:36:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:55,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-20 23:36:55,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:55,494 INFO L225 Difference]: With dead ends: 744 [2021-11-20 23:36:55,495 INFO L226 Difference]: Without dead ends: 393 [2021-11-20 23:36:55,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:55,499 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 1426 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:55,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 291 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:36:55,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-11-20 23:36:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-11-20 23:36:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 377 states have (on average 1.312997347480106) internal successors, (495), 392 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 495 transitions. [2021-11-20 23:36:55,543 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 495 transitions. Word has length 72 [2021-11-20 23:36:55,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:55,545 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 495 transitions. [2021-11-20 23:36:55,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 495 transitions. [2021-11-20 23:36:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 23:36:55,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:55,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:55,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:36:55,549 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:55,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:55,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1740804882, now seen corresponding path program 1 times [2021-11-20 23:36:55,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:55,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581174703] [2021-11-20 23:36:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:55,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:55,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:55,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581174703] [2021-11-20 23:36:55,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581174703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:55,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:55,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:55,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377682022] [2021-11-20 23:36:55,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:55,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:55,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:55,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:55,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:55,689 INFO L87 Difference]: Start difference. First operand 393 states and 495 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:56,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:56,094 INFO L93 Difference]: Finished difference Result 896 states and 1150 transitions. [2021-11-20 23:36:56,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:56,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-20 23:36:56,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:56,099 INFO L225 Difference]: With dead ends: 896 [2021-11-20 23:36:56,099 INFO L226 Difference]: Without dead ends: 561 [2021-11-20 23:36:56,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:56,104 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 1781 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:56,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1781 Valid, 422 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:36:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-11-20 23:36:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 501. [2021-11-20 23:36:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 485 states have (on average 1.3628865979381444) internal successors, (661), 500 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 661 transitions. [2021-11-20 23:36:56,139 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 661 transitions. Word has length 73 [2021-11-20 23:36:56,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:56,140 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 661 transitions. [2021-11-20 23:36:56,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 661 transitions. [2021-11-20 23:36:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-20 23:36:56,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:56,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:56,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:36:56,144 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:56,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash -759675733, now seen corresponding path program 1 times [2021-11-20 23:36:56,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:56,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873545119] [2021-11-20 23:36:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:56,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:56,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:56,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873545119] [2021-11-20 23:36:56,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873545119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:56,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:56,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:56,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397327038] [2021-11-20 23:36:56,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:56,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:56,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:56,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:56,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:56,264 INFO L87 Difference]: Start difference. First operand 501 states and 661 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:56,640 INFO L93 Difference]: Finished difference Result 944 states and 1263 transitions. [2021-11-20 23:36:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:56,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-20 23:36:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:56,645 INFO L225 Difference]: With dead ends: 944 [2021-11-20 23:36:56,645 INFO L226 Difference]: Without dead ends: 496 [2021-11-20 23:36:56,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:56,647 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1257 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:56,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 252 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:36:56,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-20 23:36:56,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2021-11-20 23:36:56,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3604166666666666) internal successors, (653), 495 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 653 transitions. [2021-11-20 23:36:56,696 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 653 transitions. Word has length 74 [2021-11-20 23:36:56,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:56,696 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 653 transitions. [2021-11-20 23:36:56,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 653 transitions. [2021-11-20 23:36:56,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 23:36:56,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:56,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:56,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:36:56,700 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:56,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:56,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1130154961, now seen corresponding path program 1 times [2021-11-20 23:36:56,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:56,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393359505] [2021-11-20 23:36:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:56,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:56,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:56,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393359505] [2021-11-20 23:36:56,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393359505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:56,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:56,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:36:56,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819015172] [2021-11-20 23:36:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:56,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:36:56,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:36:56,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:56,924 INFO L87 Difference]: Start difference. First operand 496 states and 653 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:57,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:57,530 INFO L93 Difference]: Finished difference Result 906 states and 1151 transitions. [2021-11-20 23:36:57,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:36:57,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-20 23:36:57,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:57,535 INFO L225 Difference]: With dead ends: 906 [2021-11-20 23:36:57,535 INFO L226 Difference]: Without dead ends: 678 [2021-11-20 23:36:57,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:36:57,537 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 2029 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:57,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2029 Valid, 589 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:36:57,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-11-20 23:36:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 496. [2021-11-20 23:36:57,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3583333333333334) internal successors, (652), 495 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 652 transitions. [2021-11-20 23:36:57,584 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 652 transitions. Word has length 75 [2021-11-20 23:36:57,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:57,586 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 652 transitions. [2021-11-20 23:36:57,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:57,586 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 652 transitions. [2021-11-20 23:36:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 23:36:57,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:57,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:57,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:36:57,593 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:57,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:57,594 INFO L85 PathProgramCache]: Analyzing trace with hash 496363608, now seen corresponding path program 1 times [2021-11-20 23:36:57,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:57,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871538781] [2021-11-20 23:36:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:57,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:57,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:57,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871538781] [2021-11-20 23:36:57,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871538781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:57,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:57,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:57,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104909998] [2021-11-20 23:36:57,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:57,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:57,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:57,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:57,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:57,758 INFO L87 Difference]: Start difference. First operand 496 states and 652 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:58,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:58,615 INFO L93 Difference]: Finished difference Result 728 states and 959 transitions. [2021-11-20 23:36:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:36:58,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-20 23:36:58,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:58,620 INFO L225 Difference]: With dead ends: 728 [2021-11-20 23:36:58,620 INFO L226 Difference]: Without dead ends: 584 [2021-11-20 23:36:58,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:36:58,622 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 1546 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:58,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 1085 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:36:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-11-20 23:36:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 496. [2021-11-20 23:36:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.35625) internal successors, (651), 495 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 651 transitions. [2021-11-20 23:36:58,672 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 651 transitions. Word has length 75 [2021-11-20 23:36:58,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:58,672 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 651 transitions. [2021-11-20 23:36:58,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 651 transitions. [2021-11-20 23:36:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 23:36:58,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:58,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:58,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:36:58,678 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1385408418, now seen corresponding path program 1 times [2021-11-20 23:36:58,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:58,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340496427] [2021-11-20 23:36:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:58,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:58,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:58,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340496427] [2021-11-20 23:36:58,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340496427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:58,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:58,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:58,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156765593] [2021-11-20 23:36:58,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:58,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:58,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:58,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:58,846 INFO L87 Difference]: Start difference. First operand 496 states and 651 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:59,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:59,954 INFO L93 Difference]: Finished difference Result 1046 states and 1383 transitions. [2021-11-20 23:36:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:36:59,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-20 23:36:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:59,960 INFO L225 Difference]: With dead ends: 1046 [2021-11-20 23:36:59,961 INFO L226 Difference]: Without dead ends: 941 [2021-11-20 23:36:59,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:36:59,962 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 1690 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:59,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1690 Valid, 1777 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:36:59,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-11-20 23:37:00,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 496. [2021-11-20 23:37:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3541666666666667) internal successors, (650), 495 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 650 transitions. [2021-11-20 23:37:00,012 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 650 transitions. Word has length 75 [2021-11-20 23:37:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:00,012 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 650 transitions. [2021-11-20 23:37:00,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 650 transitions. [2021-11-20 23:37:00,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 23:37:00,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:00,015 INFO 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] [2021-11-20 23:37:00,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:37:00,015 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:00,016 INFO L85 PathProgramCache]: Analyzing trace with hash -821108329, now seen corresponding path program 1 times [2021-11-20 23:37:00,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:00,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639366841] [2021-11-20 23:37:00,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:00,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:00,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:00,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639366841] [2021-11-20 23:37:00,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639366841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:00,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:00,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:37:00,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262545632] [2021-11-20 23:37:00,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:00,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:37:00,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:00,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:37:00,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:00,256 INFO L87 Difference]: Start difference. First operand 496 states and 650 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:02,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:02,410 INFO L93 Difference]: Finished difference Result 1491 states and 1971 transitions. [2021-11-20 23:37:02,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:37:02,411 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 23:37:02,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:02,419 INFO L225 Difference]: With dead ends: 1491 [2021-11-20 23:37:02,419 INFO L226 Difference]: Without dead ends: 1377 [2021-11-20 23:37:02,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:37:02,423 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 3703 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3703 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:02,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3703 Valid, 1611 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:37:02,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-11-20 23:37:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 500. [2021-11-20 23:37:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 484 states have (on average 1.3512396694214877) internal successors, (654), 499 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 654 transitions. [2021-11-20 23:37:02,492 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 654 transitions. Word has length 77 [2021-11-20 23:37:02,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:02,493 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 654 transitions. [2021-11-20 23:37:02,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 654 transitions. [2021-11-20 23:37:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 23:37:02,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:02,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:02,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:37:02,495 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:02,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:02,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1229953557, now seen corresponding path program 1 times [2021-11-20 23:37:02,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:02,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678754587] [2021-11-20 23:37:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:02,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:02,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:02,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678754587] [2021-11-20 23:37:02,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678754587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:02,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:02,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:02,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626442996] [2021-11-20 23:37:02,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:02,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:02,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:02,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:02,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:02,623 INFO L87 Difference]: Start difference. First operand 500 states and 654 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:03,626 INFO L93 Difference]: Finished difference Result 1013 states and 1327 transitions. [2021-11-20 23:37:03,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:03,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 23:37:03,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:03,634 INFO L225 Difference]: With dead ends: 1013 [2021-11-20 23:37:03,634 INFO L226 Difference]: Without dead ends: 921 [2021-11-20 23:37:03,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:03,635 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 1238 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:03,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 1284 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-11-20 23:37:03,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 500. [2021-11-20 23:37:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 484 states have (on average 1.3491735537190082) internal successors, (653), 499 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 653 transitions. [2021-11-20 23:37:03,699 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 653 transitions. Word has length 77 [2021-11-20 23:37:03,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:03,699 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 653 transitions. [2021-11-20 23:37:03,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:03,700 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 653 transitions. [2021-11-20 23:37:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 23:37:03,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:03,702 INFO 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] [2021-11-20 23:37:03,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:37:03,703 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:03,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:03,703 INFO L85 PathProgramCache]: Analyzing trace with hash -861851382, now seen corresponding path program 1 times [2021-11-20 23:37:03,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:03,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13434008] [2021-11-20 23:37:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:03,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:03,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:03,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13434008] [2021-11-20 23:37:03,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13434008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:03,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:03,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:37:03,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055722887] [2021-11-20 23:37:03,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:03,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:37:03,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:03,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:37:03,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:03,941 INFO L87 Difference]: Start difference. First operand 500 states and 653 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:05,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:05,880 INFO L93 Difference]: Finished difference Result 1484 states and 1959 transitions. [2021-11-20 23:37:05,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:37:05,881 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 23:37:05,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:05,889 INFO L225 Difference]: With dead ends: 1484 [2021-11-20 23:37:05,889 INFO L226 Difference]: Without dead ends: 1392 [2021-11-20 23:37:05,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:37:05,891 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 3500 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3500 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:05,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3500 Valid, 1461 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 23:37:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-11-20 23:37:05,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 504. [2021-11-20 23:37:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.346311475409836) internal successors, (657), 503 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 657 transitions. [2021-11-20 23:37:05,974 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 657 transitions. Word has length 77 [2021-11-20 23:37:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:05,974 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 657 transitions. [2021-11-20 23:37:05,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 657 transitions. [2021-11-20 23:37:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 23:37:05,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:05,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:05,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:37:05,978 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:05,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1582421198, now seen corresponding path program 1 times [2021-11-20 23:37:05,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:05,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437179215] [2021-11-20 23:37:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:05,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:06,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:06,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437179215] [2021-11-20 23:37:06,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437179215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:06,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:06,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:06,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940846796] [2021-11-20 23:37:06,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:06,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:06,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:06,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:06,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:06,099 INFO L87 Difference]: Start difference. First operand 504 states and 657 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:07,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:07,085 INFO L93 Difference]: Finished difference Result 1009 states and 1321 transitions. [2021-11-20 23:37:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:07,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 23:37:07,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:07,091 INFO L225 Difference]: With dead ends: 1009 [2021-11-20 23:37:07,091 INFO L226 Difference]: Without dead ends: 921 [2021-11-20 23:37:07,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:37:07,093 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 1868 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:07,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1868 Valid, 1241 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-11-20 23:37:07,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 504. [2021-11-20 23:37:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3442622950819672) internal successors, (656), 503 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 656 transitions. [2021-11-20 23:37:07,172 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 656 transitions. Word has length 77 [2021-11-20 23:37:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:07,172 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 656 transitions. [2021-11-20 23:37:07,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 656 transitions. [2021-11-20 23:37:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 23:37:07,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:07,175 INFO 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] [2021-11-20 23:37:07,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:37:07,175 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:07,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:07,176 INFO L85 PathProgramCache]: Analyzing trace with hash 981154930, now seen corresponding path program 1 times [2021-11-20 23:37:07,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:07,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315185500] [2021-11-20 23:37:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:07,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:07,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:07,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315185500] [2021-11-20 23:37:07,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315185500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:07,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:07,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:37:07,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276249516] [2021-11-20 23:37:07,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:07,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:37:07,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:37:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:37:07,337 INFO L87 Difference]: Start difference. First operand 504 states and 656 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:08,514 INFO L93 Difference]: Finished difference Result 852 states and 1117 transitions. [2021-11-20 23:37:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 23:37:08,514 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 23:37:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:08,518 INFO L225 Difference]: With dead ends: 852 [2021-11-20 23:37:08,518 INFO L226 Difference]: Without dead ends: 642 [2021-11-20 23:37:08,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-20 23:37:08,521 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1671 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:08,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 1486 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:08,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-20 23:37:08,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 504. [2021-11-20 23:37:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3401639344262295) internal successors, (654), 503 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 654 transitions. [2021-11-20 23:37:08,597 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 654 transitions. Word has length 77 [2021-11-20 23:37:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:08,598 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 654 transitions. [2021-11-20 23:37:08,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:08,598 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 654 transitions. [2021-11-20 23:37:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 23:37:08,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:08,600 INFO 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] [2021-11-20 23:37:08,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:37:08,600 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:08,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash -817405268, now seen corresponding path program 1 times [2021-11-20 23:37:08,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:08,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092213607] [2021-11-20 23:37:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:08,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:08,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:08,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092213607] [2021-11-20 23:37:08,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092213607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:08,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:08,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:08,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884826261] [2021-11-20 23:37:08,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:08,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:08,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:08,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:08,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:08,725 INFO L87 Difference]: Start difference. First operand 504 states and 654 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:09,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:09,646 INFO L93 Difference]: Finished difference Result 1019 states and 1330 transitions. [2021-11-20 23:37:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:09,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 23:37:09,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:09,652 INFO L225 Difference]: With dead ends: 1019 [2021-11-20 23:37:09,652 INFO L226 Difference]: Without dead ends: 921 [2021-11-20 23:37:09,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:09,653 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 1853 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:09,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 1254 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:09,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-11-20 23:37:09,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 504. [2021-11-20 23:37:09,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3360655737704918) internal successors, (652), 503 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:09,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 652 transitions. [2021-11-20 23:37:09,732 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 652 transitions. Word has length 77 [2021-11-20 23:37:09,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:09,732 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 652 transitions. [2021-11-20 23:37:09,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 652 transitions. [2021-11-20 23:37:09,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 23:37:09,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:09,735 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:09,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:37:09,735 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:09,736 INFO L85 PathProgramCache]: Analyzing trace with hash -408560040, now seen corresponding path program 1 times [2021-11-20 23:37:09,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:09,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283096426] [2021-11-20 23:37:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:09,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:09,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:09,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283096426] [2021-11-20 23:37:09,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283096426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:09,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:09,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:09,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583003386] [2021-11-20 23:37:09,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:09,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:09,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:09,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:09,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:09,848 INFO L87 Difference]: Start difference. First operand 504 states and 652 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:10,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:10,890 INFO L93 Difference]: Finished difference Result 1069 states and 1401 transitions. [2021-11-20 23:37:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:10,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 23:37:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:10,895 INFO L225 Difference]: With dead ends: 1069 [2021-11-20 23:37:10,895 INFO L226 Difference]: Without dead ends: 945 [2021-11-20 23:37:10,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:37:10,897 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 1531 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:10,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 1986 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-11-20 23:37:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 504. [2021-11-20 23:37:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3319672131147542) internal successors, (650), 503 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 650 transitions. [2021-11-20 23:37:10,978 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 650 transitions. Word has length 77 [2021-11-20 23:37:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:10,978 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 650 transitions. [2021-11-20 23:37:10,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:10,979 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 650 transitions. [2021-11-20 23:37:10,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 23:37:10,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:10,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:10,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 23:37:10,981 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash 882708282, now seen corresponding path program 1 times [2021-11-20 23:37:10,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:10,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058042121] [2021-11-20 23:37:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:10,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:11,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:11,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058042121] [2021-11-20 23:37:11,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058042121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:11,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:11,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:11,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159195462] [2021-11-20 23:37:11,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:11,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:37:11,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:11,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:37:11,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:37:11,182 INFO L87 Difference]: Start difference. First operand 504 states and 650 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:12,852 INFO L93 Difference]: Finished difference Result 1103 states and 1441 transitions. [2021-11-20 23:37:12,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 23:37:12,852 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-20 23:37:12,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:12,857 INFO L225 Difference]: With dead ends: 1103 [2021-11-20 23:37:12,857 INFO L226 Difference]: Without dead ends: 989 [2021-11-20 23:37:12,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2021-11-20 23:37:12,859 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 1618 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 3276 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:12,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1618 Valid, 3276 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:37:12,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2021-11-20 23:37:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 500. [2021-11-20 23:37:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 484 states have (on average 1.3326446280991735) internal successors, (645), 499 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 645 transitions. [2021-11-20 23:37:12,924 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 645 transitions. Word has length 78 [2021-11-20 23:37:12,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:12,924 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 645 transitions. [2021-11-20 23:37:12,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 645 transitions. [2021-11-20 23:37:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 23:37:12,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:12,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:12,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 23:37:12,926 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:12,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:12,927 INFO L85 PathProgramCache]: Analyzing trace with hash -180251782, now seen corresponding path program 1 times [2021-11-20 23:37:12,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:12,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612236701] [2021-11-20 23:37:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:12,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:13,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:13,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612236701] [2021-11-20 23:37:13,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612236701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:13,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:13,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:13,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222464111] [2021-11-20 23:37:13,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:13,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:13,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:13,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:13,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:13,033 INFO L87 Difference]: Start difference. First operand 500 states and 645 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:13,968 INFO L93 Difference]: Finished difference Result 1009 states and 1312 transitions. [2021-11-20 23:37:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:13,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-20 23:37:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:13,974 INFO L225 Difference]: With dead ends: 1009 [2021-11-20 23:37:13,974 INFO L226 Difference]: Without dead ends: 917 [2021-11-20 23:37:13,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:13,975 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 1640 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:13,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 1506 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-11-20 23:37:14,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 496. [2021-11-20 23:37:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3333333333333333) internal successors, (640), 495 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 640 transitions. [2021-11-20 23:37:14,059 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 640 transitions. Word has length 78 [2021-11-20 23:37:14,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:14,059 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 640 transitions. [2021-11-20 23:37:14,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 640 transitions. [2021-11-20 23:37:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:14,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:14,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:14,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 23:37:14,061 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1887565433, now seen corresponding path program 1 times [2021-11-20 23:37:14,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:14,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242608874] [2021-11-20 23:37:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:14,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:14,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:14,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242608874] [2021-11-20 23:37:14,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242608874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:14,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:14,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:14,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476954286] [2021-11-20 23:37:14,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:14,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:14,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:14,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:14,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:14,192 INFO L87 Difference]: Start difference. First operand 496 states and 640 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:15,177 INFO L93 Difference]: Finished difference Result 975 states and 1258 transitions. [2021-11-20 23:37:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:15,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:15,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:15,183 INFO L225 Difference]: With dead ends: 975 [2021-11-20 23:37:15,183 INFO L226 Difference]: Without dead ends: 893 [2021-11-20 23:37:15,184 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 23:37:15,184 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 1480 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:15,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 1347 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-11-20 23:37:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 496. [2021-11-20 23:37:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.33125) internal successors, (639), 495 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 639 transitions. [2021-11-20 23:37:15,268 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 639 transitions. Word has length 79 [2021-11-20 23:37:15,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:15,268 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 639 transitions. [2021-11-20 23:37:15,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 639 transitions. [2021-11-20 23:37:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:15,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:15,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:15,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 23:37:15,271 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:15,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:15,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1141656959, now seen corresponding path program 1 times [2021-11-20 23:37:15,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:15,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743703410] [2021-11-20 23:37:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:15,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:15,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:15,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743703410] [2021-11-20 23:37:15,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743703410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:15,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:15,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:15,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749032668] [2021-11-20 23:37:15,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:15,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:15,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:15,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:15,374 INFO L87 Difference]: Start difference. First operand 496 states and 639 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:16,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:16,436 INFO L93 Difference]: Finished difference Result 978 states and 1260 transitions. [2021-11-20 23:37:16,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:16,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:16,440 INFO L225 Difference]: With dead ends: 978 [2021-11-20 23:37:16,440 INFO L226 Difference]: Without dead ends: 893 [2021-11-20 23:37:16,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:37:16,442 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1028 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:16,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 1616 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-11-20 23:37:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 496. [2021-11-20 23:37:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3291666666666666) internal successors, (638), 495 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 638 transitions. [2021-11-20 23:37:16,516 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 638 transitions. Word has length 79 [2021-11-20 23:37:16,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:16,517 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 638 transitions. [2021-11-20 23:37:16,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 638 transitions. [2021-11-20 23:37:16,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:16,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:16,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:16,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 23:37:16,519 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:16,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1896793534, now seen corresponding path program 1 times [2021-11-20 23:37:16,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:16,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918880778] [2021-11-20 23:37:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:16,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:16,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:16,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918880778] [2021-11-20 23:37:16,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918880778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:16,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:16,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:16,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047825598] [2021-11-20 23:37:16,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:16,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:16,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:16,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:16,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:16,624 INFO L87 Difference]: Start difference. First operand 496 states and 638 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:17,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:17,574 INFO L93 Difference]: Finished difference Result 978 states and 1258 transitions. [2021-11-20 23:37:17,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:17,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:17,578 INFO L225 Difference]: With dead ends: 978 [2021-11-20 23:37:17,578 INFO L226 Difference]: Without dead ends: 893 [2021-11-20 23:37:17,578 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 23:37:17,579 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 1060 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:17,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 1600 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:17,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-11-20 23:37:17,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 496. [2021-11-20 23:37:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.3270833333333334) internal successors, (637), 495 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 637 transitions. [2021-11-20 23:37:17,644 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 637 transitions. Word has length 79 [2021-11-20 23:37:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:17,645 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 637 transitions. [2021-11-20 23:37:17,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 637 transitions. [2021-11-20 23:37:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:17,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:17,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:17,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 23:37:17,647 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:17,648 INFO L85 PathProgramCache]: Analyzing trace with hash -485976660, now seen corresponding path program 1 times [2021-11-20 23:37:17,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:17,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587906586] [2021-11-20 23:37:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:17,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:17,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:17,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587906586] [2021-11-20 23:37:17,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587906586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:17,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:17,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:37:17,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489963991] [2021-11-20 23:37:17,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:17,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:37:17,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:17,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:37:17,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:17,838 INFO L87 Difference]: Start difference. First operand 496 states and 637 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:19,798 INFO L93 Difference]: Finished difference Result 1484 states and 1942 transitions. [2021-11-20 23:37:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:37:19,799 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:19,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:19,805 INFO L225 Difference]: With dead ends: 1484 [2021-11-20 23:37:19,805 INFO L226 Difference]: Without dead ends: 1387 [2021-11-20 23:37:19,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:37:19,806 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 2913 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:19,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2913 Valid, 1718 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:37:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2021-11-20 23:37:19,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 500. [2021-11-20 23:37:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 484 states have (on average 1.3243801652892562) internal successors, (641), 499 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 641 transitions. [2021-11-20 23:37:19,885 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 641 transitions. Word has length 79 [2021-11-20 23:37:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:19,885 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 641 transitions. [2021-11-20 23:37:19,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 641 transitions. [2021-11-20 23:37:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:19,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:19,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:19,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 23:37:19,888 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash -328806928, now seen corresponding path program 1 times [2021-11-20 23:37:19,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:19,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277069657] [2021-11-20 23:37:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:19,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:19,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:19,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277069657] [2021-11-20 23:37:19,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277069657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:19,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:19,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:19,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969132506] [2021-11-20 23:37:19,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:19,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:19,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:19,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:19,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:19,987 INFO L87 Difference]: Start difference. First operand 500 states and 641 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:20,872 INFO L93 Difference]: Finished difference Result 979 states and 1258 transitions. [2021-11-20 23:37:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:20,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:20,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:20,876 INFO L225 Difference]: With dead ends: 979 [2021-11-20 23:37:20,876 INFO L226 Difference]: Without dead ends: 897 [2021-11-20 23:37:20,877 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 23:37:20,877 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 1470 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:20,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 1366 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:20,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-11-20 23:37:20,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2021-11-20 23:37:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 484 states have (on average 1.322314049586777) internal successors, (640), 499 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:20,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 640 transitions. [2021-11-20 23:37:20,954 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 640 transitions. Word has length 79 [2021-11-20 23:37:20,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:20,955 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 640 transitions. [2021-11-20 23:37:20,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:20,955 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 640 transitions. [2021-11-20 23:37:20,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:20,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:20,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:20,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 23:37:20,957 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:20,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1594434658, now seen corresponding path program 1 times [2021-11-20 23:37:20,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:20,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260128234] [2021-11-20 23:37:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:20,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:21,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:21,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260128234] [2021-11-20 23:37:21,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260128234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:21,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:21,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:21,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411687989] [2021-11-20 23:37:21,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:21,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:21,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:21,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:21,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:21,054 INFO L87 Difference]: Start difference. First operand 500 states and 640 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:21,870 INFO L93 Difference]: Finished difference Result 902 states and 1151 transitions. [2021-11-20 23:37:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:21,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:21,874 INFO L225 Difference]: With dead ends: 902 [2021-11-20 23:37:21,874 INFO L226 Difference]: Without dead ends: 897 [2021-11-20 23:37:21,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:37:21,875 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 1426 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:21,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 1409 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:37:21,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-11-20 23:37:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2021-11-20 23:37:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 484 states have (on average 1.3202479338842976) internal successors, (639), 499 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 639 transitions. [2021-11-20 23:37:21,957 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 639 transitions. Word has length 79 [2021-11-20 23:37:21,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:21,958 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 639 transitions. [2021-11-20 23:37:21,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 639 transitions. [2021-11-20 23:37:21,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:21,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:21,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:21,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 23:37:21,960 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:21,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:21,961 INFO L85 PathProgramCache]: Analyzing trace with hash 319887148, now seen corresponding path program 1 times [2021-11-20 23:37:21,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:21,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829927876] [2021-11-20 23:37:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:21,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:22,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:22,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829927876] [2021-11-20 23:37:22,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829927876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:22,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:22,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:22,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392775889] [2021-11-20 23:37:22,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:22,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:22,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:22,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:22,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:22,058 INFO L87 Difference]: Start difference. First operand 500 states and 639 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:23,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:23,028 INFO L93 Difference]: Finished difference Result 979 states and 1255 transitions. [2021-11-20 23:37:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:23,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:23,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:23,032 INFO L225 Difference]: With dead ends: 979 [2021-11-20 23:37:23,032 INFO L226 Difference]: Without dead ends: 897 [2021-11-20 23:37:23,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:37:23,035 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1044 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:23,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 1465 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-11-20 23:37:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2021-11-20 23:37:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 484 states have (on average 1.3181818181818181) internal successors, (638), 499 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 638 transitions. [2021-11-20 23:37:23,145 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 638 transitions. Word has length 79 [2021-11-20 23:37:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:23,146 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 638 transitions. [2021-11-20 23:37:23,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 638 transitions. [2021-11-20 23:37:23,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:23,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:23,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:23,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 23:37:23,148 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:23,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:23,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1334706002, now seen corresponding path program 1 times [2021-11-20 23:37:23,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:23,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597748978] [2021-11-20 23:37:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:23,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:23,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:23,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597748978] [2021-11-20 23:37:23,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597748978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:23,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:23,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:23,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464088116] [2021-11-20 23:37:23,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:23,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:23,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:23,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:23,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:23,250 INFO L87 Difference]: Start difference. First operand 500 states and 638 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:24,051 INFO L93 Difference]: Finished difference Result 977 states and 1251 transitions. [2021-11-20 23:37:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:24,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:24,055 INFO L225 Difference]: With dead ends: 977 [2021-11-20 23:37:24,055 INFO L226 Difference]: Without dead ends: 897 [2021-11-20 23:37:24,056 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 23:37:24,057 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1465 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:24,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1465 Valid, 1287 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:37:24,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-11-20 23:37:24,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2021-11-20 23:37:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 484 states have (on average 1.3161157024793388) internal successors, (637), 499 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 637 transitions. [2021-11-20 23:37:24,137 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 637 transitions. Word has length 79 [2021-11-20 23:37:24,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:24,137 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 637 transitions. [2021-11-20 23:37:24,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:24,138 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 637 transitions. [2021-11-20 23:37:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:24,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:24,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:24,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 23:37:24,139 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:24,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1154349460, now seen corresponding path program 1 times [2021-11-20 23:37:24,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:24,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958866666] [2021-11-20 23:37:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:24,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:24,229 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:24,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958866666] [2021-11-20 23:37:24,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958866666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:24,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:24,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:24,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898418865] [2021-11-20 23:37:24,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:24,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:24,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:24,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:24,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:24,232 INFO L87 Difference]: Start difference. First operand 500 states and 637 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:25,121 INFO L93 Difference]: Finished difference Result 1021 states and 1316 transitions. [2021-11-20 23:37:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:25,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:25,125 INFO L225 Difference]: With dead ends: 1021 [2021-11-20 23:37:25,125 INFO L226 Difference]: Without dead ends: 917 [2021-11-20 23:37:25,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:37:25,126 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1770 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:25,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1770 Valid, 1414 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:37:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-11-20 23:37:25,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 500. [2021-11-20 23:37:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 484 states have (on average 1.31198347107438) internal successors, (635), 499 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 635 transitions. [2021-11-20 23:37:25,196 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 635 transitions. Word has length 79 [2021-11-20 23:37:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:25,196 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 635 transitions. [2021-11-20 23:37:25,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 635 transitions. [2021-11-20 23:37:25,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:25,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:25,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:25,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 23:37:25,198 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1228420734, now seen corresponding path program 1 times [2021-11-20 23:37:25,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:25,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668615046] [2021-11-20 23:37:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:25,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:25,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:25,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668615046] [2021-11-20 23:37:25,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668615046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:25,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:25,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:25,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148143498] [2021-11-20 23:37:25,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:25,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:25,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:25,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:25,291 INFO L87 Difference]: Start difference. First operand 500 states and 635 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:26,182 INFO L93 Difference]: Finished difference Result 985 states and 1257 transitions. [2021-11-20 23:37:26,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:26,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:26,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:26,186 INFO L225 Difference]: With dead ends: 985 [2021-11-20 23:37:26,186 INFO L226 Difference]: Without dead ends: 897 [2021-11-20 23:37:26,186 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 23:37:26,186 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1074 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:26,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1074 Valid, 1510 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-11-20 23:37:26,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2021-11-20 23:37:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 484 states have (on average 1.3078512396694215) internal successors, (633), 499 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 633 transitions. [2021-11-20 23:37:26,282 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 633 transitions. Word has length 79 [2021-11-20 23:37:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:26,282 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 633 transitions. [2021-11-20 23:37:26,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:26,282 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 633 transitions. [2021-11-20 23:37:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:26,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:26,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:26,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 23:37:26,283 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:26,284 INFO L85 PathProgramCache]: Analyzing trace with hash -327266232, now seen corresponding path program 1 times [2021-11-20 23:37:26,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:26,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110865] [2021-11-20 23:37:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:26,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:26,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:26,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110865] [2021-11-20 23:37:26,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:26,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:26,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:37:26,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827617765] [2021-11-20 23:37:26,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:26,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:37:26,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:37:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:26,451 INFO L87 Difference]: Start difference. First operand 500 states and 633 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:28,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:28,368 INFO L93 Difference]: Finished difference Result 1565 states and 2036 transitions. [2021-11-20 23:37:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:37:28,369 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:28,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:28,374 INFO L225 Difference]: With dead ends: 1565 [2021-11-20 23:37:28,374 INFO L226 Difference]: Without dead ends: 1421 [2021-11-20 23:37:28,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:37:28,375 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 2953 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2953 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:28,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2953 Valid, 1944 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:37:28,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2021-11-20 23:37:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 508. [2021-11-20 23:37:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3028455284552845) internal successors, (641), 507 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:28,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 641 transitions. [2021-11-20 23:37:28,453 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 641 transitions. Word has length 79 [2021-11-20 23:37:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:28,453 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 641 transitions. [2021-11-20 23:37:28,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:28,453 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 641 transitions. [2021-11-20 23:37:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:28,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:28,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:28,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-20 23:37:28,455 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:28,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1076267745, now seen corresponding path program 1 times [2021-11-20 23:37:28,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:28,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578861906] [2021-11-20 23:37:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:28,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:28,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:28,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578861906] [2021-11-20 23:37:28,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578861906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:28,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:28,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:28,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771441888] [2021-11-20 23:37:28,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:28,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:28,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:28,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:28,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:28,550 INFO L87 Difference]: Start difference. First operand 508 states and 641 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:29,420 INFO L93 Difference]: Finished difference Result 910 states and 1150 transitions. [2021-11-20 23:37:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:29,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:29,424 INFO L225 Difference]: With dead ends: 910 [2021-11-20 23:37:29,424 INFO L226 Difference]: Without dead ends: 905 [2021-11-20 23:37:29,424 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 23:37:29,425 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1445 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:29,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 1367 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:37:29,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-11-20 23:37:29,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 508. [2021-11-20 23:37:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.298780487804878) internal successors, (639), 507 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 639 transitions. [2021-11-20 23:37:29,508 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 639 transitions. Word has length 79 [2021-11-20 23:37:29,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:29,508 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 639 transitions. [2021-11-20 23:37:29,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:29,509 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 639 transitions. [2021-11-20 23:37:29,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:29,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:29,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:29,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-20 23:37:29,510 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:29,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:29,511 INFO L85 PathProgramCache]: Analyzing trace with hash 835929357, now seen corresponding path program 1 times [2021-11-20 23:37:29,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:29,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961318761] [2021-11-20 23:37:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:29,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:29,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:29,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961318761] [2021-11-20 23:37:29,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961318761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:29,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:29,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:37:29,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031936061] [2021-11-20 23:37:29,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:29,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:37:29,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:29,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:37:29,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:29,680 INFO L87 Difference]: Start difference. First operand 508 states and 639 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:31,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:31,595 INFO L93 Difference]: Finished difference Result 1420 states and 1837 transitions. [2021-11-20 23:37:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:37:31,596 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:31,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:31,602 INFO L225 Difference]: With dead ends: 1420 [2021-11-20 23:37:31,603 INFO L226 Difference]: Without dead ends: 1403 [2021-11-20 23:37:31,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:37:31,604 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 3171 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3171 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:31,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3171 Valid, 1638 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:37:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-11-20 23:37:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 516. [2021-11-20 23:37:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 500 states have (on average 1.294) internal successors, (647), 515 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 647 transitions. [2021-11-20 23:37:31,689 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 647 transitions. Word has length 79 [2021-11-20 23:37:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:31,689 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 647 transitions. [2021-11-20 23:37:31,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 647 transitions. [2021-11-20 23:37:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:31,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:31,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:31,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-20 23:37:31,690 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:31,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:31,690 INFO L85 PathProgramCache]: Analyzing trace with hash -565396271, now seen corresponding path program 1 times [2021-11-20 23:37:31,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:31,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009839398] [2021-11-20 23:37:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:31,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:31,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:31,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009839398] [2021-11-20 23:37:31,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009839398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:31,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:31,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:31,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822521393] [2021-11-20 23:37:31,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:31,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:31,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:31,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:31,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:31,784 INFO L87 Difference]: Start difference. First operand 516 states and 647 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:32,782 INFO L93 Difference]: Finished difference Result 997 states and 1264 transitions. [2021-11-20 23:37:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:32,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:32,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:32,787 INFO L225 Difference]: With dead ends: 997 [2021-11-20 23:37:32,787 INFO L226 Difference]: Without dead ends: 913 [2021-11-20 23:37:32,788 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 23:37:32,788 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1049 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:32,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1049 Valid, 1634 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2021-11-20 23:37:32,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 516. [2021-11-20 23:37:32,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 500 states have (on average 1.29) internal successors, (645), 515 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 645 transitions. [2021-11-20 23:37:32,872 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 645 transitions. Word has length 79 [2021-11-20 23:37:32,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:32,872 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 645 transitions. [2021-11-20 23:37:32,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 645 transitions. [2021-11-20 23:37:32,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:37:32,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:32,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:32,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-20 23:37:32,874 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:32,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:32,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1831404320, now seen corresponding path program 1 times [2021-11-20 23:37:32,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:32,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311488263] [2021-11-20 23:37:32,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:32,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:32,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:32,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311488263] [2021-11-20 23:37:32,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311488263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:32,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:32,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:32,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676796148] [2021-11-20 23:37:32,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:32,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:32,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:32,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:32,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:32,971 INFO L87 Difference]: Start difference. First operand 516 states and 645 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:33,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:33,900 INFO L93 Difference]: Finished difference Result 918 states and 1154 transitions. [2021-11-20 23:37:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:33,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 23:37:33,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:33,903 INFO L225 Difference]: With dead ends: 918 [2021-11-20 23:37:33,903 INFO L226 Difference]: Without dead ends: 913 [2021-11-20 23:37:33,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:37:33,904 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1032 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:33,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 1530 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:33,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2021-11-20 23:37:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 516. [2021-11-20 23:37:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 500 states have (on average 1.286) internal successors, (643), 515 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 643 transitions. [2021-11-20 23:37:34,033 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 643 transitions. Word has length 79 [2021-11-20 23:37:34,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:34,033 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 643 transitions. [2021-11-20 23:37:34,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:34,034 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 643 transitions. [2021-11-20 23:37:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:37:34,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:34,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:34,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-20 23:37:34,036 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash -134038314, now seen corresponding path program 1 times [2021-11-20 23:37:34,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:34,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206222889] [2021-11-20 23:37:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:34,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:34,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:34,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206222889] [2021-11-20 23:37:34,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206222889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:34,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:34,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:34,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252108214] [2021-11-20 23:37:34,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:34,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:34,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:34,123 INFO L87 Difference]: Start difference. First operand 516 states and 643 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:35,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:35,030 INFO L93 Difference]: Finished difference Result 1022 states and 1299 transitions. [2021-11-20 23:37:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:35,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 23:37:35,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:35,032 INFO L225 Difference]: With dead ends: 1022 [2021-11-20 23:37:35,032 INFO L226 Difference]: Without dead ends: 925 [2021-11-20 23:37:35,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:35,033 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1120 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:35,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 1472 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:37:35,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-11-20 23:37:35,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 512. [2021-11-20 23:37:35,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 496 states have (on average 1.2862903225806452) internal successors, (638), 511 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 638 transitions. [2021-11-20 23:37:35,121 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 638 transitions. Word has length 80 [2021-11-20 23:37:35,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:35,121 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 638 transitions. [2021-11-20 23:37:35,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:35,121 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 638 transitions. [2021-11-20 23:37:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:37:35,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:35,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:35,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-20 23:37:35,122 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:35,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:35,123 INFO L85 PathProgramCache]: Analyzing trace with hash -222116453, now seen corresponding path program 1 times [2021-11-20 23:37:35,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:35,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747903082] [2021-11-20 23:37:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:35,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:35,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:35,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747903082] [2021-11-20 23:37:35,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747903082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:35,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:35,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:35,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693438425] [2021-11-20 23:37:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:35,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:35,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:35,209 INFO L87 Difference]: Start difference. First operand 512 states and 638 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:36,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:36,156 INFO L93 Difference]: Finished difference Result 1093 states and 1398 transitions. [2021-11-20 23:37:36,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:36,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 23:37:36,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:36,158 INFO L225 Difference]: With dead ends: 1093 [2021-11-20 23:37:36,158 INFO L226 Difference]: Without dead ends: 949 [2021-11-20 23:37:36,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:36,159 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 1493 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:36,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 1676 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:36,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-11-20 23:37:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 504. [2021-11-20 23:37:36,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.2868852459016393) internal successors, (628), 503 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 628 transitions. [2021-11-20 23:37:36,247 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 628 transitions. Word has length 80 [2021-11-20 23:37:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:36,247 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 628 transitions. [2021-11-20 23:37:36,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:36,248 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 628 transitions. [2021-11-20 23:37:36,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:37:36,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:36,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:36,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-20 23:37:36,249 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:36,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:36,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2104625012, now seen corresponding path program 1 times [2021-11-20 23:37:36,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:36,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742988281] [2021-11-20 23:37:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:36,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:36,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:36,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742988281] [2021-11-20 23:37:36,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742988281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:36,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:36,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:36,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128883247] [2021-11-20 23:37:36,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:36,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:36,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:36,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:36,339 INFO L87 Difference]: Start difference. First operand 504 states and 628 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:37,287 INFO L93 Difference]: Finished difference Result 934 states and 1179 transitions. [2021-11-20 23:37:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:37,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 23:37:37,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:37,288 INFO L225 Difference]: With dead ends: 934 [2021-11-20 23:37:37,288 INFO L226 Difference]: Without dead ends: 917 [2021-11-20 23:37:37,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:37,289 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 1462 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:37,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1462 Valid, 1660 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:37,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-11-20 23:37:37,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 496. [2021-11-20 23:37:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 480 states have (on average 1.2875) internal successors, (618), 495 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 618 transitions. [2021-11-20 23:37:37,375 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 618 transitions. Word has length 80 [2021-11-20 23:37:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:37,376 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 618 transitions. [2021-11-20 23:37:37,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:37,376 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 618 transitions. [2021-11-20 23:37:37,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:37:37,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:37,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:37,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-20 23:37:37,377 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:37,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:37,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1961223322, now seen corresponding path program 1 times [2021-11-20 23:37:37,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:37,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300553014] [2021-11-20 23:37:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:37,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:37,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:37,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:37,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300553014] [2021-11-20 23:37:37,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300553014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:37,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:37,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:37:37,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114301574] [2021-11-20 23:37:37,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:37,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:37:37,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:37,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:37:37,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:37:37,656 INFO L87 Difference]: Start difference. First operand 496 states and 618 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:38,673 INFO L93 Difference]: Finished difference Result 900 states and 1089 transitions. [2021-11-20 23:37:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:37:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-20 23:37:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:38,676 INFO L225 Difference]: With dead ends: 900 [2021-11-20 23:37:38,676 INFO L226 Difference]: Without dead ends: 703 [2021-11-20 23:37:38,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:37:38,677 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 1700 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:38,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1700 Valid, 1609 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:37:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-20 23:37:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 379. [2021-11-20 23:37:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 368 states have (on average 1.2798913043478262) internal successors, (471), 378 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 471 transitions. [2021-11-20 23:37:38,799 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 471 transitions. Word has length 81 [2021-11-20 23:37:38,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:38,800 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 471 transitions. [2021-11-20 23:37:38,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:38,800 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 471 transitions. [2021-11-20 23:37:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:37:38,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:38,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:38,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-20 23:37:38,802 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:38,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:38,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1832785083, now seen corresponding path program 1 times [2021-11-20 23:37:38,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:38,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962443750] [2021-11-20 23:37:38,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:38,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:39,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:39,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962443750] [2021-11-20 23:37:39,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962443750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:39,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:39,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:39,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569748822] [2021-11-20 23:37:39,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:39,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:37:39,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:39,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:37:39,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:37:39,111 INFO L87 Difference]: Start difference. First operand 379 states and 471 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:40,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:40,184 INFO L93 Difference]: Finished difference Result 1069 states and 1384 transitions. [2021-11-20 23:37:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:40,185 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-20 23:37:40,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:40,186 INFO L225 Difference]: With dead ends: 1069 [2021-11-20 23:37:40,187 INFO L226 Difference]: Without dead ends: 935 [2021-11-20 23:37:40,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-20 23:37:40,187 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1547 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:40,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 3019 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:37:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2021-11-20 23:37:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 325. [2021-11-20 23:37:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 317 states have (on average 1.2618296529968454) internal successors, (400), 324 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 400 transitions. [2021-11-20 23:37:40,271 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 400 transitions. Word has length 81 [2021-11-20 23:37:40,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:40,271 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 400 transitions. [2021-11-20 23:37:40,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 400 transitions. [2021-11-20 23:37:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:37:40,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:40,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:40,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-20 23:37:40,272 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:40,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1340490679, now seen corresponding path program 1 times [2021-11-20 23:37:40,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:40,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067197203] [2021-11-20 23:37:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:40,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:40,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:40,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067197203] [2021-11-20 23:37:40,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067197203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:40,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:40,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:37:40,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428029861] [2021-11-20 23:37:40,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:40,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:40,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:40,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:40,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:40,583 INFO L87 Difference]: Start difference. First operand 325 states and 400 transitions. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:42,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:42,335 INFO L93 Difference]: Finished difference Result 1555 states and 2010 transitions. [2021-11-20 23:37:42,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 23:37:42,335 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-20 23:37:42,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:42,337 INFO L225 Difference]: With dead ends: 1555 [2021-11-20 23:37:42,337 INFO L226 Difference]: Without dead ends: 1453 [2021-11-20 23:37:42,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-20 23:37:42,338 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 1403 mSDsluCounter, 3637 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 4097 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:42,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1403 Valid, 4097 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:37:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-11-20 23:37:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 303. [2021-11-20 23:37:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 297 states have (on average 1.245791245791246) internal successors, (370), 302 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 370 transitions. [2021-11-20 23:37:42,437 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 370 transitions. Word has length 81 [2021-11-20 23:37:42,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:42,438 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 370 transitions. [2021-11-20 23:37:42,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:42,438 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 370 transitions. [2021-11-20 23:37:42,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:37:42,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:42,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:42,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-20 23:37:42,439 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1064681092, now seen corresponding path program 1 times [2021-11-20 23:37:42,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:42,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899478126] [2021-11-20 23:37:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:42,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:43,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:43,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899478126] [2021-11-20 23:37:43,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899478126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:43,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:43,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-20 23:37:43,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023392483] [2021-11-20 23:37:43,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:43,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:37:43,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:37:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:43,097 INFO L87 Difference]: Start difference. First operand 303 states and 370 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:45,359 INFO L93 Difference]: Finished difference Result 744 states and 937 transitions. [2021-11-20 23:37:45,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:37:45,359 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-20 23:37:45,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:45,360 INFO L225 Difference]: With dead ends: 744 [2021-11-20 23:37:45,360 INFO L226 Difference]: Without dead ends: 605 [2021-11-20 23:37:45,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=261, Invalid=1145, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 23:37:45,361 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 843 mSDsluCounter, 4118 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 4337 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:45,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 4337 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:37:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-11-20 23:37:45,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 285. [2021-11-20 23:37:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 279 states have (on average 1.2329749103942653) internal successors, (344), 284 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 344 transitions. [2021-11-20 23:37:45,473 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 344 transitions. Word has length 81 [2021-11-20 23:37:45,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:45,473 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 344 transitions. [2021-11-20 23:37:45,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 344 transitions. [2021-11-20 23:37:45,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 23:37:45,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:45,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:45,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-20 23:37:45,474 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:45,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash 309724588, now seen corresponding path program 1 times [2021-11-20 23:37:45,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:45,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336275970] [2021-11-20 23:37:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:45,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:45,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:45,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336275970] [2021-11-20 23:37:45,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336275970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:45,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:45,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:45,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875897210] [2021-11-20 23:37:45,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:45,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:37:45,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:45,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:37:45,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:37:45,738 INFO L87 Difference]: Start difference. First operand 285 states and 344 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:46,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:46,345 INFO L93 Difference]: Finished difference Result 501 states and 627 transitions. [2021-11-20 23:37:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:37:46,346 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-20 23:37:46,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:46,347 INFO L225 Difference]: With dead ends: 501 [2021-11-20 23:37:46,347 INFO L226 Difference]: Without dead ends: 343 [2021-11-20 23:37:46,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:37:46,351 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 585 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:46,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 1290 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:37:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-20 23:37:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 207. [2021-11-20 23:37:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 205 states have (on average 1.2146341463414634) internal successors, (249), 206 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:46,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 249 transitions. [2021-11-20 23:37:46,439 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 249 transitions. Word has length 82 [2021-11-20 23:37:46,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:46,439 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 249 transitions. [2021-11-20 23:37:46,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:46,439 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 249 transitions. [2021-11-20 23:37:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 23:37:46,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:46,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:46,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-20 23:37:46,440 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash -748534451, now seen corresponding path program 1 times [2021-11-20 23:37:46,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:46,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017414098] [2021-11-20 23:37:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:46,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:46,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:46,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017414098] [2021-11-20 23:37:46,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017414098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:46,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:46,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:37:46,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316279651] [2021-11-20 23:37:46,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:46,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:37:46,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:46,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:37:46,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:46,605 INFO L87 Difference]: Start difference. First operand 207 states and 249 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:48,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:48,498 INFO L93 Difference]: Finished difference Result 1075 states and 1402 transitions. [2021-11-20 23:37:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 23:37:48,498 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-20 23:37:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:48,499 INFO L225 Difference]: With dead ends: 1075 [2021-11-20 23:37:48,499 INFO L226 Difference]: Without dead ends: 965 [2021-11-20 23:37:48,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-20 23:37:48,500 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1707 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:48,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1707 Valid, 887 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2021-11-20 23:37:48,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 215. [2021-11-20 23:37:48,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 213 states have (on average 1.2065727699530517) internal successors, (257), 214 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:48,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 257 transitions. [2021-11-20 23:37:48,595 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 257 transitions. Word has length 82 [2021-11-20 23:37:48,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:48,596 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 257 transitions. [2021-11-20 23:37:48,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:48,596 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 257 transitions. [2021-11-20 23:37:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-20 23:37:48,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:48,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:48,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-20 23:37:48,597 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:48,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:48,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1172303981, now seen corresponding path program 1 times [2021-11-20 23:37:48,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:48,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677596707] [2021-11-20 23:37:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:48,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:48,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:48,692 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:48,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677596707] [2021-11-20 23:37:48,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677596707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:48,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:48,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:48,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104622377] [2021-11-20 23:37:48,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:48,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:48,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:48,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:48,695 INFO L87 Difference]: Start difference. First operand 215 states and 257 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:49,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:49,141 INFO L93 Difference]: Finished difference Result 445 states and 555 transitions. [2021-11-20 23:37:49,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:37:49,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-20 23:37:49,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:49,142 INFO L225 Difference]: With dead ends: 445 [2021-11-20 23:37:49,142 INFO L226 Difference]: Without dead ends: 335 [2021-11-20 23:37:49,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:37:49,146 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 402 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:49,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 426 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:37:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-20 23:37:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 207. [2021-11-20 23:37:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 205 states have (on average 1.2048780487804878) internal successors, (247), 206 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 247 transitions. [2021-11-20 23:37:49,236 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 247 transitions. Word has length 83 [2021-11-20 23:37:49,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:49,236 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 247 transitions. [2021-11-20 23:37:49,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 247 transitions. [2021-11-20 23:37:49,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-20 23:37:49,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:49,237 INFO 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] [2021-11-20 23:37:49,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-20 23:37:49,237 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:49,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:49,238 INFO L85 PathProgramCache]: Analyzing trace with hash -633529937, now seen corresponding path program 1 times [2021-11-20 23:37:49,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:49,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583643611] [2021-11-20 23:37:49,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:49,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:50,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:50,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583643611] [2021-11-20 23:37:50,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583643611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:50,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:50,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-20 23:37:50,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477107514] [2021-11-20 23:37:50,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:50,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 23:37:50,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:50,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 23:37:50,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-11-20 23:37:50,279 INFO L87 Difference]: Start difference. First operand 207 states and 247 transitions. Second operand has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:52,761 INFO L93 Difference]: Finished difference Result 411 states and 511 transitions. [2021-11-20 23:37:52,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 23:37:52,761 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-20 23:37:52,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:52,762 INFO L225 Difference]: With dead ends: 411 [2021-11-20 23:37:52,762 INFO L226 Difference]: Without dead ends: 405 [2021-11-20 23:37:52,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=358, Invalid=2192, Unknown=0, NotChecked=0, Total=2550 [2021-11-20 23:37:52,764 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 737 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:52,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 2909 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:37:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-20 23:37:52,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 223. [2021-11-20 23:37:52,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 221 states have (on average 1.2081447963800904) internal successors, (267), 222 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 267 transitions. [2021-11-20 23:37:52,853 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 267 transitions. Word has length 84 [2021-11-20 23:37:52,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:52,853 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 267 transitions. [2021-11-20 23:37:52,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:52,853 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 267 transitions. [2021-11-20 23:37:52,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-20 23:37:52,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:52,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:52,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-20 23:37:52,855 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:52,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash 362850175, now seen corresponding path program 1 times [2021-11-20 23:37:52,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:52,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548563703] [2021-11-20 23:37:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:52,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:53,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:53,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548563703] [2021-11-20 23:37:53,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548563703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:53,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:53,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:37:53,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475118072] [2021-11-20 23:37:53,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:53,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:37:53,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:53,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:37:53,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:37:53,344 INFO L87 Difference]: Start difference. First operand 223 states and 267 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:55,443 INFO L93 Difference]: Finished difference Result 823 states and 1053 transitions. [2021-11-20 23:37:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 23:37:55,443 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-20 23:37:55,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:55,445 INFO L225 Difference]: With dead ends: 823 [2021-11-20 23:37:55,445 INFO L226 Difference]: Without dead ends: 817 [2021-11-20 23:37:55,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:37:55,447 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 1018 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:55,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 3370 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:55,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-11-20 23:37:55,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 223. [2021-11-20 23:37:55,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 221 states have (on average 1.2036199095022624) internal successors, (266), 222 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 266 transitions. [2021-11-20 23:37:55,577 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 266 transitions. Word has length 85 [2021-11-20 23:37:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:55,577 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 266 transitions. [2021-11-20 23:37:55,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 266 transitions. [2021-11-20 23:37:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-20 23:37:55,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:55,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:55,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-20 23:37:55,578 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:55,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1543734065, now seen corresponding path program 1 times [2021-11-20 23:37:55,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:55,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356054011] [2021-11-20 23:37:55,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:55,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:56,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:56,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356054011] [2021-11-20 23:37:56,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356054011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:56,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:56,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-20 23:37:56,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385058438] [2021-11-20 23:37:56,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:56,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 23:37:56,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:56,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 23:37:56,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:37:56,454 INFO L87 Difference]: Start difference. First operand 223 states and 266 transitions. Second operand has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:58,392 INFO L93 Difference]: Finished difference Result 421 states and 523 transitions. [2021-11-20 23:37:58,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 23:37:58,392 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-20 23:37:58,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:58,393 INFO L225 Difference]: With dead ends: 421 [2021-11-20 23:37:58,393 INFO L226 Difference]: Without dead ends: 415 [2021-11-20 23:37:58,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=225, Invalid=1107, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 23:37:58,394 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 799 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:58,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 2380 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-20 23:37:58,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 225. [2021-11-20 23:37:58,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 223 states have (on average 1.201793721973094) internal successors, (268), 224 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 268 transitions. [2021-11-20 23:37:58,496 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 268 transitions. Word has length 85 [2021-11-20 23:37:58,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:58,496 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 268 transitions. [2021-11-20 23:37:58,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:58,497 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 268 transitions. [2021-11-20 23:37:58,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-20 23:37:58,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:58,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:58,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-20 23:37:58,497 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:58,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1394343996, now seen corresponding path program 1 times [2021-11-20 23:37:58,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:58,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917405179] [2021-11-20 23:37:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:58,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:58,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:58,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917405179] [2021-11-20 23:37:58,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917405179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:59,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:59,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:37:59,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621690668] [2021-11-20 23:37:59,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:59,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:37:59,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:59,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:37:59,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:37:59,001 INFO L87 Difference]: Start difference. First operand 225 states and 268 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:00,850 INFO L93 Difference]: Finished difference Result 819 states and 1051 transitions. [2021-11-20 23:38:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 23:38:00,850 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-20 23:38:00,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:00,852 INFO L225 Difference]: With dead ends: 819 [2021-11-20 23:38:00,852 INFO L226 Difference]: Without dead ends: 813 [2021-11-20 23:38:00,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=242, Invalid=814, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 23:38:00,853 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1614 mSDsluCounter, 2371 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:00,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 2569 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:38:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-11-20 23:38:00,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 201. [2021-11-20 23:38:00,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.2) internal successors, (240), 200 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 240 transitions. [2021-11-20 23:38:00,960 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 240 transitions. Word has length 85 [2021-11-20 23:38:00,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:00,961 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 240 transitions. [2021-11-20 23:38:00,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 240 transitions. [2021-11-20 23:38:00,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-20 23:38:00,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:00,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:00,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-20 23:38:00,962 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:00,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash 504530553, now seen corresponding path program 1 times [2021-11-20 23:38:00,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:00,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806812727] [2021-11-20 23:38:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:00,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:01,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:01,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806812727] [2021-11-20 23:38:01,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806812727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:01,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:01,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:38:01,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570035416] [2021-11-20 23:38:01,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:01,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:01,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:01,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:01,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:01,009 INFO L87 Difference]: Start difference. First operand 201 states and 240 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:01,217 INFO L93 Difference]: Finished difference Result 289 states and 358 transitions. [2021-11-20 23:38:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:01,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-20 23:38:01,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:01,218 INFO L225 Difference]: With dead ends: 289 [2021-11-20 23:38:01,219 INFO L226 Difference]: Without dead ends: 248 [2021-11-20 23:38:01,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:01,219 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 63 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:01,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 286 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:38:01,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-20 23:38:01,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 238. [2021-11-20 23:38:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.219409282700422) internal successors, (289), 237 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 289 transitions. [2021-11-20 23:38:01,357 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 289 transitions. Word has length 100 [2021-11-20 23:38:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:01,357 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 289 transitions. [2021-11-20 23:38:01,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:01,358 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 289 transitions. [2021-11-20 23:38:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 23:38:01,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:01,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:01,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-20 23:38:01,359 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:01,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:01,359 INFO L85 PathProgramCache]: Analyzing trace with hash 246569264, now seen corresponding path program 1 times [2021-11-20 23:38:01,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:01,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130603231] [2021-11-20 23:38:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:01,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:01,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:01,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130603231] [2021-11-20 23:38:01,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130603231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:01,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:01,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:38:01,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517781011] [2021-11-20 23:38:01,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:01,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:01,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:01,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:01,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:01,407 INFO L87 Difference]: Start difference. First operand 238 states and 289 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:01,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:01,705 INFO L93 Difference]: Finished difference Result 468 states and 599 transitions. [2021-11-20 23:38:01,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:01,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-20 23:38:01,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:01,706 INFO L225 Difference]: With dead ends: 468 [2021-11-20 23:38:01,706 INFO L226 Difference]: Without dead ends: 353 [2021-11-20 23:38:01,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:01,710 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 56 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:01,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 286 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:38:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-11-20 23:38:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 339. [2021-11-20 23:38:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.257396449704142) internal successors, (425), 338 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 425 transitions. [2021-11-20 23:38:01,964 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 425 transitions. Word has length 103 [2021-11-20 23:38:01,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:01,964 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 425 transitions. [2021-11-20 23:38:01,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:01,964 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 425 transitions. [2021-11-20 23:38:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-20 23:38:01,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:01,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:01,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-20 23:38:01,965 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:01,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:01,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1436792568, now seen corresponding path program 1 times [2021-11-20 23:38:01,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:01,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134405003] [2021-11-20 23:38:01,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:01,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:02,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:02,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134405003] [2021-11-20 23:38:02,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134405003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:02,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:02,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:38:02,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38691998] [2021-11-20 23:38:02,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:02,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:02,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:02,015 INFO L87 Difference]: Start difference. First operand 339 states and 425 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:02,567 INFO L93 Difference]: Finished difference Result 771 states and 1007 transitions. [2021-11-20 23:38:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:02,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-20 23:38:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:02,569 INFO L225 Difference]: With dead ends: 771 [2021-11-20 23:38:02,569 INFO L226 Difference]: Without dead ends: 555 [2021-11-20 23:38:02,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:02,571 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 49 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:02,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 286 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:38:02,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-20 23:38:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 529. [2021-11-20 23:38:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.2859848484848484) internal successors, (679), 528 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 679 transitions. [2021-11-20 23:38:03,068 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 679 transitions. Word has length 106 [2021-11-20 23:38:03,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:03,069 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 679 transitions. [2021-11-20 23:38:03,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 679 transitions. [2021-11-20 23:38:03,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-20 23:38:03,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:03,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:03,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-20 23:38:03,070 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:03,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1644701149, now seen corresponding path program 1 times [2021-11-20 23:38:03,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:03,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879446873] [2021-11-20 23:38:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:03,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:03,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:03,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879446873] [2021-11-20 23:38:03,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879446873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:03,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:03,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:38:03,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104956822] [2021-11-20 23:38:03,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:03,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:03,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:03,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:03,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:03,122 INFO L87 Difference]: Start difference. First operand 529 states and 679 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:04,112 INFO L93 Difference]: Finished difference Result 1341 states and 1769 transitions. [2021-11-20 23:38:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:04,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-20 23:38:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:04,113 INFO L225 Difference]: With dead ends: 1341 [2021-11-20 23:38:04,114 INFO L226 Difference]: Without dead ends: 935 [2021-11-20 23:38:04,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:04,115 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 42 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:04,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 286 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:38:04,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2021-11-20 23:38:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 885. [2021-11-20 23:38:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 1.3020361990950227) internal successors, (1151), 884 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:04,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1151 transitions. [2021-11-20 23:38:04,988 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1151 transitions. Word has length 109 [2021-11-20 23:38:04,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:04,989 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1151 transitions. [2021-11-20 23:38:04,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1151 transitions. [2021-11-20 23:38:04,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 23:38:04,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:04,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:04,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-20 23:38:04,990 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:04,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:04,991 INFO L85 PathProgramCache]: Analyzing trace with hash -136598159, now seen corresponding path program 1 times [2021-11-20 23:38:04,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:04,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525748220] [2021-11-20 23:38:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:04,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:05,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:05,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525748220] [2021-11-20 23:38:05,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525748220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:05,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:05,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:38:05,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660457663] [2021-11-20 23:38:05,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:05,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:05,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:05,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:05,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:05,043 INFO L87 Difference]: Start difference. First operand 885 states and 1151 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:07,086 INFO L93 Difference]: Finished difference Result 2409 states and 3185 transitions. [2021-11-20 23:38:07,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:07,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-20 23:38:07,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:07,093 INFO L225 Difference]: With dead ends: 2409 [2021-11-20 23:38:07,093 INFO L226 Difference]: Without dead ends: 1647 [2021-11-20 23:38:07,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:07,094 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 32 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:07,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 286 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:38:07,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-11-20 23:38:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1549. [2021-11-20 23:38:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1548 states have (on average 1.3068475452196382) internal successors, (2023), 1548 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2023 transitions. [2021-11-20 23:38:08,750 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2023 transitions. Word has length 112 [2021-11-20 23:38:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:08,750 INFO L470 AbstractCegarLoop]: Abstraction has 1549 states and 2023 transitions. [2021-11-20 23:38:08,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2023 transitions. [2021-11-20 23:38:08,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-20 23:38:08,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:08,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:08,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-20 23:38:08,751 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:08,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1706501695, now seen corresponding path program 1 times [2021-11-20 23:38:08,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:08,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143124755] [2021-11-20 23:38:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:08,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:08,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:08,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143124755] [2021-11-20 23:38:08,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143124755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:08,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:08,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:38:08,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281533821] [2021-11-20 23:38:08,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:08,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:38:08,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:38:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:38:08,824 INFO L87 Difference]: Start difference. First operand 1549 states and 2023 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:14,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:14,744 INFO L93 Difference]: Finished difference Result 6184 states and 8172 transitions. [2021-11-20 23:38:14,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:38:14,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-20 23:38:14,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:14,755 INFO L225 Difference]: With dead ends: 6184 [2021-11-20 23:38:14,755 INFO L226 Difference]: Without dead ends: 4758 [2021-11-20 23:38:14,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:38:14,759 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 794 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:14,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1302 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:38:14,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2021-11-20 23:38:17,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 2215. [2021-11-20 23:38:17,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2214 states have (on average 1.30126467931346) internal successors, (2881), 2214 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2881 transitions. [2021-11-20 23:38:17,362 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2881 transitions. Word has length 115 [2021-11-20 23:38:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:17,362 INFO L470 AbstractCegarLoop]: Abstraction has 2215 states and 2881 transitions. [2021-11-20 23:38:17,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:17,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2881 transitions. [2021-11-20 23:38:17,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 23:38:17,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:17,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:17,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-20 23:38:17,363 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:17,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:17,364 INFO L85 PathProgramCache]: Analyzing trace with hash 295650275, now seen corresponding path program 1 times [2021-11-20 23:38:17,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:17,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277058573] [2021-11-20 23:38:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:17,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:17,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:17,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277058573] [2021-11-20 23:38:17,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277058573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:17,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:17,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:38:17,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506787176] [2021-11-20 23:38:17,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:17,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:38:17,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:17,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:38:17,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:38:17,531 INFO L87 Difference]: Start difference. First operand 2215 states and 2881 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:20,196 INFO L93 Difference]: Finished difference Result 4309 states and 5629 transitions. [2021-11-20 23:38:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:38:20,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-20 23:38:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:20,199 INFO L225 Difference]: With dead ends: 4309 [2021-11-20 23:38:20,200 INFO L226 Difference]: Without dead ends: 2217 [2021-11-20 23:38:20,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:38:20,203 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 556 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:20,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 343 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:38:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2021-11-20 23:38:22,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 2215. [2021-11-20 23:38:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2214 states have (on average 1.3003613369467029) internal successors, (2879), 2214 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2879 transitions. [2021-11-20 23:38:22,659 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2879 transitions. Word has length 117 [2021-11-20 23:38:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:22,659 INFO L470 AbstractCegarLoop]: Abstraction has 2215 states and 2879 transitions. [2021-11-20 23:38:22,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2879 transitions. [2021-11-20 23:38:22,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 23:38:22,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:22,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:22,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-20 23:38:22,661 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:22,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:22,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1755736976, now seen corresponding path program 1 times [2021-11-20 23:38:22,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:22,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109468061] [2021-11-20 23:38:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:22,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:22,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:22,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109468061] [2021-11-20 23:38:22,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109468061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:22,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:22,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:38:22,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493886474] [2021-11-20 23:38:22,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:22,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:22,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:22,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:22,718 INFO L87 Difference]: Start difference. First operand 2215 states and 2879 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:26,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:26,270 INFO L93 Difference]: Finished difference Result 4837 states and 6329 transitions. [2021-11-20 23:38:26,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:26,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-20 23:38:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:26,277 INFO L225 Difference]: With dead ends: 4837 [2021-11-20 23:38:26,278 INFO L226 Difference]: Without dead ends: 2745 [2021-11-20 23:38:26,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:26,281 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 78 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:26,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 221 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:38:26,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-11-20 23:38:29,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2743. [2021-11-20 23:38:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 2742 states have (on average 1.2943107221006565) internal successors, (3549), 2742 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 3549 transitions. [2021-11-20 23:38:29,523 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 3549 transitions. Word has length 117 [2021-11-20 23:38:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:29,523 INFO L470 AbstractCegarLoop]: Abstraction has 2743 states and 3549 transitions. [2021-11-20 23:38:29,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 3549 transitions. [2021-11-20 23:38:29,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-20 23:38:29,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:29,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:29,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-20 23:38:29,524 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:29,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:29,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1579083826, now seen corresponding path program 1 times [2021-11-20 23:38:29,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:29,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011554741] [2021-11-20 23:38:29,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:29,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:29,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:29,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011554741] [2021-11-20 23:38:29,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011554741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:29,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:29,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:38:29,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022351625] [2021-11-20 23:38:29,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:29,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:38:29,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:29,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:38:29,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:38:29,604 INFO L87 Difference]: Start difference. First operand 2743 states and 3549 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:34,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:34,397 INFO L93 Difference]: Finished difference Result 3861 states and 4916 transitions. [2021-11-20 23:38:34,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:38:34,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-20 23:38:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:34,407 INFO L225 Difference]: With dead ends: 3861 [2021-11-20 23:38:34,408 INFO L226 Difference]: Without dead ends: 3859 [2021-11-20 23:38:34,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:38:34,409 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 318 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:34,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 924 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:38:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2021-11-20 23:38:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 2743. [2021-11-20 23:38:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 2742 states have (on average 1.276805251641138) internal successors, (3501), 2742 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 3501 transitions. [2021-11-20 23:38:37,917 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 3501 transitions. Word has length 118 [2021-11-20 23:38:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:37,918 INFO L470 AbstractCegarLoop]: Abstraction has 2743 states and 3501 transitions. [2021-11-20 23:38:37,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 3501 transitions. [2021-11-20 23:38:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 23:38:37,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:37,920 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:37,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-20 23:38:37,920 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:37,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1821211791, now seen corresponding path program 1 times [2021-11-20 23:38:37,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:37,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410713070] [2021-11-20 23:38:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:37,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 23:38:38,046 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:38,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410713070] [2021-11-20 23:38:38,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410713070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:38,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:38,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:38:38,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16859027] [2021-11-20 23:38:38,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:38,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:38:38,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:38:38,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:38:38,048 INFO L87 Difference]: Start difference. First operand 2743 states and 3501 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:43,882 INFO L93 Difference]: Finished difference Result 6911 states and 8838 transitions. [2021-11-20 23:38:43,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:38:43,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-20 23:38:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:43,887 INFO L225 Difference]: With dead ends: 6911 [2021-11-20 23:38:43,887 INFO L226 Difference]: Without dead ends: 4277 [2021-11-20 23:38:43,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:38:43,891 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 499 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:43,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 387 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:38:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2021-11-20 23:38:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 2743. [2021-11-20 23:38:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 2742 states have (on average 1.276075857038658) internal successors, (3499), 2742 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 3499 transitions. [2021-11-20 23:38:47,265 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 3499 transitions. Word has length 134 [2021-11-20 23:38:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:47,266 INFO L470 AbstractCegarLoop]: Abstraction has 2743 states and 3499 transitions. [2021-11-20 23:38:47,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 3499 transitions. [2021-11-20 23:38:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-20 23:38:47,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:47,268 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:47,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-20 23:38:47,268 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1030141155, now seen corresponding path program 1 times [2021-11-20 23:38:47,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:47,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803161372] [2021-11-20 23:38:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:47,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 23:38:48,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:48,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803161372] [2021-11-20 23:38:48,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803161372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:48,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:48,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-20 23:38:48,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359463506] [2021-11-20 23:38:48,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:48,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 23:38:48,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:48,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 23:38:48,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:38:48,238 INFO L87 Difference]: Start difference. First operand 2743 states and 3499 transitions. Second operand has 26 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:56,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:56,762 INFO L93 Difference]: Finished difference Result 8025 states and 10278 transitions. [2021-11-20 23:38:56,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 23:38:56,762 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-20 23:38:56,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:56,768 INFO L225 Difference]: With dead ends: 8025 [2021-11-20 23:38:56,768 INFO L226 Difference]: Without dead ends: 5396 [2021-11-20 23:38:56,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=349, Invalid=1907, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:38:56,772 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 513 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:56,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 2449 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:38:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2021-11-20 23:39:00,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 2758. [2021-11-20 23:39:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 2757 states have (on average 1.2752992383025028) internal successors, (3516), 2757 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:00,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 3516 transitions. [2021-11-20 23:39:00,038 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 3516 transitions. Word has length 136 [2021-11-20 23:39:00,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:00,038 INFO L470 AbstractCegarLoop]: Abstraction has 2758 states and 3516 transitions. [2021-11-20 23:39:00,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:00,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 3516 transitions. [2021-11-20 23:39:00,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-20 23:39:00,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:00,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:00,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-20 23:39:00,041 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:39:00,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1952843214, now seen corresponding path program 1 times [2021-11-20 23:39:00,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:00,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857327517] [2021-11-20 23:39:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:00,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 23:39:00,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:00,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857327517] [2021-11-20 23:39:00,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857327517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:00,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:00,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:39:00,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718410023] [2021-11-20 23:39:00,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:00,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:39:00,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:00,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:39:00,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:39:00,092 INFO L87 Difference]: Start difference. First operand 2758 states and 3516 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:03,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:03,507 INFO L93 Difference]: Finished difference Result 4613 states and 5912 transitions. [2021-11-20 23:39:03,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:39:03,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-20 23:39:03,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:03,510 INFO L225 Difference]: With dead ends: 4613 [2021-11-20 23:39:03,511 INFO L226 Difference]: Without dead ends: 2758 [2021-11-20 23:39:03,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:03,513 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 170 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:03,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 166 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:39:03,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2021-11-20 23:39:06,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1965. [2021-11-20 23:39:06,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1964 states have (on average 1.255600814663951) internal successors, (2466), 1964 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2466 transitions. [2021-11-20 23:39:06,351 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2466 transitions. Word has length 137 [2021-11-20 23:39:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:06,351 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 2466 transitions. [2021-11-20 23:39:06,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2466 transitions. [2021-11-20 23:39:06,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-20 23:39:06,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:06,352 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:06,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-20 23:39:06,352 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:39:06,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:06,352 INFO L85 PathProgramCache]: Analyzing trace with hash 904958189, now seen corresponding path program 1 times [2021-11-20 23:39:06,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:06,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435395325] [2021-11-20 23:39:06,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:06,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:10,941 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:10,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435395325] [2021-11-20 23:39:10,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435395325] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:39:10,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305537904] [2021-11-20 23:39:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:10,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:39:10,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:39:10,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:39:10,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be12927e-9564-4c64-bbc9-b4d86c940b55/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:39:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:11,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-20 23:39:11,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:51,299 INFO L328 TraceCheckSpWp]: Computing backward predicates...