./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/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 38533fb2932c589b42c93c264dc8e5e297bb0dbb9a49080a666466aefcec5174 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:33:29,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:33:29,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:33:29,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:33:29,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:33:29,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:33:29,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:33:29,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:33:29,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:33:29,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:33:29,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:33:29,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:33:29,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:33:29,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:33:29,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:33:29,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:33:29,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:33:30,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:33:30,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:33:30,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:33:30,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:33:30,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:33:30,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:33:30,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:33:30,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:33:30,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:33:30,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:33:30,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:33:30,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:33:30,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:33:30,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:33:30,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:33:30,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:33:30,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:33:30,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:33:30,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:33:30,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:33:30,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:33:30,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:33:30,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:33:30,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:33:30,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:33:30,087 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:33:30,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:33:30,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:33:30,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:33:30,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:33:30,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:33:30,095 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:33:30,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:33:30,096 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:33:30,096 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:33:30,097 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:33:30,098 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:33:30,098 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:33:30,098 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:33:30,098 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:33:30,098 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:33:30,099 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:33:30,099 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:33:30,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:33:30,100 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:33:30,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:33:30,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:33:30,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:33:30,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:33:30,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:33:30,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:33:30,102 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:33:30,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:33:30,102 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:33:30,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:33:30,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:33:30,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:33:30,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:33:30,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:33:30,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:33:30,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:33:30,104 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:33:30,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:33:30,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:33:30,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:33:30,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:33:30,105 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38533fb2932c589b42c93c264dc8e5e297bb0dbb9a49080a666466aefcec5174 [2021-11-21 00:33:30,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:33:30,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:33:30,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:33:30,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:33:30,368 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:33:30,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-21 00:33:30,435 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/data/afe40e116/c563887e1b2847c9901a834c3f851dc8/FLAGe386d5703 [2021-11-21 00:33:30,990 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:33:30,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-21 00:33:31,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/data/afe40e116/c563887e1b2847c9901a834c3f851dc8/FLAGe386d5703 [2021-11-21 00:33:31,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/data/afe40e116/c563887e1b2847c9901a834c3f851dc8 [2021-11-21 00:33:31,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:33:31,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:33:31,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:33:31,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:33:31,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:33:31,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:33:31" (1/1) ... [2021-11-21 00:33:31,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@acbf8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:31, skipping insertion in model container [2021-11-21 00:33:31,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:33:31" (1/1) ... [2021-11-21 00:33:31,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:33:31,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:33:31,693 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9419,9432] [2021-11-21 00:33:31,722 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12891,12904] [2021-11-21 00:33:31,731 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14047,14060] [2021-11-21 00:33:31,737 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14703,14716] [2021-11-21 00:33:31,748 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16224,16237] [2021-11-21 00:33:31,754 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16880,16893] [2021-11-21 00:33:31,761 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17864,17877] [2021-11-21 00:33:31,785 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20202,20215] [2021-11-21 00:33:31,798 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20861,20874] [2021-11-21 00:33:31,814 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21885,21898] [2021-11-21 00:33:31,831 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23760,23773] [2021-11-21 00:33:31,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:33:32,003 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:33:32,102 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9419,9432] [2021-11-21 00:33:32,129 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12891,12904] [2021-11-21 00:33:32,148 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14047,14060] [2021-11-21 00:33:32,155 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14703,14716] [2021-11-21 00:33:32,170 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16224,16237] [2021-11-21 00:33:32,177 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16880,16893] [2021-11-21 00:33:32,188 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17864,17877] [2021-11-21 00:33:32,213 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20202,20215] [2021-11-21 00:33:32,225 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20861,20874] [2021-11-21 00:33:32,236 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21885,21898] [2021-11-21 00:33:32,266 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_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23760,23773] [2021-11-21 00:33:32,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:33:32,455 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:33:32,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32 WrapperNode [2021-11-21 00:33:32,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:33:32,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:33:32,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:33:32,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:33:32,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32" (1/1) ... [2021-11-21 00:33:32,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32" (1/1) ... [2021-11-21 00:33:32,592 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1868 [2021-11-21 00:33:32,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:33:32,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:33:32,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:33:32,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:33:32,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32" (1/1) ... [2021-11-21 00:33:32,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32" (1/1) ... [2021-11-21 00:33:32,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32" (1/1) ... [2021-11-21 00:33:32,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32" (1/1) ... [2021-11-21 00:33:32,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32" (1/1) ... [2021-11-21 00:33:32,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32" (1/1) ... [2021-11-21 00:33:32,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32" (1/1) ... [2021-11-21 00:33:32,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:33:32,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:33:32,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:33:32,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:33:32,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32" (1/1) ... [2021-11-21 00:33:32,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:33:32,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:33:32,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:33:32,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:33:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:33:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:33:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:33:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:33:33,018 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:33:33,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:33:34,177 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:33:34,314 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:33:34,314 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:33:34,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:33:34 BoogieIcfgContainer [2021-11-21 00:33:34,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:33:34,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:33:34,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:33:34,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:33:34,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:33:31" (1/3) ... [2021-11-21 00:33:34,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d39c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:33:34, skipping insertion in model container [2021-11-21 00:33:34,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:32" (2/3) ... [2021-11-21 00:33:34,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d39c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:33:34, skipping insertion in model container [2021-11-21 00:33:34,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:33:34" (3/3) ... [2021-11-21 00:33:34,326 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-21 00:33:34,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:33:34,332 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-21 00:33:34,380 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:33:34,387 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 [2021-11-21 00:33:34,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-21 00:33:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 339 states, 327 states have (on average 1.8440366972477065) internal successors, (603), 338 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-21 00:33:34,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:34,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:34,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:34,480 INFO L85 PathProgramCache]: Analyzing trace with hash -972469851, now seen corresponding path program 1 times [2021-11-21 00:33:34,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:34,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911806855] [2021-11-21 00:33:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:34,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:34,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:34,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911806855] [2021-11-21 00:33:34,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911806855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:34,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:34,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:33:34,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620874364] [2021-11-21 00:33:34,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:34,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:33:34,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:34,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:33:34,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:34,872 INFO L87 Difference]: Start difference. First operand has 339 states, 327 states have (on average 1.8440366972477065) internal successors, (603), 338 states have internal predecessors, (603), 0 states have call successors, (0), 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 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:35,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:35,196 INFO L93 Difference]: Finished difference Result 531 states and 907 transitions. [2021-11-21 00:33:35,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:33:35,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-21 00:33:35,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:35,212 INFO L225 Difference]: With dead ends: 531 [2021-11-21 00:33:35,212 INFO L226 Difference]: Without dead ends: 285 [2021-11-21 00:33:35,216 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 [2021-11-21 00:33:35,220 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 1359 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:35,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1359 Valid, 358 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:33:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-21 00:33:35,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-11-21 00:33:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 274 states have (on average 1.2554744525547445) 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) [2021-11-21 00:33:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 344 transitions. [2021-11-21 00:33:35,284 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 344 transitions. Word has length 58 [2021-11-21 00:33:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:35,285 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 344 transitions. [2021-11-21 00:33:35,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 344 transitions. [2021-11-21 00:33:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-21 00:33:35,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:35,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:35,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:33:35,291 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:35,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2110592992, now seen corresponding path program 1 times [2021-11-21 00:33:35,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:35,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775866266] [2021-11-21 00:33:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:35,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:35,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:35,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775866266] [2021-11-21 00:33:35,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775866266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:35,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:35,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:33:35,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655361106] [2021-11-21 00:33:35,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:35,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:33:35,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:33:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:35,416 INFO L87 Difference]: Start difference. First operand 285 states and 344 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:35,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:35,629 INFO L93 Difference]: Finished difference Result 471 states and 582 transitions. [2021-11-21 00:33:35,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:33:35,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-21 00:33:35,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:35,641 INFO L225 Difference]: With dead ends: 471 [2021-11-21 00:33:35,642 INFO L226 Difference]: Without dead ends: 250 [2021-11-21 00:33:35,646 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 [2021-11-21 00:33:35,648 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 873 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:35,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 183 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:33:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-21 00:33:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-11-21 00:33:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 239 states have (on average 1.2719665271966527) internal successors, (304), 249 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 304 transitions. [2021-11-21 00:33:35,693 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 304 transitions. Word has length 59 [2021-11-21 00:33:35,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:35,693 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 304 transitions. [2021-11-21 00:33:35,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:35,694 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 304 transitions. [2021-11-21 00:33:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-21 00:33:35,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:35,704 INFO 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] [2021-11-21 00:33:35,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:33:35,704 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:35,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:35,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2026571766, now seen corresponding path program 1 times [2021-11-21 00:33:35,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:35,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163646581] [2021-11-21 00:33:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:35,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:35,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:35,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163646581] [2021-11-21 00:33:35,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163646581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:35,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:35,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:33:35,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453633058] [2021-11-21 00:33:35,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:35,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:33:35,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:33:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:35,859 INFO L87 Difference]: Start difference. First operand 250 states and 304 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:36,104 INFO L93 Difference]: Finished difference Result 436 states and 541 transitions. [2021-11-21 00:33:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:33:36,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-21 00:33:36,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:36,107 INFO L225 Difference]: With dead ends: 436 [2021-11-21 00:33:36,107 INFO L226 Difference]: Without dead ends: 240 [2021-11-21 00:33:36,108 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 [2021-11-21 00:33:36,111 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 781 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:36,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 176 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:33:36,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-21 00:33:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-21 00:33:36,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 229 states have (on average 1.2707423580786026) internal successors, (291), 239 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 291 transitions. [2021-11-21 00:33:36,148 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 291 transitions. Word has length 60 [2021-11-21 00:33:36,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:36,150 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 291 transitions. [2021-11-21 00:33:36,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 291 transitions. [2021-11-21 00:33:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-21 00:33:36,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:36,152 INFO 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] [2021-11-21 00:33:36,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:33:36,153 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:36,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:36,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2081966607, now seen corresponding path program 1 times [2021-11-21 00:33:36,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:36,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780470291] [2021-11-21 00:33:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:36,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:36,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:36,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780470291] [2021-11-21 00:33:36,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780470291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:36,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:36,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:33:36,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142181260] [2021-11-21 00:33:36,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:36,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:33:36,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:36,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:33:36,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:36,314 INFO L87 Difference]: Start difference. First operand 240 states and 291 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:36,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:36,500 INFO L93 Difference]: Finished difference Result 426 states and 527 transitions. [2021-11-21 00:33:36,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:33:36,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-21 00:33:36,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:36,504 INFO L225 Difference]: With dead ends: 426 [2021-11-21 00:33:36,504 INFO L226 Difference]: Without dead ends: 229 [2021-11-21 00:33:36,505 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 [2021-11-21 00:33:36,507 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 781 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:36,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 171 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:33:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-21 00:33:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2021-11-21 00:33:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.275229357798165) internal successors, (278), 228 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 278 transitions. [2021-11-21 00:33:36,518 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 278 transitions. Word has length 61 [2021-11-21 00:33:36,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:36,519 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 278 transitions. [2021-11-21 00:33:36,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 278 transitions. [2021-11-21 00:33:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:33:36,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:36,520 INFO 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] [2021-11-21 00:33:36,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:33:36,520 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:36,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:36,521 INFO L85 PathProgramCache]: Analyzing trace with hash -617130845, now seen corresponding path program 1 times [2021-11-21 00:33:36,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:36,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114005778] [2021-11-21 00:33:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:36,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:36,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:36,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114005778] [2021-11-21 00:33:36,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114005778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:36,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:36,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:33:36,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938059940] [2021-11-21 00:33:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:36,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:33:36,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:36,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:33:36,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:33:36,824 INFO L87 Difference]: Start difference. First operand 229 states and 278 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:37,710 INFO L93 Difference]: Finished difference Result 476 states and 580 transitions. [2021-11-21 00:33:37,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-21 00:33:37,711 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-21 00:33:37,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:37,713 INFO L225 Difference]: With dead ends: 476 [2021-11-21 00:33:37,714 INFO L226 Difference]: Without dead ends: 434 [2021-11-21 00:33:37,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-21 00:33:37,715 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 1499 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:37,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 940 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:33:37,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-21 00:33:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 236. [2021-11-21 00:33:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 225 states have (on average 1.28) internal successors, (288), 235 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 288 transitions. [2021-11-21 00:33:37,737 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 288 transitions. Word has length 62 [2021-11-21 00:33:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:37,737 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 288 transitions. [2021-11-21 00:33:37,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 288 transitions. [2021-11-21 00:33:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:33:37,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:37,739 INFO 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] [2021-11-21 00:33:37,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:33:37,739 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:37,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:37,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1295066257, now seen corresponding path program 1 times [2021-11-21 00:33:37,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:37,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533564073] [2021-11-21 00:33:37,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:37,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:37,859 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:37,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533564073] [2021-11-21 00:33:37,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533564073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:37,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:37,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:33:37,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822487236] [2021-11-21 00:33:37,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:37,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:33:37,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:33:37,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:33:37,861 INFO L87 Difference]: Start difference. First operand 236 states and 288 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:38,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:38,565 INFO L93 Difference]: Finished difference Result 495 states and 611 transitions. [2021-11-21 00:33:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 00:33:38,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-21 00:33:38,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:38,568 INFO L225 Difference]: With dead ends: 495 [2021-11-21 00:33:38,568 INFO L226 Difference]: Without dead ends: 424 [2021-11-21 00:33:38,568 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 [2021-11-21 00:33:38,569 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1238 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:38,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 769 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:33:38,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-21 00:33:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 229. [2021-11-21 00:33:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.2706422018348624) internal successors, (277), 228 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 277 transitions. [2021-11-21 00:33:38,589 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 277 transitions. Word has length 62 [2021-11-21 00:33:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:38,589 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 277 transitions. [2021-11-21 00:33:38,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 277 transitions. [2021-11-21 00:33:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:33:38,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:38,590 INFO 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] [2021-11-21 00:33:38,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:33:38,591 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1025976073, now seen corresponding path program 1 times [2021-11-21 00:33:38,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:38,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386044970] [2021-11-21 00:33:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:38,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:38,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:38,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386044970] [2021-11-21 00:33:38,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386044970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:38,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:38,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:33:38,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201141022] [2021-11-21 00:33:38,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:38,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:33:38,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:33:38,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:33:38,709 INFO L87 Difference]: Start difference. First operand 229 states and 277 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:39,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:39,373 INFO L93 Difference]: Finished difference Result 469 states and 578 transitions. [2021-11-21 00:33:39,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 00:33:39,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-21 00:33:39,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:39,377 INFO L225 Difference]: With dead ends: 469 [2021-11-21 00:33:39,377 INFO L226 Difference]: Without dead ends: 420 [2021-11-21 00:33:39,378 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 [2021-11-21 00:33:39,378 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 697 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:39,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 1124 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:33:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-21 00:33:39,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 229. [2021-11-21 00:33:39,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.2660550458715596) internal successors, (276), 228 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:39,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 276 transitions. [2021-11-21 00:33:39,404 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 276 transitions. Word has length 62 [2021-11-21 00:33:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:39,406 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 276 transitions. [2021-11-21 00:33:39,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:39,406 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 276 transitions. [2021-11-21 00:33:39,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:33:39,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:39,407 INFO 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] [2021-11-21 00:33:39,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:33:39,408 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:39,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:39,411 INFO L85 PathProgramCache]: Analyzing trace with hash 762232665, now seen corresponding path program 1 times [2021-11-21 00:33:39,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:39,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861638631] [2021-11-21 00:33:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:39,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:39,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:39,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861638631] [2021-11-21 00:33:39,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861638631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:39,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:39,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:33:39,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070744409] [2021-11-21 00:33:39,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:39,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:33:39,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:39,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:33:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:33:39,543 INFO L87 Difference]: Start difference. First operand 229 states and 276 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:39,909 INFO L93 Difference]: Finished difference Result 434 states and 514 transitions. [2021-11-21 00:33:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:33:39,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-21 00:33:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:39,912 INFO L225 Difference]: With dead ends: 434 [2021-11-21 00:33:39,912 INFO L226 Difference]: Without dead ends: 318 [2021-11-21 00:33:39,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:33:39,913 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 1227 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:39,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 386 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:33:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-21 00:33:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 229. [2021-11-21 00:33:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.261467889908257) internal successors, (275), 228 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 275 transitions. [2021-11-21 00:33:39,937 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 275 transitions. Word has length 62 [2021-11-21 00:33:39,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:39,938 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 275 transitions. [2021-11-21 00:33:39,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:39,938 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 275 transitions. [2021-11-21 00:33:39,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:33:39,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:39,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:39,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:33:39,940 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:39,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:39,940 INFO L85 PathProgramCache]: Analyzing trace with hash 350648810, now seen corresponding path program 1 times [2021-11-21 00:33:39,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:39,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635417401] [2021-11-21 00:33:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:39,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:40,056 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:40,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635417401] [2021-11-21 00:33:40,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635417401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:40,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:40,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:33:40,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284666963] [2021-11-21 00:33:40,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:40,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:33:40,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:40,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:33:40,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:33:40,058 INFO L87 Difference]: Start difference. First operand 229 states and 275 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:40,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:40,749 INFO L93 Difference]: Finished difference Result 454 states and 551 transitions. [2021-11-21 00:33:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 00:33:40,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-21 00:33:40,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:40,753 INFO L225 Difference]: With dead ends: 454 [2021-11-21 00:33:40,753 INFO L226 Difference]: Without dead ends: 412 [2021-11-21 00:33:40,754 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 [2021-11-21 00:33:40,756 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 905 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:40,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 1031 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:33:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-21 00:33:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 229. [2021-11-21 00:33:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.2568807339449541) internal successors, (274), 228 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 274 transitions. [2021-11-21 00:33:40,785 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 274 transitions. Word has length 64 [2021-11-21 00:33:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:40,786 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 274 transitions. [2021-11-21 00:33:40,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 274 transitions. [2021-11-21 00:33:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:33:40,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:40,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:40,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:33:40,791 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:40,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:40,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2032121384, now seen corresponding path program 1 times [2021-11-21 00:33:40,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:40,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264268462] [2021-11-21 00:33:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:40,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:41,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:41,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264268462] [2021-11-21 00:33:41,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264268462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:41,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:41,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:33:41,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002264131] [2021-11-21 00:33:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:41,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:33:41,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:33:41,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:33:41,027 INFO L87 Difference]: Start difference. First operand 229 states and 274 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:42,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:42,733 INFO L93 Difference]: Finished difference Result 709 states and 885 transitions. [2021-11-21 00:33:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 00:33:42,734 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-21 00:33:42,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:42,738 INFO L225 Difference]: With dead ends: 709 [2021-11-21 00:33:42,738 INFO L226 Difference]: Without dead ends: 655 [2021-11-21 00:33:42,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-21 00:33:42,740 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 2177 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:42,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2177 Valid, 1311 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 00:33:42,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-11-21 00:33:42,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 233. [2021-11-21 00:33:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 222 states have (on average 1.2522522522522523) internal successors, (278), 232 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 278 transitions. [2021-11-21 00:33:42,773 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 278 transitions. Word has length 64 [2021-11-21 00:33:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:42,773 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 278 transitions. [2021-11-21 00:33:42,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 278 transitions. [2021-11-21 00:33:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:33:42,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:42,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:42,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:33:42,775 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:42,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:42,776 INFO L85 PathProgramCache]: Analyzing trace with hash 861544116, now seen corresponding path program 1 times [2021-11-21 00:33:42,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:42,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926069956] [2021-11-21 00:33:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:42,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:42,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:42,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:42,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926069956] [2021-11-21 00:33:42,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926069956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:42,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:42,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:33:42,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168227442] [2021-11-21 00:33:42,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:42,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:33:42,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:42,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:33:42,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:33:42,919 INFO L87 Difference]: Start difference. First operand 233 states and 278 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:43,533 INFO L93 Difference]: Finished difference Result 455 states and 551 transitions. [2021-11-21 00:33:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 00:33:43,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-21 00:33:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:43,539 INFO L225 Difference]: With dead ends: 455 [2021-11-21 00:33:43,539 INFO L226 Difference]: Without dead ends: 416 [2021-11-21 00:33:43,540 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 [2021-11-21 00:33:43,540 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 1103 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:43,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 780 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:33:43,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-11-21 00:33:43,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 233. [2021-11-21 00:33:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 222 states have (on average 1.2477477477477477) internal successors, (277), 232 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 277 transitions. [2021-11-21 00:33:43,591 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 277 transitions. Word has length 64 [2021-11-21 00:33:43,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:43,592 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 277 transitions. [2021-11-21 00:33:43,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:43,592 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 277 transitions. [2021-11-21 00:33:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:33:43,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:43,593 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] [2021-11-21 00:33:43,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:33:43,594 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:43,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:43,595 INFO L85 PathProgramCache]: Analyzing trace with hash -404487765, now seen corresponding path program 1 times [2021-11-21 00:33:43,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:43,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25114838] [2021-11-21 00:33:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:43,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:43,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:43,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25114838] [2021-11-21 00:33:43,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25114838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:43,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:43,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:33:43,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223016094] [2021-11-21 00:33:43,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:43,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:33:43,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:43,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:33:43,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:33:43,765 INFO L87 Difference]: Start difference. First operand 233 states and 277 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:45,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:45,279 INFO L93 Difference]: Finished difference Result 620 states and 763 transitions. [2021-11-21 00:33:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 00:33:45,280 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-21 00:33:45,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:45,284 INFO L225 Difference]: With dead ends: 620 [2021-11-21 00:33:45,284 INFO L226 Difference]: Without dead ends: 615 [2021-11-21 00:33:45,285 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 [2021-11-21 00:33:45,285 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 2070 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:45,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2070 Valid, 1104 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 00:33:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-21 00:33:45,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 237. [2021-11-21 00:33:45,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 226 states have (on average 1.2433628318584071) internal successors, (281), 236 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 281 transitions. [2021-11-21 00:33:45,322 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 281 transitions. Word has length 64 [2021-11-21 00:33:45,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:45,322 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 281 transitions. [2021-11-21 00:33:45,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:45,322 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 281 transitions. [2021-11-21 00:33:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:33:45,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:45,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:45,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:33:45,324 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:45,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:45,324 INFO L85 PathProgramCache]: Analyzing trace with hash 334726124, now seen corresponding path program 1 times [2021-11-21 00:33:45,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:45,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412203596] [2021-11-21 00:33:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:45,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:45,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:45,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412203596] [2021-11-21 00:33:45,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412203596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:45,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:45,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 00:33:45,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056439354] [2021-11-21 00:33:45,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:45,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:33:45,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:45,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:33:45,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:33:45,499 INFO L87 Difference]: Start difference. First operand 237 states and 281 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:46,724 INFO L93 Difference]: Finished difference Result 547 states and 670 transitions. [2021-11-21 00:33:46,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 00:33:46,725 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-21 00:33:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:46,728 INFO L225 Difference]: With dead ends: 547 [2021-11-21 00:33:46,728 INFO L226 Difference]: Without dead ends: 470 [2021-11-21 00:33:46,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:33:46,729 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 1132 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:46,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 1549 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 00:33:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-21 00:33:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 237. [2021-11-21 00:33:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 226 states have (on average 1.238938053097345) internal successors, (280), 236 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 280 transitions. [2021-11-21 00:33:46,768 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 280 transitions. Word has length 64 [2021-11-21 00:33:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:46,768 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 280 transitions. [2021-11-21 00:33:46,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:46,768 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 280 transitions. [2021-11-21 00:33:46,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:33:46,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:46,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:46,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:33:46,770 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:46,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:46,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1265909968, now seen corresponding path program 1 times [2021-11-21 00:33:46,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:46,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10598935] [2021-11-21 00:33:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:46,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:46,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:46,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10598935] [2021-11-21 00:33:46,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10598935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:46,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:46,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:33:46,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568581471] [2021-11-21 00:33:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:46,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:33:46,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:46,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:33:46,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:33:46,876 INFO L87 Difference]: Start difference. First operand 237 states and 280 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:47,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:47,544 INFO L93 Difference]: Finished difference Result 421 states and 502 transitions. [2021-11-21 00:33:47,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 00:33:47,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-21 00:33:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:47,547 INFO L225 Difference]: With dead ends: 421 [2021-11-21 00:33:47,548 INFO L226 Difference]: Without dead ends: 416 [2021-11-21 00:33:47,548 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 [2021-11-21 00:33:47,549 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1088 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:47,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 805 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:33:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-11-21 00:33:47,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 237. [2021-11-21 00:33:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 226 states have (on average 1.2345132743362832) internal successors, (279), 236 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 279 transitions. [2021-11-21 00:33:47,597 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 279 transitions. Word has length 64 [2021-11-21 00:33:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:47,597 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 279 transitions. [2021-11-21 00:33:47,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 279 transitions. [2021-11-21 00:33:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:33:47,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:47,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:47,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 00:33:47,599 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:47,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:47,600 INFO L85 PathProgramCache]: Analyzing trace with hash 646287134, now seen corresponding path program 1 times [2021-11-21 00:33:47,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:47,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016228395] [2021-11-21 00:33:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:47,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:47,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:47,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016228395] [2021-11-21 00:33:47,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016228395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:47,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:47,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:33:47,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585140512] [2021-11-21 00:33:47,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:47,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:33:47,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:33:47,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:33:47,728 INFO L87 Difference]: Start difference. First operand 237 states and 279 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:48,406 INFO L93 Difference]: Finished difference Result 441 states and 530 transitions. [2021-11-21 00:33:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 00:33:48,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-21 00:33:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:48,409 INFO L225 Difference]: With dead ends: 441 [2021-11-21 00:33:48,409 INFO L226 Difference]: Without dead ends: 424 [2021-11-21 00:33:48,410 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 [2021-11-21 00:33:48,410 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 652 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:48,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 1263 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:33:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-21 00:33:48,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 237. [2021-11-21 00:33:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 226 states have (on average 1.2300884955752212) internal successors, (278), 236 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 278 transitions. [2021-11-21 00:33:48,448 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 278 transitions. Word has length 64 [2021-11-21 00:33:48,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:48,449 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 278 transitions. [2021-11-21 00:33:48,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:48,449 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 278 transitions. [2021-11-21 00:33:48,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 00:33:48,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:48,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:48,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 00:33:48,450 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:48,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:48,451 INFO L85 PathProgramCache]: Analyzing trace with hash 79613180, now seen corresponding path program 1 times [2021-11-21 00:33:48,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:48,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430064263] [2021-11-21 00:33:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:48,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:48,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:48,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430064263] [2021-11-21 00:33:48,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430064263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:48,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:48,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:33:48,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628490152] [2021-11-21 00:33:48,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:48,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:33:48,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:48,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:33:48,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:33:48,574 INFO L87 Difference]: Start difference. First operand 237 states and 278 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:49,292 INFO L93 Difference]: Finished difference Result 421 states and 500 transitions. [2021-11-21 00:33:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 00:33:49,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-21 00:33:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:49,295 INFO L225 Difference]: With dead ends: 421 [2021-11-21 00:33:49,295 INFO L226 Difference]: Without dead ends: 416 [2021-11-21 00:33:49,296 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 [2021-11-21 00:33:49,297 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 614 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:49,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 1088 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:33:49,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-11-21 00:33:49,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 233. [2021-11-21 00:33:49,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 222 states have (on average 1.2297297297297298) internal successors, (273), 232 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 273 transitions. [2021-11-21 00:33:49,338 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 273 transitions. Word has length 65 [2021-11-21 00:33:49,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:49,338 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 273 transitions. [2021-11-21 00:33:49,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 273 transitions. [2021-11-21 00:33:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 00:33:49,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:49,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:49,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:33:49,342 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:49,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:49,343 INFO L85 PathProgramCache]: Analyzing trace with hash -819884853, now seen corresponding path program 1 times [2021-11-21 00:33:49,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:49,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476470414] [2021-11-21 00:33:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:49,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:49,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:49,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476470414] [2021-11-21 00:33:49,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476470414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:49,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:49,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:33:49,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346269113] [2021-11-21 00:33:49,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:49,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:33:49,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:49,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:33:49,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:33:49,456 INFO L87 Difference]: Start difference. First operand 233 states and 273 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:50,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:50,171 INFO L93 Difference]: Finished difference Result 474 states and 573 transitions. [2021-11-21 00:33:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 00:33:50,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-21 00:33:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:50,174 INFO L225 Difference]: With dead ends: 474 [2021-11-21 00:33:50,174 INFO L226 Difference]: Without dead ends: 420 [2021-11-21 00:33:50,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-21 00:33:50,175 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 708 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:50,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 995 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:33:50,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-21 00:33:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 229. [2021-11-21 00:33:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.2293577981651376) internal successors, (268), 228 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) [2021-11-21 00:33:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 268 transitions. [2021-11-21 00:33:50,216 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 268 transitions. Word has length 65 [2021-11-21 00:33:50,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:50,216 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 268 transitions. [2021-11-21 00:33:50,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:50,217 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 268 transitions. [2021-11-21 00:33:50,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 00:33:50,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:50,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:50,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 00:33:50,218 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:50,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:50,218 INFO L85 PathProgramCache]: Analyzing trace with hash 107558087, now seen corresponding path program 1 times [2021-11-21 00:33:50,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:50,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742724642] [2021-11-21 00:33:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:50,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:50,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:50,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742724642] [2021-11-21 00:33:50,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742724642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:50,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:50,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:33:50,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026499116] [2021-11-21 00:33:50,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:50,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:33:50,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:50,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:33:50,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:33:50,580 INFO L87 Difference]: Start difference. First operand 229 states and 268 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:51,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:51,750 INFO L93 Difference]: Finished difference Result 536 states and 615 transitions. [2021-11-21 00:33:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-21 00:33:51,751 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-21 00:33:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:51,754 INFO L225 Difference]: With dead ends: 536 [2021-11-21 00:33:51,755 INFO L226 Difference]: Without dead ends: 495 [2021-11-21 00:33:51,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-21 00:33:51,758 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 1647 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:51,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 1677 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:33:51,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-21 00:33:51,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 225. [2021-11-21 00:33:51,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 215 states have (on average 1.2232558139534884) internal successors, (263), 224 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 263 transitions. [2021-11-21 00:33:51,806 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 263 transitions. Word has length 66 [2021-11-21 00:33:51,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:51,807 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 263 transitions. [2021-11-21 00:33:51,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:51,807 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 263 transitions. [2021-11-21 00:33:51,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 00:33:51,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:51,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:51,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 00:33:51,809 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:51,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:51,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1672959061, now seen corresponding path program 1 times [2021-11-21 00:33:51,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:51,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124570205] [2021-11-21 00:33:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:51,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:52,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:52,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124570205] [2021-11-21 00:33:52,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124570205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:52,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:52,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 00:33:52,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156477617] [2021-11-21 00:33:52,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:52,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:33:52,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:52,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:33:52,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:33:52,100 INFO L87 Difference]: Start difference. First operand 225 states and 263 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:52,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:52,961 INFO L93 Difference]: Finished difference Result 511 states and 600 transitions. [2021-11-21 00:33:52,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:33:52,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-21 00:33:52,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:52,964 INFO L225 Difference]: With dead ends: 511 [2021-11-21 00:33:52,964 INFO L226 Difference]: Without dead ends: 415 [2021-11-21 00:33:52,965 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 [2021-11-21 00:33:52,965 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 1096 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:52,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 1088 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:33:52,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-21 00:33:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 166. [2021-11-21 00:33:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 159 states have (on average 1.20125786163522) internal successors, (191), 165 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 191 transitions. [2021-11-21 00:33:53,018 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 191 transitions. Word has length 66 [2021-11-21 00:33:53,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:53,019 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 191 transitions. [2021-11-21 00:33:53,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:53,019 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 191 transitions. [2021-11-21 00:33:53,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 00:33:53,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:53,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:53,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 00:33:53,021 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:53,021 INFO L85 PathProgramCache]: Analyzing trace with hash 89242274, now seen corresponding path program 1 times [2021-11-21 00:33:53,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:53,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553433512] [2021-11-21 00:33:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:53,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:53,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:53,967 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:53,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553433512] [2021-11-21 00:33:53,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553433512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:53,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:53,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-21 00:33:53,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981000051] [2021-11-21 00:33:53,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:53,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-21 00:33:53,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:53,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-21 00:33:53,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-21 00:33:53,969 INFO L87 Difference]: Start difference. First operand 166 states and 191 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:56,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:56,343 INFO L93 Difference]: Finished difference Result 531 states and 624 transitions. [2021-11-21 00:33:56,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-21 00:33:56,344 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-21 00:33:56,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:56,347 INFO L225 Difference]: With dead ends: 531 [2021-11-21 00:33:56,347 INFO L226 Difference]: Without dead ends: 490 [2021-11-21 00:33:56,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=290, Invalid=1516, Unknown=0, NotChecked=0, Total=1806 [2021-11-21 00:33:56,349 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1592 mSDsluCounter, 4246 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 4545 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:56,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1592 Valid, 4545 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:33:56,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-21 00:33:56,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 181. [2021-11-21 00:33:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 174 states have (on average 1.2183908045977012) internal successors, (212), 180 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 212 transitions. [2021-11-21 00:33:56,390 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 212 transitions. Word has length 66 [2021-11-21 00:33:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:56,390 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 212 transitions. [2021-11-21 00:33:56,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:56,391 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 212 transitions. [2021-11-21 00:33:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 00:33:56,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:56,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:56,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 00:33:56,392 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:56,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1372728877, now seen corresponding path program 1 times [2021-11-21 00:33:56,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:56,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486717757] [2021-11-21 00:33:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:56,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:56,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:56,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486717757] [2021-11-21 00:33:56,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486717757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:56,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:56,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:33:56,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282792775] [2021-11-21 00:33:56,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:56,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:33:56,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:33:56,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:33:56,735 INFO L87 Difference]: Start difference. First operand 181 states and 212 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:57,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:57,876 INFO L93 Difference]: Finished difference Result 513 states and 626 transitions. [2021-11-21 00:33:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 00:33:57,877 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-21 00:33:57,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:57,880 INFO L225 Difference]: With dead ends: 513 [2021-11-21 00:33:57,880 INFO L226 Difference]: Without dead ends: 443 [2021-11-21 00:33:57,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:33:57,882 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 788 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:57,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 3052 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:33:57,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-21 00:33:57,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 148. [2021-11-21 00:33:57,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 144 states have (on average 1.2083333333333333) internal successors, (174), 147 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2021-11-21 00:33:57,932 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 66 [2021-11-21 00:33:57,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:57,933 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2021-11-21 00:33:57,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2021-11-21 00:33:57,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 00:33:57,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:57,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:57,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-21 00:33:57,935 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:57,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:57,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1736033602, now seen corresponding path program 1 times [2021-11-21 00:33:57,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:57,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204497873] [2021-11-21 00:33:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:57,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:58,221 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:58,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204497873] [2021-11-21 00:33:58,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204497873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:58,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:58,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 00:33:58,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896543355] [2021-11-21 00:33:58,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:58,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:33:58,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:58,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:33:58,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:33:58,224 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:58,702 INFO L93 Difference]: Finished difference Result 249 states and 298 transitions. [2021-11-21 00:33:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:33:58,703 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-21 00:33:58,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:58,705 INFO L225 Difference]: With dead ends: 249 [2021-11-21 00:33:58,705 INFO L226 Difference]: Without dead ends: 208 [2021-11-21 00:33:58,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:33:58,707 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 439 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:58,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 857 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:33:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-21 00:33:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 129. [2021-11-21 00:33:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 126 states have (on average 1.1746031746031746) internal successors, (148), 128 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2021-11-21 00:33:58,754 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 67 [2021-11-21 00:33:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:58,754 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2021-11-21 00:33:58,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2021-11-21 00:33:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 00:33:58,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:58,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:58,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-21 00:33:58,756 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:58,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash -812946096, now seen corresponding path program 1 times [2021-11-21 00:33:58,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:58,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354020591] [2021-11-21 00:33:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:58,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:58,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:58,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354020591] [2021-11-21 00:33:58,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354020591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:58,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:58,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:33:58,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012953907] [2021-11-21 00:33:58,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:58,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:33:58,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:33:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:33:58,859 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:59,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:59,139 INFO L93 Difference]: Finished difference Result 194 states and 225 transitions. [2021-11-21 00:33:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:33:59,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-21 00:33:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:59,141 INFO L225 Difference]: With dead ends: 194 [2021-11-21 00:33:59,141 INFO L226 Difference]: Without dead ends: 187 [2021-11-21 00:33:59,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:33:59,142 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 436 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:59,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 486 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:33:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-21 00:33:59,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 129. [2021-11-21 00:33:59,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 126 states have (on average 1.1666666666666667) internal successors, (147), 128 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 147 transitions. [2021-11-21 00:33:59,177 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 147 transitions. Word has length 67 [2021-11-21 00:33:59,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:59,178 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 147 transitions. [2021-11-21 00:33:59,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 147 transitions. [2021-11-21 00:33:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 00:33:59,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:59,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:59,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-21 00:33:59,180 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:59,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1116116258, now seen corresponding path program 1 times [2021-11-21 00:33:59,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:59,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139920553] [2021-11-21 00:33:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:59,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:59,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:59,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139920553] [2021-11-21 00:33:59,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139920553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:59,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:59,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:33:59,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428720737] [2021-11-21 00:33:59,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:59,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:33:59,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:59,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:33:59,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:33:59,279 INFO L87 Difference]: Start difference. First operand 129 states and 147 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:59,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:59,606 INFO L93 Difference]: Finished difference Result 260 states and 307 transitions. [2021-11-21 00:33:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 00:33:59,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-21 00:33:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:59,608 INFO L225 Difference]: With dead ends: 260 [2021-11-21 00:33:59,608 INFO L226 Difference]: Without dead ends: 205 [2021-11-21 00:33:59,608 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 [2021-11-21 00:33:59,609 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 516 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:59,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 447 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:33:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-21 00:33:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 129. [2021-11-21 00:33:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 126 states have (on average 1.1587301587301588) internal successors, (146), 128 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:59,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 146 transitions. [2021-11-21 00:33:59,645 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 146 transitions. Word has length 67 [2021-11-21 00:33:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:59,645 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 146 transitions. [2021-11-21 00:33:59,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 146 transitions. [2021-11-21 00:33:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-21 00:33:59,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:59,647 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] [2021-11-21 00:33:59,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-21 00:33:59,647 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:33:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:59,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1523699975, now seen corresponding path program 1 times [2021-11-21 00:33:59,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:59,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543758407] [2021-11-21 00:33:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:59,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:59,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:59,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543758407] [2021-11-21 00:33:59,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543758407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:59,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:59,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:33:59,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669115907] [2021-11-21 00:33:59,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:59,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:33:59,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:59,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:33:59,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:33:59,972 INFO L87 Difference]: Start difference. First operand 129 states and 146 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:01,039 INFO L93 Difference]: Finished difference Result 435 states and 531 transitions. [2021-11-21 00:34:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 00:34:01,040 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-21 00:34:01,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:01,042 INFO L225 Difference]: With dead ends: 435 [2021-11-21 00:34:01,042 INFO L226 Difference]: Without dead ends: 429 [2021-11-21 00:34:01,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:34:01,043 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 843 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:01,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 1974 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:34:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-21 00:34:01,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 123. [2021-11-21 00:34:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 122 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 140 transitions. [2021-11-21 00:34:01,088 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 140 transitions. Word has length 69 [2021-11-21 00:34:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:01,088 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 140 transitions. [2021-11-21 00:34:01,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 140 transitions. [2021-11-21 00:34:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-21 00:34:01,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:01,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:01,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-21 00:34:01,090 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:01,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:01,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1858906752, now seen corresponding path program 1 times [2021-11-21 00:34:01,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:01,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201335687] [2021-11-21 00:34:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:01,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:01,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:01,567 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:01,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201335687] [2021-11-21 00:34:01,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201335687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:01,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:01,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-21 00:34:01,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335752407] [2021-11-21 00:34:01,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:01,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-21 00:34:01,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:01,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-21 00:34:01,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-11-21 00:34:01,569 INFO L87 Difference]: Start difference. First operand 123 states and 140 transitions. Second operand has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:03,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:03,416 INFO L93 Difference]: Finished difference Result 399 states and 471 transitions. [2021-11-21 00:34:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-21 00:34:03,417 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-21 00:34:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:03,418 INFO L225 Difference]: With dead ends: 399 [2021-11-21 00:34:03,418 INFO L226 Difference]: Without dead ends: 391 [2021-11-21 00:34:03,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=214, Invalid=1118, Unknown=0, NotChecked=0, Total=1332 [2021-11-21 00:34:03,419 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 776 mSDsluCounter, 3877 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 4096 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:03,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 4096 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:34:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-21 00:34:03,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 137. [2021-11-21 00:34:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 135 states have (on average 1.162962962962963) internal successors, (157), 136 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 157 transitions. [2021-11-21 00:34:03,463 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 157 transitions. Word has length 69 [2021-11-21 00:34:03,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:03,464 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 157 transitions. [2021-11-21 00:34:03,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 157 transitions. [2021-11-21 00:34:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-21 00:34:03,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:03,465 INFO 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] [2021-11-21 00:34:03,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-21 00:34:03,466 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:03,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:03,466 INFO L85 PathProgramCache]: Analyzing trace with hash 7936992, now seen corresponding path program 1 times [2021-11-21 00:34:03,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:03,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891956501] [2021-11-21 00:34:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:03,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:03,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:03,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:03,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891956501] [2021-11-21 00:34:03,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891956501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:03,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:03,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:34:03,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71183911] [2021-11-21 00:34:03,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:03,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:34:03,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:03,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:34:03,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:34:03,815 INFO L87 Difference]: Start difference. First operand 137 states and 157 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 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) [2021-11-21 00:34:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:05,106 INFO L93 Difference]: Finished difference Result 367 states and 450 transitions. [2021-11-21 00:34:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 00:34:05,106 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 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 [2021-11-21 00:34:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:05,108 INFO L225 Difference]: With dead ends: 367 [2021-11-21 00:34:05,108 INFO L226 Difference]: Without dead ends: 352 [2021-11-21 00:34:05,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:34:05,109 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 726 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:05,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 1968 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:34:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-11-21 00:34:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 111. [2021-11-21 00:34:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 110 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) [2021-11-21 00:34:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2021-11-21 00:34:05,146 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 70 [2021-11-21 00:34:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:05,147 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2021-11-21 00:34:05,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 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) [2021-11-21 00:34:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2021-11-21 00:34:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-21 00:34:05,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:05,148 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, 1, 1, 1, 1, 1] [2021-11-21 00:34:05,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-21 00:34:05,149 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:05,149 INFO L85 PathProgramCache]: Analyzing trace with hash -646385871, now seen corresponding path program 1 times [2021-11-21 00:34:05,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:05,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780515600] [2021-11-21 00:34:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:05,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:05,193 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:05,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780515600] [2021-11-21 00:34:05,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780515600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:05,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:05,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:34:05,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946918540] [2021-11-21 00:34:05,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:05,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:34:05,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:05,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:34:05,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:05,195 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2021-11-21 00:34:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:05,292 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2021-11-21 00:34:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:34:05,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 [2021-11-21 00:34:05,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:05,293 INFO L225 Difference]: With dead ends: 185 [2021-11-21 00:34:05,293 INFO L226 Difference]: Without dead ends: 148 [2021-11-21 00:34:05,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:05,294 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 53 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:05,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 241 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:34:05,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-21 00:34:05,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 142. [2021-11-21 00:34:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 141 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 168 transitions. [2021-11-21 00:34:05,364 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 168 transitions. Word has length 84 [2021-11-21 00:34:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:05,365 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 168 transitions. [2021-11-21 00:34:05,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2021-11-21 00:34:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 168 transitions. [2021-11-21 00:34:05,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-21 00:34:05,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:05,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:05,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-21 00:34:05,365 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:05,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1526245917, now seen corresponding path program 1 times [2021-11-21 00:34:05,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:05,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319481959] [2021-11-21 00:34:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:05,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:05,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:05,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319481959] [2021-11-21 00:34:05,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319481959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:05,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:05,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:34:05,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226153358] [2021-11-21 00:34:05,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:05,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:34:05,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:05,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:34:05,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:05,412 INFO L87 Difference]: Start difference. First operand 142 states and 168 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:05,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:05,593 INFO L93 Difference]: Finished difference Result 278 states and 346 transitions. [2021-11-21 00:34:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:34:05,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-21 00:34:05,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:05,595 INFO L225 Difference]: With dead ends: 278 [2021-11-21 00:34:05,596 INFO L226 Difference]: Without dead ends: 210 [2021-11-21 00:34:05,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:05,597 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 46 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:05,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 241 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:34:05,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-21 00:34:05,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 200. [2021-11-21 00:34:05,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.2261306532663316) internal successors, (244), 199 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 244 transitions. [2021-11-21 00:34:05,716 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 244 transitions. Word has length 87 [2021-11-21 00:34:05,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:05,716 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 244 transitions. [2021-11-21 00:34:05,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 244 transitions. [2021-11-21 00:34:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-21 00:34:05,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:05,717 INFO 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] [2021-11-21 00:34:05,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-21 00:34:05,718 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:05,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:05,718 INFO L85 PathProgramCache]: Analyzing trace with hash 445440857, now seen corresponding path program 1 times [2021-11-21 00:34:05,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:05,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981819276] [2021-11-21 00:34:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:05,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:05,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:05,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981819276] [2021-11-21 00:34:05,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981819276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:05,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:05,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:34:05,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284446135] [2021-11-21 00:34:05,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:05,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:34:05,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:34:05,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:05,764 INFO L87 Difference]: Start difference. First operand 200 states and 244 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:06,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:06,006 INFO L93 Difference]: Finished difference Result 452 states and 574 transitions. [2021-11-21 00:34:06,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:34:06,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-21 00:34:06,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:06,008 INFO L225 Difference]: With dead ends: 452 [2021-11-21 00:34:06,008 INFO L226 Difference]: Without dead ends: 326 [2021-11-21 00:34:06,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:06,009 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 39 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:06,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 241 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:34:06,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-21 00:34:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 308. [2021-11-21 00:34:06,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.250814332247557) internal successors, (384), 307 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 384 transitions. [2021-11-21 00:34:06,224 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 384 transitions. Word has length 90 [2021-11-21 00:34:06,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:06,224 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 384 transitions. [2021-11-21 00:34:06,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:06,225 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 384 transitions. [2021-11-21 00:34:06,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-21 00:34:06,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:06,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:06,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-21 00:34:06,226 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1365580448, now seen corresponding path program 1 times [2021-11-21 00:34:06,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:06,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443432030] [2021-11-21 00:34:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:06,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:06,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:06,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443432030] [2021-11-21 00:34:06,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443432030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:06,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:06,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:34:06,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129090737] [2021-11-21 00:34:06,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:06,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:34:06,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:06,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:34:06,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:06,288 INFO L87 Difference]: Start difference. First operand 308 states and 384 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:06,696 INFO L93 Difference]: Finished difference Result 776 states and 994 transitions. [2021-11-21 00:34:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:34:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-21 00:34:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:06,699 INFO L225 Difference]: With dead ends: 776 [2021-11-21 00:34:06,699 INFO L226 Difference]: Without dead ends: 542 [2021-11-21 00:34:06,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:06,702 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 29 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:06,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 241 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:34:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-11-21 00:34:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 508. [2021-11-21 00:34:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.26232741617357) internal successors, (640), 507 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) [2021-11-21 00:34:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 640 transitions. [2021-11-21 00:34:07,044 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 640 transitions. Word has length 93 [2021-11-21 00:34:07,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:07,045 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 640 transitions. [2021-11-21 00:34:07,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:07,045 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 640 transitions. [2021-11-21 00:34:07,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-21 00:34:07,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:07,046 INFO 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] [2021-11-21 00:34:07,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-21 00:34:07,046 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash 795640899, now seen corresponding path program 1 times [2021-11-21 00:34:07,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:07,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038177748] [2021-11-21 00:34:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:07,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:07,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:07,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038177748] [2021-11-21 00:34:07,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038177748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:07,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:07,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:34:07,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101127052] [2021-11-21 00:34:07,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:07,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:34:07,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:34:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:34:07,116 INFO L87 Difference]: Start difference. First operand 508 states and 640 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:08,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:08,276 INFO L93 Difference]: Finished difference Result 1933 states and 2459 transitions. [2021-11-21 00:34:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:34:08,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-21 00:34:08,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:08,287 INFO L225 Difference]: With dead ends: 1933 [2021-11-21 00:34:08,287 INFO L226 Difference]: Without dead ends: 1499 [2021-11-21 00:34:08,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:34:08,289 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 521 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:08,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 764 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:34:08,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2021-11-21 00:34:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 729. [2021-11-21 00:34:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.2486263736263736) internal successors, (909), 728 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 909 transitions. [2021-11-21 00:34:08,846 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 909 transitions. Word has length 96 [2021-11-21 00:34:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:08,846 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 909 transitions. [2021-11-21 00:34:08,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 909 transitions. [2021-11-21 00:34:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-21 00:34:08,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:08,847 INFO 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] [2021-11-21 00:34:08,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-21 00:34:08,848 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:08,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1184955644, now seen corresponding path program 1 times [2021-11-21 00:34:08,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:08,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049496239] [2021-11-21 00:34:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:08,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:08,965 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:08,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049496239] [2021-11-21 00:34:08,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049496239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:08,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:08,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:34:08,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075214000] [2021-11-21 00:34:08,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:08,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:34:08,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:08,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:34:08,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:34:08,968 INFO L87 Difference]: Start difference. First operand 729 states and 909 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:09,568 INFO L93 Difference]: Finished difference Result 1386 states and 1740 transitions. [2021-11-21 00:34:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:34:09,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-21 00:34:09,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:09,572 INFO L225 Difference]: With dead ends: 1386 [2021-11-21 00:34:09,572 INFO L226 Difference]: Without dead ends: 731 [2021-11-21 00:34:09,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:34:09,574 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 302 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:09,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 247 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:34:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-11-21 00:34:10,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2021-11-21 00:34:10,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.2472527472527473) internal successors, (908), 728 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 908 transitions. [2021-11-21 00:34:10,119 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 908 transitions. Word has length 98 [2021-11-21 00:34:10,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:10,119 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 908 transitions. [2021-11-21 00:34:10,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:10,120 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 908 transitions. [2021-11-21 00:34:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-21 00:34:10,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:10,121 INFO 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] [2021-11-21 00:34:10,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-21 00:34:10,121 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:10,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:10,122 INFO L85 PathProgramCache]: Analyzing trace with hash -776759362, now seen corresponding path program 1 times [2021-11-21 00:34:10,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:10,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582251793] [2021-11-21 00:34:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:10,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:10,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:10,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582251793] [2021-11-21 00:34:10,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582251793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:10,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:10,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:34:10,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408628361] [2021-11-21 00:34:10,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:10,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:34:10,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:10,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:34:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:10,164 INFO L87 Difference]: Start difference. First operand 729 states and 908 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:10,882 INFO L93 Difference]: Finished difference Result 1658 states and 2082 transitions. [2021-11-21 00:34:10,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:34:10,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-21 00:34:10,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:10,886 INFO L225 Difference]: With dead ends: 1658 [2021-11-21 00:34:10,886 INFO L226 Difference]: Without dead ends: 1003 [2021-11-21 00:34:10,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:10,887 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 65 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:10,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 185 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:34:10,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-21 00:34:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 1001. [2021-11-21 00:34:11,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 1.243) internal successors, (1243), 1000 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:11,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1243 transitions. [2021-11-21 00:34:11,608 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1243 transitions. Word has length 98 [2021-11-21 00:34:11,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:11,608 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1243 transitions. [2021-11-21 00:34:11,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1243 transitions. [2021-11-21 00:34:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-21 00:34:11,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:11,610 INFO 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] [2021-11-21 00:34:11,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-21 00:34:11,610 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:11,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1255564868, now seen corresponding path program 1 times [2021-11-21 00:34:11,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:11,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222468181] [2021-11-21 00:34:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:11,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:11,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:11,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222468181] [2021-11-21 00:34:11,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222468181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:11,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:11,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:34:11,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922495884] [2021-11-21 00:34:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:11,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:34:11,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:34:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:34:11,692 INFO L87 Difference]: Start difference. First operand 1001 states and 1243 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:12,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:12,910 INFO L93 Difference]: Finished difference Result 1350 states and 1666 transitions. [2021-11-21 00:34:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 00:34:12,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-21 00:34:12,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:12,915 INFO L225 Difference]: With dead ends: 1350 [2021-11-21 00:34:12,916 INFO L226 Difference]: Without dead ends: 1348 [2021-11-21 00:34:12,916 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 [2021-11-21 00:34:12,917 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 267 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:12,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 764 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:34:12,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-11-21 00:34:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1001. [2021-11-21 00:34:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 1.227) internal successors, (1227), 1000 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1227 transitions. [2021-11-21 00:34:13,748 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1227 transitions. Word has length 99 [2021-11-21 00:34:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:13,748 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1227 transitions. [2021-11-21 00:34:13,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:13,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1227 transitions. [2021-11-21 00:34:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-21 00:34:13,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:13,753 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] [2021-11-21 00:34:13,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-21 00:34:13,757 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:13,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:13,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2133397746, now seen corresponding path program 1 times [2021-11-21 00:34:13,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:13,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728430434] [2021-11-21 00:34:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:13,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:17,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:17,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728430434] [2021-11-21 00:34:17,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728430434] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:34:17,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231745335] [2021-11-21 00:34:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:17,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:34:17,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:34:17,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:34:17,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:34:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:17,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 00:34:17,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 00:34:18,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:34:18,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231745335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:18,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:34:18,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [34] total 40 [2021-11-21 00:34:18,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637728934] [2021-11-21 00:34:18,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:18,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:34:18,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:34:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1527, Unknown=0, NotChecked=0, Total=1640 [2021-11-21 00:34:18,727 INFO L87 Difference]: Start difference. First operand 1001 states and 1227 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 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) [2021-11-21 00:34:21,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:21,290 INFO L93 Difference]: Finished difference Result 2461 states and 3037 transitions. [2021-11-21 00:34:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:34:21,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 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 115 [2021-11-21 00:34:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:21,299 INFO L225 Difference]: With dead ends: 2461 [2021-11-21 00:34:21,299 INFO L226 Difference]: Without dead ends: 1528 [2021-11-21 00:34:21,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=177, Invalid=2273, Unknown=0, NotChecked=0, Total=2450 [2021-11-21 00:34:21,303 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 311 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:21,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 339 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:34:21,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-11-21 00:34:22,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1001. [2021-11-21 00:34:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 1.226) internal successors, (1226), 1000 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:22,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1226 transitions. [2021-11-21 00:34:22,268 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1226 transitions. Word has length 115 [2021-11-21 00:34:22,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:22,269 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1226 transitions. [2021-11-21 00:34:22,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 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) [2021-11-21 00:34:22,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1226 transitions. [2021-11-21 00:34:22,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-21 00:34:22,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:22,270 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] [2021-11-21 00:34:22,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 00:34:22,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-21 00:34:22,484 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:22,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:22,485 INFO L85 PathProgramCache]: Analyzing trace with hash -250941641, now seen corresponding path program 1 times [2021-11-21 00:34:22,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:22,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059238397] [2021-11-21 00:34:22,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:22,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 00:34:23,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:23,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059238397] [2021-11-21 00:34:23,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059238397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:23,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:23,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-21 00:34:23,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050599375] [2021-11-21 00:34:23,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:23,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-21 00:34:23,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:23,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-21 00:34:23,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-11-21 00:34:23,188 INFO L87 Difference]: Start difference. First operand 1001 states and 1226 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:27,342 INFO L93 Difference]: Finished difference Result 3766 states and 4638 transitions. [2021-11-21 00:34:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 00:34:27,343 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have 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 [2021-11-21 00:34:27,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:27,353 INFO L225 Difference]: With dead ends: 3766 [2021-11-21 00:34:27,354 INFO L226 Difference]: Without dead ends: 2832 [2021-11-21 00:34:27,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=274, Invalid=1286, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 00:34:27,359 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 1055 mSDsluCounter, 2883 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 3093 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:27,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 3093 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:34:27,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-11-21 00:34:28,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1016. [2021-11-21 00:34:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 1.2246305418719212) internal successors, (1243), 1015 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:28,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1243 transitions. [2021-11-21 00:34:28,233 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1243 transitions. Word has length 117 [2021-11-21 00:34:28,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:28,233 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 1243 transitions. [2021-11-21 00:34:28,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:28,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1243 transitions. [2021-11-21 00:34:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-21 00:34:28,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:28,235 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] [2021-11-21 00:34:28,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-21 00:34:28,236 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-21 00:34:28,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1958010729, now seen corresponding path program 1 times [2021-11-21 00:34:28,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:28,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639351115] [2021-11-21 00:34:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:28,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:30,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:30,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639351115] [2021-11-21 00:34:30,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639351115] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:34:30,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089491234] [2021-11-21 00:34:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:30,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:34:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:34:30,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:34:30,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c654f51-1b5d-4c2e-bf2f-0134a23f3732/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:34:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:30,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-21 00:34:30,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:15,861 INFO L328 TraceCheckSpWp]: Computing backward predicates...