./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF --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 700a368a7186f7babba672e6f0e63377b52860406179fc124b8eed545215de4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:38:30,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:38:30,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:38:30,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:38:30,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:38:30,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:38:30,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:38:30,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:38:30,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:38:30,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:38:30,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:38:30,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:38:30,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:38:30,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:38:30,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:38:30,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:38:30,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:38:30,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:38:30,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:38:30,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:38:30,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:38:30,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:38:30,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:38:30,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:38:30,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:38:30,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:38:30,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:38:30,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:38:30,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:38:30,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:38:30,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:38:30,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:38:30,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:38:30,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:38:30,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:38:30,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:38:30,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:38:30,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:38:30,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:38:30,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:38:30,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:38:30,198 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:38:30,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:38:30,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:38:30,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:38:30,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:38:30,250 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:38:30,250 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:38:30,250 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:38:30,251 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:38:30,258 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:38:30,258 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:38:30,259 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:38:30,260 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:38:30,260 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:38:30,260 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:38:30,261 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:38:30,261 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:38:30,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:38:30,262 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:38:30,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:38:30,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:38:30,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:38:30,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:38:30,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:38:30,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:38:30,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:38:30,264 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:38:30,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:38:30,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:38:30,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:38:30,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:38:30,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:38:30,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:30,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:38:30,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:38:30,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:38:30,269 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:38:30,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:38:30,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:38:30,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:38:30,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:38:30,270 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 700a368a7186f7babba672e6f0e63377b52860406179fc124b8eed545215de4f [2021-11-13 02:38:30,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:38:30,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:38:30,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:38:30,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:38:30,619 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:38:30,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2021-11-13 02:38:30,717 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/data/4e4ee3c71/7353fd963be346ae9a692f2ed8bfaaeb/FLAGd5a3a451e [2021-11-13 02:38:31,584 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:38:31,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2021-11-13 02:38:31,629 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/data/4e4ee3c71/7353fd963be346ae9a692f2ed8bfaaeb/FLAGd5a3a451e [2021-11-13 02:38:32,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/data/4e4ee3c71/7353fd963be346ae9a692f2ed8bfaaeb [2021-11-13 02:38:32,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:38:32,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:38:32,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:32,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:38:32,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:38:32,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:32" (1/1) ... [2021-11-13 02:38:32,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e5b9029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:32, skipping insertion in model container [2021-11-13 02:38:32,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:32" (1/1) ... [2021-11-13 02:38:32,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:38:32,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:38:32,684 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14181,14194] [2021-11-13 02:38:32,721 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18885,18898] [2021-11-13 02:38:32,735 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20177,20190] [2021-11-13 02:38:32,744 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20935,20948] [2021-11-13 02:38:32,759 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22598,22611] [2021-11-13 02:38:32,770 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23356,23369] [2021-11-13 02:38:32,779 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24485,24498] [2021-11-13 02:38:32,797 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27110,27123] [2021-11-13 02:38:32,804 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27871,27884] [2021-11-13 02:38:32,813 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29003,29016] [2021-11-13 02:38:32,827 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31094,31107] [2021-11-13 02:38:32,872 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35189,35202] [2021-11-13 02:38:32,879 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35950,35963] [2021-11-13 02:38:32,888 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37043,37056] [2021-11-13 02:38:32,902 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39095,39108] [2021-11-13 02:38:32,937 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42827,42840] [2021-11-13 02:38:32,993 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50005,50018] [2021-11-13 02:38:32,999 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50766,50779] [2021-11-13 02:38:33,007 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51898,51911] [2021-11-13 02:38:33,020 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[53989,54002] [2021-11-13 02:38:33,040 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57550,57563] [2021-11-13 02:38:33,096 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63548,63561] [2021-11-13 02:38:33,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:33,551 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:38:33,642 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14181,14194] [2021-11-13 02:38:33,662 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18885,18898] [2021-11-13 02:38:33,669 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20177,20190] [2021-11-13 02:38:33,675 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20935,20948] [2021-11-13 02:38:33,683 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22598,22611] [2021-11-13 02:38:33,688 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23356,23369] [2021-11-13 02:38:33,694 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24485,24498] [2021-11-13 02:38:33,709 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27110,27123] [2021-11-13 02:38:33,713 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27871,27884] [2021-11-13 02:38:33,719 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29003,29016] [2021-11-13 02:38:33,730 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31094,31107] [2021-11-13 02:38:33,747 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35189,35202] [2021-11-13 02:38:33,752 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35950,35963] [2021-11-13 02:38:33,779 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37043,37056] [2021-11-13 02:38:33,789 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39095,39108] [2021-11-13 02:38:33,807 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42827,42840] [2021-11-13 02:38:33,844 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50005,50018] [2021-11-13 02:38:33,849 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50766,50779] [2021-11-13 02:38:33,855 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51898,51911] [2021-11-13 02:38:33,865 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[53989,54002] [2021-11-13 02:38:33,881 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57550,57563] [2021-11-13 02:38:33,908 WARN L228 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_79dc5292-501f-4b9f-bb8a-e5800e409b19/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63548,63561] [2021-11-13 02:38:34,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:34,255 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:38:34,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34 WrapperNode [2021-11-13 02:38:34,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:34,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:34,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:38:34,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:38:34,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34" (1/1) ... [2021-11-13 02:38:34,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34" (1/1) ... [2021-11-13 02:38:34,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:34,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:38:34,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:38:34,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:38:34,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34" (1/1) ... [2021-11-13 02:38:34,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34" (1/1) ... [2021-11-13 02:38:34,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34" (1/1) ... [2021-11-13 02:38:34,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34" (1/1) ... [2021-11-13 02:38:34,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34" (1/1) ... [2021-11-13 02:38:34,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34" (1/1) ... [2021-11-13 02:38:34,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34" (1/1) ... [2021-11-13 02:38:34,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:38:34,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:38:34,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:38:34,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:38:34,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34" (1/1) ... [2021-11-13 02:38:34,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:34,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:34,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:38:34,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:38:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:38:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:38:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:38:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:38:38,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:38:38,556 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 02:38:38,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:38 BoogieIcfgContainer [2021-11-13 02:38:38,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:38:38,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:38:38,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:38:38,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:38:38,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:38:32" (1/3) ... [2021-11-13 02:38:38,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a3e5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:38, skipping insertion in model container [2021-11-13 02:38:38,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:34" (2/3) ... [2021-11-13 02:38:38,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a3e5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:38, skipping insertion in model container [2021-11-13 02:38:38,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:38" (3/3) ... [2021-11-13 02:38:38,575 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2021-11-13 02:38:38,581 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:38:38,581 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-11-13 02:38:38,656 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:38:38,696 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 [2021-11-13 02:38:38,696 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-11-13 02:38:38,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 1095 states, 1072 states have (on average 1.8600746268656716) internal successors, (1994), 1094 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:38,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-13 02:38:38,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:38,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:38,777 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:38,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:38,782 INFO L85 PathProgramCache]: Analyzing trace with hash 714056904, now seen corresponding path program 1 times [2021-11-13 02:38:38,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:38,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590902503] [2021-11-13 02:38:38,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:38,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:39,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:39,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590902503] [2021-11-13 02:38:39,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590902503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:39,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:39,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:38:39,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078791549] [2021-11-13 02:38:39,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:39,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:39,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:39,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:39,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:39,490 INFO L87 Difference]: Start difference. First operand has 1095 states, 1072 states have (on average 1.8600746268656716) internal successors, (1994), 1094 states have internal predecessors, (1994), 0 states have call successors, (0), 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 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:40,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:40,331 INFO L93 Difference]: Finished difference Result 1642 states and 2887 transitions. [2021-11-13 02:38:40,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:38:40,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-13 02:38:40,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:40,352 INFO L225 Difference]: With dead ends: 1642 [2021-11-13 02:38:40,352 INFO L226 Difference]: Without dead ends: 849 [2021-11-13 02:38:40,359 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 [2021-11-13 02:38:40,363 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 4330 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 527.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4330 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.64ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 659.27ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:40,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4330 Valid, 1022 Invalid, 525 Unknown, 0 Unchecked, 20.64ms Time], IncrementalHoareTripleChecker [19 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 659.27ms Time] [2021-11-13 02:38:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-13 02:38:40,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2021-11-13 02:38:40,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 827 states have (on average 1.2962515114873034) internal successors, (1072), 848 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1072 transitions. [2021-11-13 02:38:40,508 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1072 transitions. Word has length 85 [2021-11-13 02:38:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:40,508 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 1072 transitions. [2021-11-13 02:38:40,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:40,509 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1072 transitions. [2021-11-13 02:38:40,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-13 02:38:40,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:40,514 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] [2021-11-13 02:38:40,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:38:40,514 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:40,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:40,515 INFO L85 PathProgramCache]: Analyzing trace with hash -32531416, now seen corresponding path program 1 times [2021-11-13 02:38:40,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:40,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947652733] [2021-11-13 02:38:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:40,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:40,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:40,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947652733] [2021-11-13 02:38:40,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947652733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:40,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:40,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:38:40,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318216494] [2021-11-13 02:38:40,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:40,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:40,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:40,711 INFO L87 Difference]: Start difference. First operand 849 states and 1072 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:41,310 INFO L93 Difference]: Finished difference Result 1390 states and 1805 transitions. [2021-11-13 02:38:41,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:38:41,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-13 02:38:41,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:41,317 INFO L225 Difference]: With dead ends: 1390 [2021-11-13 02:38:41,317 INFO L226 Difference]: Without dead ends: 718 [2021-11-13 02:38:41,319 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 [2021-11-13 02:38:41,321 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 2716 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 396.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.19ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 501.89ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:41,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2716 Valid, 533 Invalid, 404 Unknown, 0 Unchecked, 11.19ms Time], IncrementalHoareTripleChecker [7 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 501.89ms Time] [2021-11-13 02:38:41,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-11-13 02:38:41,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2021-11-13 02:38:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 696 states have (on average 1.3275862068965518) internal successors, (924), 717 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 924 transitions. [2021-11-13 02:38:41,362 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 924 transitions. Word has length 86 [2021-11-13 02:38:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:41,363 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 924 transitions. [2021-11-13 02:38:41,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:41,364 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 924 transitions. [2021-11-13 02:38:41,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 02:38:41,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:41,367 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] [2021-11-13 02:38:41,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 02:38:41,368 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:41,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:41,369 INFO L85 PathProgramCache]: Analyzing trace with hash -15254791, now seen corresponding path program 1 times [2021-11-13 02:38:41,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:41,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612565818] [2021-11-13 02:38:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:41,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:41,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:41,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612565818] [2021-11-13 02:38:41,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612565818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:41,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:41,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:38:41,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843241685] [2021-11-13 02:38:41,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:41,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:41,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:41,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:41,533 INFO L87 Difference]: Start difference. First operand 718 states and 924 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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) [2021-11-13 02:38:42,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:42,194 INFO L93 Difference]: Finished difference Result 1259 states and 1656 transitions. [2021-11-13 02:38:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:38:42,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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 [2021-11-13 02:38:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:42,199 INFO L225 Difference]: With dead ends: 1259 [2021-11-13 02:38:42,199 INFO L226 Difference]: Without dead ends: 678 [2021-11-13 02:38:42,200 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 [2021-11-13 02:38:42,202 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 2424 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 444.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.88ms SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 554.45ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:42,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2424 Valid, 438 Invalid, 590 Unknown, 0 Unchecked, 8.88ms Time], IncrementalHoareTripleChecker [107 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 554.45ms Time] [2021-11-13 02:38:42,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-11-13 02:38:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 678. [2021-11-13 02:38:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 656 states have (on average 1.333841463414634) internal successors, (875), 677 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 875 transitions. [2021-11-13 02:38:42,237 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 875 transitions. Word has length 87 [2021-11-13 02:38:42,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:42,238 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 875 transitions. [2021-11-13 02:38:42,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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) [2021-11-13 02:38:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 875 transitions. [2021-11-13 02:38:42,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-13 02:38:42,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:42,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:42,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 02:38:42,241 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:42,242 INFO L85 PathProgramCache]: Analyzing trace with hash -792677777, now seen corresponding path program 1 times [2021-11-13 02:38:42,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:42,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896687414] [2021-11-13 02:38:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:42,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:42,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:42,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896687414] [2021-11-13 02:38:42,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896687414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:42,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:42,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:38:42,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865830157] [2021-11-13 02:38:42,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:42,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:42,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:42,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:42,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:42,341 INFO L87 Difference]: Start difference. First operand 678 states and 875 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:42,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:42,902 INFO L93 Difference]: Finished difference Result 1219 states and 1606 transitions. [2021-11-13 02:38:42,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:38:42,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-13 02:38:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:42,907 INFO L225 Difference]: With dead ends: 1219 [2021-11-13 02:38:42,908 INFO L226 Difference]: Without dead ends: 640 [2021-11-13 02:38:42,909 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 [2021-11-13 02:38:42,910 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 2387 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 386.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.05ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 474.13ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:42,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2387 Valid, 470 Invalid, 421 Unknown, 0 Unchecked, 9.05ms Time], IncrementalHoareTripleChecker [29 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 474.13ms Time] [2021-11-13 02:38:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-13 02:38:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2021-11-13 02:38:42,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 618 states have (on average 1.3462783171521036) internal successors, (832), 639 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 832 transitions. [2021-11-13 02:38:42,988 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 832 transitions. Word has length 88 [2021-11-13 02:38:42,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:42,988 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 832 transitions. [2021-11-13 02:38:42,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 832 transitions. [2021-11-13 02:38:42,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 02:38:42,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:42,991 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] [2021-11-13 02:38:42,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 02:38:42,992 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:42,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:42,993 INFO L85 PathProgramCache]: Analyzing trace with hash -98223662, now seen corresponding path program 1 times [2021-11-13 02:38:42,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:42,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282857436] [2021-11-13 02:38:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:42,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:43,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:43,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282857436] [2021-11-13 02:38:43,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282857436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:43,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:43,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:38:43,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183131164] [2021-11-13 02:38:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:43,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:43,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:43,073 INFO L87 Difference]: Start difference. First operand 640 states and 832 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:43,613 INFO L93 Difference]: Finished difference Result 1181 states and 1562 transitions. [2021-11-13 02:38:43,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:38:43,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-13 02:38:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:43,619 INFO L225 Difference]: With dead ends: 1181 [2021-11-13 02:38:43,619 INFO L226 Difference]: Without dead ends: 615 [2021-11-13 02:38:43,620 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 [2021-11-13 02:38:43,622 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 2342 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 365.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.49ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 448.76ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:43,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 457 Invalid, 371 Unknown, 0 Unchecked, 8.49ms Time], IncrementalHoareTripleChecker [10 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 448.76ms Time] [2021-11-13 02:38:43,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-13 02:38:43,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2021-11-13 02:38:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 593 states have (on average 1.3558178752107926) internal successors, (804), 614 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:43,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 804 transitions. [2021-11-13 02:38:43,668 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 804 transitions. Word has length 89 [2021-11-13 02:38:43,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:43,668 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 804 transitions. [2021-11-13 02:38:43,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:43,669 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 804 transitions. [2021-11-13 02:38:43,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 02:38:43,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:43,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:43,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 02:38:43,672 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:43,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:43,673 INFO L85 PathProgramCache]: Analyzing trace with hash -887858356, now seen corresponding path program 1 times [2021-11-13 02:38:43,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:43,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392669186] [2021-11-13 02:38:43,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:43,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:43,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:43,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392669186] [2021-11-13 02:38:43,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392669186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:43,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:43,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:38:43,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443306655] [2021-11-13 02:38:43,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:43,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:43,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:43,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:43,771 INFO L87 Difference]: Start difference. First operand 615 states and 804 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 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) [2021-11-13 02:38:44,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:44,520 INFO L93 Difference]: Finished difference Result 1156 states and 1533 transitions. [2021-11-13 02:38:44,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:38:44,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 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 [2021-11-13 02:38:44,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:44,525 INFO L225 Difference]: With dead ends: 1156 [2021-11-13 02:38:44,525 INFO L226 Difference]: Without dead ends: 607 [2021-11-13 02:38:44,526 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 [2021-11-13 02:38:44,527 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 2237 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 497.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.13ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 639.36ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:44,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2237 Valid, 433 Invalid, 451 Unknown, 0 Unchecked, 9.13ms Time], IncrementalHoareTripleChecker [52 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 639.36ms Time] [2021-11-13 02:38:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-11-13 02:38:44,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2021-11-13 02:38:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3572649572649573) internal successors, (794), 606 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:44,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 794 transitions. [2021-11-13 02:38:44,589 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 794 transitions. Word has length 90 [2021-11-13 02:38:44,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:44,590 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 794 transitions. [2021-11-13 02:38:44,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 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) [2021-11-13 02:38:44,591 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 794 transitions. [2021-11-13 02:38:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 02:38:44,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:44,594 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] [2021-11-13 02:38:44,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 02:38:44,595 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1395319451, now seen corresponding path program 1 times [2021-11-13 02:38:44,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:44,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92418403] [2021-11-13 02:38:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:44,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:44,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:44,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92418403] [2021-11-13 02:38:44,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92418403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:44,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:44,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:38:44,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602166372] [2021-11-13 02:38:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:44,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:38:44,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:44,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:38:44,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:44,790 INFO L87 Difference]: Start difference. First operand 607 states and 794 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:46,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:46,412 INFO L93 Difference]: Finished difference Result 1097 states and 1427 transitions. [2021-11-13 02:38:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:38:46,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-13 02:38:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:46,420 INFO L225 Difference]: With dead ends: 1097 [2021-11-13 02:38:46,420 INFO L226 Difference]: Without dead ends: 1022 [2021-11-13 02:38:46,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:38:46,422 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 3432 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1045.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3432 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.64ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1274.59ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:46,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3432 Valid, 1998 Invalid, 1826 Unknown, 0 Unchecked, 24.64ms Time], IncrementalHoareTripleChecker [56 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 1274.59ms Time] [2021-11-13 02:38:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-11-13 02:38:46,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 607. [2021-11-13 02:38:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3555555555555556) internal successors, (793), 606 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:46,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 793 transitions. [2021-11-13 02:38:46,484 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 793 transitions. Word has length 91 [2021-11-13 02:38:46,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:46,484 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 793 transitions. [2021-11-13 02:38:46,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:46,485 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 793 transitions. [2021-11-13 02:38:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 02:38:46,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:46,488 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] [2021-11-13 02:38:46,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 02:38:46,488 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:46,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash 897316485, now seen corresponding path program 1 times [2021-11-13 02:38:46,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:46,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918494556] [2021-11-13 02:38:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:46,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:46,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:46,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918494556] [2021-11-13 02:38:46,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918494556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:46,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:46,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 02:38:46,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574710544] [2021-11-13 02:38:46,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:46,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:38:46,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:38:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:38:46,728 INFO L87 Difference]: Start difference. First operand 607 states and 793 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:48,955 INFO L93 Difference]: Finished difference Result 1192 states and 1541 transitions. [2021-11-13 02:38:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 02:38:48,956 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-13 02:38:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:48,963 INFO L225 Difference]: With dead ends: 1192 [2021-11-13 02:38:48,964 INFO L226 Difference]: Without dead ends: 1108 [2021-11-13 02:38:48,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-13 02:38:48,966 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 3681 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1455.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3681 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.75ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1780.45ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:48,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3681 Valid, 3209 Invalid, 2775 Unknown, 0 Unchecked, 30.75ms Time], IncrementalHoareTripleChecker [68 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 1780.45ms Time] [2021-11-13 02:38:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-11-13 02:38:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 616. [2021-11-13 02:38:49,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 594 states have (on average 1.3552188552188553) internal successors, (805), 615 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 805 transitions. [2021-11-13 02:38:49,032 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 805 transitions. Word has length 91 [2021-11-13 02:38:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:49,032 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 805 transitions. [2021-11-13 02:38:49,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 805 transitions. [2021-11-13 02:38:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 02:38:49,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:49,040 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] [2021-11-13 02:38:49,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 02:38:49,040 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:49,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:49,041 INFO L85 PathProgramCache]: Analyzing trace with hash 488471257, now seen corresponding path program 1 times [2021-11-13 02:38:49,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:49,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339315379] [2021-11-13 02:38:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:49,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:49,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:49,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339315379] [2021-11-13 02:38:49,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339315379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:49,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:49,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 02:38:49,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587124077] [2021-11-13 02:38:49,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:49,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:38:49,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:49,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:38:49,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:38:49,316 INFO L87 Difference]: Start difference. First operand 616 states and 805 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:51,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:51,507 INFO L93 Difference]: Finished difference Result 1114 states and 1438 transitions. [2021-11-13 02:38:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 02:38:51,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-13 02:38:51,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:51,514 INFO L225 Difference]: With dead ends: 1114 [2021-11-13 02:38:51,514 INFO L226 Difference]: Without dead ends: 1052 [2021-11-13 02:38:51,515 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 [2021-11-13 02:38:51,516 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 3414 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1436.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3414 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.99ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1745.35ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:51,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3414 Valid, 2818 Invalid, 2666 Unknown, 0 Unchecked, 26.99ms Time], IncrementalHoareTripleChecker [99 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 1745.35ms Time] [2021-11-13 02:38:51,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-11-13 02:38:51,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 620. [2021-11-13 02:38:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 598 states have (on average 1.3561872909698998) internal successors, (811), 619 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 811 transitions. [2021-11-13 02:38:51,573 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 811 transitions. Word has length 91 [2021-11-13 02:38:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:51,574 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 811 transitions. [2021-11-13 02:38:51,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:51,574 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 811 transitions. [2021-11-13 02:38:51,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 02:38:51,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:51,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:51,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 02:38:51,578 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:51,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1518141873, now seen corresponding path program 1 times [2021-11-13 02:38:51,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:51,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020674665] [2021-11-13 02:38:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:51,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:51,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:51,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020674665] [2021-11-13 02:38:51,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020674665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:51,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:51,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 02:38:51,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783978976] [2021-11-13 02:38:51,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:51,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:38:51,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:51,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:38:51,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:38:51,830 INFO L87 Difference]: Start difference. First operand 620 states and 811 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:54,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:54,063 INFO L93 Difference]: Finished difference Result 1149 states and 1495 transitions. [2021-11-13 02:38:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 02:38:54,064 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-13 02:38:54,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:54,070 INFO L225 Difference]: With dead ends: 1149 [2021-11-13 02:38:54,070 INFO L226 Difference]: Without dead ends: 1074 [2021-11-13 02:38:54,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-13 02:38:54,073 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 3417 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1423.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3417 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.42ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1765.98ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:54,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3417 Valid, 2869 Invalid, 2598 Unknown, 0 Unchecked, 25.42ms Time], IncrementalHoareTripleChecker [63 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 1765.98ms Time] [2021-11-13 02:38:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-11-13 02:38:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 622. [2021-11-13 02:38:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.355) internal successors, (813), 621 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 813 transitions. [2021-11-13 02:38:54,135 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 813 transitions. Word has length 91 [2021-11-13 02:38:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:54,136 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 813 transitions. [2021-11-13 02:38:54,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 813 transitions. [2021-11-13 02:38:54,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 02:38:54,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:54,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:54,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 02:38:54,140 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:54,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:54,140 INFO L85 PathProgramCache]: Analyzing trace with hash -977341548, now seen corresponding path program 1 times [2021-11-13 02:38:54,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:54,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151927194] [2021-11-13 02:38:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:54,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:54,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:54,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151927194] [2021-11-13 02:38:54,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151927194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:54,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:54,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:38:54,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241948722] [2021-11-13 02:38:54,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:54,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:38:54,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:54,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:38:54,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:54,307 INFO L87 Difference]: Start difference. First operand 622 states and 813 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:55,830 INFO L93 Difference]: Finished difference Result 1125 states and 1460 transitions. [2021-11-13 02:38:55,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:38:55,830 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-13 02:38:55,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:55,836 INFO L225 Difference]: With dead ends: 1125 [2021-11-13 02:38:55,836 INFO L226 Difference]: Without dead ends: 1041 [2021-11-13 02:38:55,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-13 02:38:55,838 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 3487 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1033.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3487 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.31ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1267.24ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:55,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3487 Valid, 2727 Invalid, 2311 Unknown, 0 Unchecked, 15.31ms Time], IncrementalHoareTripleChecker [57 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 1267.24ms Time] [2021-11-13 02:38:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-11-13 02:38:55,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 622. [2021-11-13 02:38:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.3533333333333333) internal successors, (812), 621 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 812 transitions. [2021-11-13 02:38:55,897 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 812 transitions. Word has length 91 [2021-11-13 02:38:55,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:55,898 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 812 transitions. [2021-11-13 02:38:55,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 812 transitions. [2021-11-13 02:38:55,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 02:38:55,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:55,901 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] [2021-11-13 02:38:55,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 02:38:55,901 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:55,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:55,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1386186776, now seen corresponding path program 1 times [2021-11-13 02:38:55,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:55,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742168298] [2021-11-13 02:38:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:55,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:56,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:56,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742168298] [2021-11-13 02:38:56,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742168298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:56,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:56,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:38:56,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115618193] [2021-11-13 02:38:56,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:56,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:38:56,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:56,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:38:56,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:38:56,022 INFO L87 Difference]: Start difference. First operand 622 states and 812 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:57,022 INFO L93 Difference]: Finished difference Result 1139 states and 1433 transitions. [2021-11-13 02:38:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:57,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-13 02:38:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:57,029 INFO L225 Difference]: With dead ends: 1139 [2021-11-13 02:38:57,029 INFO L226 Difference]: Without dead ends: 817 [2021-11-13 02:38:57,031 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 [2021-11-13 02:38:57,032 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 2494 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 637.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2494 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.85ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 820.84ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:57,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2494 Valid, 944 Invalid, 1074 Unknown, 0 Unchecked, 10.85ms Time], IncrementalHoareTripleChecker [70 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 820.84ms Time] [2021-11-13 02:38:57,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-11-13 02:38:57,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 622. [2021-11-13 02:38:57,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.3516666666666666) internal successors, (811), 621 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 811 transitions. [2021-11-13 02:38:57,111 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 811 transitions. Word has length 91 [2021-11-13 02:38:57,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:57,112 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 811 transitions. [2021-11-13 02:38:57,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:57,112 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 811 transitions. [2021-11-13 02:38:57,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:38:57,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:57,115 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] [2021-11-13 02:38:57,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 02:38:57,116 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:57,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:57,117 INFO L85 PathProgramCache]: Analyzing trace with hash 212783759, now seen corresponding path program 1 times [2021-11-13 02:38:57,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:57,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522870459] [2021-11-13 02:38:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:57,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:57,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:57,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522870459] [2021-11-13 02:38:57,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522870459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:57,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:57,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 02:38:57,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339151417] [2021-11-13 02:38:57,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:57,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:38:57,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:57,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:38:57,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:38:57,438 INFO L87 Difference]: Start difference. First operand 622 states and 811 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 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) [2021-11-13 02:38:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:59,553 INFO L93 Difference]: Finished difference Result 1129 states and 1456 transitions. [2021-11-13 02:38:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 02:38:59,554 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 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 [2021-11-13 02:38:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:59,563 INFO L225 Difference]: With dead ends: 1129 [2021-11-13 02:38:59,564 INFO L226 Difference]: Without dead ends: 1067 [2021-11-13 02:38:59,566 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 [2021-11-13 02:38:59,569 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 3059 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1348.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3059 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.03ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1675.27ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:59,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3059 Valid, 2649 Invalid, 2479 Unknown, 0 Unchecked, 19.03ms Time], IncrementalHoareTripleChecker [84 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 1675.27ms Time] [2021-11-13 02:38:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-11-13 02:38:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 633. [2021-11-13 02:38:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 611 states have (on average 1.353518821603928) internal successors, (827), 632 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 827 transitions. [2021-11-13 02:38:59,660 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 827 transitions. Word has length 93 [2021-11-13 02:38:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:59,660 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 827 transitions. [2021-11-13 02:38:59,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 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) [2021-11-13 02:38:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 827 transitions. [2021-11-13 02:38:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:38:59,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:59,664 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] [2021-11-13 02:38:59,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 02:38:59,665 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:38:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:59,665 INFO L85 PathProgramCache]: Analyzing trace with hash -619105423, now seen corresponding path program 1 times [2021-11-13 02:38:59,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:59,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020428192] [2021-11-13 02:38:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:59,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:59,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:59,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020428192] [2021-11-13 02:38:59,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020428192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:59,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:59,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 02:38:59,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493189593] [2021-11-13 02:38:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:59,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:38:59,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:38:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:38:59,932 INFO L87 Difference]: Start difference. First operand 633 states and 827 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 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) [2021-11-13 02:39:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:01,642 INFO L93 Difference]: Finished difference Result 1238 states and 1591 transitions. [2021-11-13 02:39:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 02:39:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 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 [2021-11-13 02:39:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:01,651 INFO L225 Difference]: With dead ends: 1238 [2021-11-13 02:39:01,652 INFO L226 Difference]: Without dead ends: 1148 [2021-11-13 02:39:01,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-13 02:39:01,654 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 4757 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 2410 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1055.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4757 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 2487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.80ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1342.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:01,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4757 Valid, 2813 Invalid, 2487 Unknown, 0 Unchecked, 13.80ms Time], IncrementalHoareTripleChecker [77 Valid, 2410 Invalid, 0 Unknown, 0 Unchecked, 1342.48ms Time] [2021-11-13 02:39:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-11-13 02:39:01,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 637. [2021-11-13 02:39:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 615 states have (on average 1.351219512195122) internal successors, (831), 636 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 831 transitions. [2021-11-13 02:39:01,735 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 831 transitions. Word has length 93 [2021-11-13 02:39:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:01,736 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 831 transitions. [2021-11-13 02:39:01,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 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) [2021-11-13 02:39:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 831 transitions. [2021-11-13 02:39:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:39:01,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:01,740 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] [2021-11-13 02:39:01,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 02:39:01,740 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:01,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:01,741 INFO L85 PathProgramCache]: Analyzing trace with hash -202062695, now seen corresponding path program 1 times [2021-11-13 02:39:01,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:01,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249540035] [2021-11-13 02:39:01,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:01,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:01,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:01,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249540035] [2021-11-13 02:39:01,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249540035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:01,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:01,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:01,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73251200] [2021-11-13 02:39:01,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:01,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:01,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:01,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:01,985 INFO L87 Difference]: Start difference. First operand 637 states and 831 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:03,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:03,464 INFO L93 Difference]: Finished difference Result 1247 states and 1617 transitions. [2021-11-13 02:39:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:03,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-13 02:39:03,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:03,470 INFO L225 Difference]: With dead ends: 1247 [2021-11-13 02:39:03,470 INFO L226 Difference]: Without dead ends: 1049 [2021-11-13 02:39:03,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:03,472 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 2901 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 960.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2901 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.39ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1182.77ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:03,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2901 Valid, 2586 Invalid, 2222 Unknown, 0 Unchecked, 11.39ms Time], IncrementalHoareTripleChecker [20 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 1182.77ms Time] [2021-11-13 02:39:03,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2021-11-13 02:39:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 622. [2021-11-13 02:39:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.35) internal successors, (810), 621 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:03,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 810 transitions. [2021-11-13 02:39:03,551 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 810 transitions. Word has length 93 [2021-11-13 02:39:03,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:03,551 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 810 transitions. [2021-11-13 02:39:03,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:03,552 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 810 transitions. [2021-11-13 02:39:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:39:03,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:03,554 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] [2021-11-13 02:39:03,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 02:39:03,555 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:03,556 INFO L85 PathProgramCache]: Analyzing trace with hash 426483258, now seen corresponding path program 1 times [2021-11-13 02:39:03,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:03,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702820847] [2021-11-13 02:39:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:03,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:03,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:03,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702820847] [2021-11-13 02:39:03,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702820847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:03,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:03,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:03,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770124763] [2021-11-13 02:39:03,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:03,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:03,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:03,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:03,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:03,692 INFO L87 Difference]: Start difference. First operand 622 states and 810 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:05,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:05,081 INFO L93 Difference]: Finished difference Result 1120 states and 1452 transitions. [2021-11-13 02:39:05,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:05,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-13 02:39:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:05,086 INFO L225 Difference]: With dead ends: 1120 [2021-11-13 02:39:05,086 INFO L226 Difference]: Without dead ends: 1045 [2021-11-13 02:39:05,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:05,088 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 3285 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 859.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.72ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1074.76ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:05,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3285 Valid, 2049 Invalid, 1813 Unknown, 0 Unchecked, 10.72ms Time], IncrementalHoareTripleChecker [56 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 1074.76ms Time] [2021-11-13 02:39:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-11-13 02:39:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 622. [2021-11-13 02:39:05,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.3483333333333334) internal successors, (809), 621 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:05,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 809 transitions. [2021-11-13 02:39:05,161 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 809 transitions. Word has length 93 [2021-11-13 02:39:05,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:05,161 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 809 transitions. [2021-11-13 02:39:05,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:05,162 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 809 transitions. [2021-11-13 02:39:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:39:05,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:05,164 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] [2021-11-13 02:39:05,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 02:39:05,164 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:05,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:05,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1453025680, now seen corresponding path program 1 times [2021-11-13 02:39:05,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:05,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64187142] [2021-11-13 02:39:05,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:05,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:05,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:05,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64187142] [2021-11-13 02:39:05,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64187142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:05,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:05,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:05,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442678151] [2021-11-13 02:39:05,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:05,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:05,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:05,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:05,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:05,304 INFO L87 Difference]: Start difference. First operand 622 states and 809 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:06,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:06,692 INFO L93 Difference]: Finished difference Result 1129 states and 1458 transitions. [2021-11-13 02:39:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:06,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-13 02:39:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:06,697 INFO L225 Difference]: With dead ends: 1129 [2021-11-13 02:39:06,697 INFO L226 Difference]: Without dead ends: 1045 [2021-11-13 02:39:06,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:06,699 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 3368 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 861.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3368 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.65ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1087.40ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:06,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3368 Valid, 2037 Invalid, 1812 Unknown, 0 Unchecked, 10.65ms Time], IncrementalHoareTripleChecker [56 Valid, 1756 Invalid, 0 Unknown, 0 Unchecked, 1087.40ms Time] [2021-11-13 02:39:06,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-11-13 02:39:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 622. [2021-11-13 02:39:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.3466666666666667) internal successors, (808), 621 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 808 transitions. [2021-11-13 02:39:06,769 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 808 transitions. Word has length 93 [2021-11-13 02:39:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:06,770 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 808 transitions. [2021-11-13 02:39:06,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 808 transitions. [2021-11-13 02:39:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:39:06,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:06,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:06,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 02:39:06,774 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:06,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1861870908, now seen corresponding path program 1 times [2021-11-13 02:39:06,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:06,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58533391] [2021-11-13 02:39:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:06,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:06,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:06,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58533391] [2021-11-13 02:39:06,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58533391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:06,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:06,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:06,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831936235] [2021-11-13 02:39:06,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:06,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:06,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:06,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:06,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:06,923 INFO L87 Difference]: Start difference. First operand 622 states and 808 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:08,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:08,357 INFO L93 Difference]: Finished difference Result 1083 states and 1394 transitions. [2021-11-13 02:39:08,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:08,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-13 02:39:08,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:08,363 INFO L225 Difference]: With dead ends: 1083 [2021-11-13 02:39:08,363 INFO L226 Difference]: Without dead ends: 1021 [2021-11-13 02:39:08,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:08,365 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1981 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 915.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.22ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1125.36ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:08,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1981 Valid, 2324 Invalid, 2039 Unknown, 0 Unchecked, 10.22ms Time], IncrementalHoareTripleChecker [61 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 1125.36ms Time] [2021-11-13 02:39:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2021-11-13 02:39:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 622. [2021-11-13 02:39:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.345) internal successors, (807), 621 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 807 transitions. [2021-11-13 02:39:08,483 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 807 transitions. Word has length 93 [2021-11-13 02:39:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:08,483 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 807 transitions. [2021-11-13 02:39:08,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 807 transitions. [2021-11-13 02:39:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:39:08,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:08,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:08,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 02:39:08,488 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1321108389, now seen corresponding path program 1 times [2021-11-13 02:39:08,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:08,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552301742] [2021-11-13 02:39:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:08,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:08,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:08,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552301742] [2021-11-13 02:39:08,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552301742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:08,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:08,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:08,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100046645] [2021-11-13 02:39:08,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:08,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:08,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:08,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:08,636 INFO L87 Difference]: Start difference. First operand 622 states and 807 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:09,786 INFO L93 Difference]: Finished difference Result 1129 states and 1456 transitions. [2021-11-13 02:39:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:09,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-13 02:39:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:09,792 INFO L225 Difference]: With dead ends: 1129 [2021-11-13 02:39:09,792 INFO L226 Difference]: Without dead ends: 1045 [2021-11-13 02:39:09,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:09,793 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 3571 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 710.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3571 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.09ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 877.86ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:09,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3571 Valid, 1921 Invalid, 1634 Unknown, 0 Unchecked, 9.09ms Time], IncrementalHoareTripleChecker [60 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 877.86ms Time] [2021-11-13 02:39:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-11-13 02:39:09,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 622. [2021-11-13 02:39:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.3433333333333333) internal successors, (806), 621 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 806 transitions. [2021-11-13 02:39:09,883 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 806 transitions. Word has length 93 [2021-11-13 02:39:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:09,884 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 806 transitions. [2021-11-13 02:39:09,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 806 transitions. [2021-11-13 02:39:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:39:09,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:09,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:09,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 02:39:09,888 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:09,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash 912263161, now seen corresponding path program 1 times [2021-11-13 02:39:09,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:09,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257794280] [2021-11-13 02:39:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:09,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:10,032 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:10,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257794280] [2021-11-13 02:39:10,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257794280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:10,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:10,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:10,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612014175] [2021-11-13 02:39:10,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:10,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:10,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:10,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:10,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:10,035 INFO L87 Difference]: Start difference. First operand 622 states and 806 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:11,621 INFO L93 Difference]: Finished difference Result 1083 states and 1393 transitions. [2021-11-13 02:39:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:11,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-13 02:39:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:11,630 INFO L225 Difference]: With dead ends: 1083 [2021-11-13 02:39:11,631 INFO L226 Difference]: Without dead ends: 1021 [2021-11-13 02:39:11,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:11,635 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 2833 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 984.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2833 SdHoareTripleChecker+Valid, 2426 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.32ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1240.80ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:11,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2833 Valid, 2426 Invalid, 2122 Unknown, 0 Unchecked, 11.32ms Time], IncrementalHoareTripleChecker [90 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 1240.80ms Time] [2021-11-13 02:39:11,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2021-11-13 02:39:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 614. [2021-11-13 02:39:11,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 592 states have (on average 1.3429054054054055) internal successors, (795), 613 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 795 transitions. [2021-11-13 02:39:11,721 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 795 transitions. Word has length 93 [2021-11-13 02:39:11,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:11,721 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 795 transitions. [2021-11-13 02:39:11,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:11,722 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 795 transitions. [2021-11-13 02:39:11,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:39:11,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:11,725 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] [2021-11-13 02:39:11,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 02:39:11,725 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:11,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1094349969, now seen corresponding path program 1 times [2021-11-13 02:39:11,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:11,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525605571] [2021-11-13 02:39:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:11,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:11,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:11,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525605571] [2021-11-13 02:39:11,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525605571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:11,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:11,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:11,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422959558] [2021-11-13 02:39:11,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:11,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:11,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:11,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:11,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:11,869 INFO L87 Difference]: Start difference. First operand 614 states and 795 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:13,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:13,230 INFO L93 Difference]: Finished difference Result 1104 states and 1424 transitions. [2021-11-13 02:39:13,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:13,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-13 02:39:13,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:13,236 INFO L225 Difference]: With dead ends: 1104 [2021-11-13 02:39:13,237 INFO L226 Difference]: Without dead ends: 1029 [2021-11-13 02:39:13,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:13,238 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 2137 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 845.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.34ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1042.02ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:13,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2137 Valid, 2052 Invalid, 1771 Unknown, 0 Unchecked, 9.34ms Time], IncrementalHoareTripleChecker [37 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1042.02ms Time] [2021-11-13 02:39:13,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-11-13 02:39:13,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 607. [2021-11-13 02:39:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.34017094017094) internal successors, (784), 606 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 784 transitions. [2021-11-13 02:39:13,310 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 784 transitions. Word has length 93 [2021-11-13 02:39:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:13,311 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 784 transitions. [2021-11-13 02:39:13,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:13,311 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 784 transitions. [2021-11-13 02:39:13,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:39:13,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:13,312 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] [2021-11-13 02:39:13,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 02:39:13,313 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:13,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:13,313 INFO L85 PathProgramCache]: Analyzing trace with hash -742152744, now seen corresponding path program 1 times [2021-11-13 02:39:13,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:13,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743639975] [2021-11-13 02:39:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:13,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:13,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:13,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743639975] [2021-11-13 02:39:13,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743639975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:13,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:13,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:13,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449064295] [2021-11-13 02:39:13,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:13,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:13,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:13,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:13,456 INFO L87 Difference]: Start difference. First operand 607 states and 784 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:14,955 INFO L93 Difference]: Finished difference Result 1064 states and 1367 transitions. [2021-11-13 02:39:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:14,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-13 02:39:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:14,962 INFO L225 Difference]: With dead ends: 1064 [2021-11-13 02:39:14,962 INFO L226 Difference]: Without dead ends: 1006 [2021-11-13 02:39:14,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:14,963 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 2782 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 923.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2782 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.02ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1150.55ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:14,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2782 Valid, 2482 Invalid, 2170 Unknown, 0 Unchecked, 11.02ms Time], IncrementalHoareTripleChecker [88 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 1150.55ms Time] [2021-11-13 02:39:14,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-13 02:39:15,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 607. [2021-11-13 02:39:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3384615384615384) internal successors, (783), 606 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 783 transitions. [2021-11-13 02:39:15,050 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 783 transitions. Word has length 93 [2021-11-13 02:39:15,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:15,051 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 783 transitions. [2021-11-13 02:39:15,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 783 transitions. [2021-11-13 02:39:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:39:15,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:15,053 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] [2021-11-13 02:39:15,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-13 02:39:15,054 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:15,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1378246964, now seen corresponding path program 1 times [2021-11-13 02:39:15,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:15,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313025517] [2021-11-13 02:39:15,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:15,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:15,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:15,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313025517] [2021-11-13 02:39:15,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313025517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:15,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:15,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:15,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88558671] [2021-11-13 02:39:15,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:15,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:15,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:15,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:15,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:15,207 INFO L87 Difference]: Start difference. First operand 607 states and 783 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:16,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:16,594 INFO L93 Difference]: Finished difference Result 1068 states and 1369 transitions. [2021-11-13 02:39:16,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:16,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-13 02:39:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:16,598 INFO L225 Difference]: With dead ends: 1068 [2021-11-13 02:39:16,598 INFO L226 Difference]: Without dead ends: 1006 [2021-11-13 02:39:16,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:16,600 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 1852 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 869.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 2547 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.50ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1072.86ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:16,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 2547 Invalid, 2199 Unknown, 0 Unchecked, 9.50ms Time], IncrementalHoareTripleChecker [57 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 1072.86ms Time] [2021-11-13 02:39:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-13 02:39:16,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 607. [2021-11-13 02:39:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3367521367521367) internal successors, (782), 606 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 782 transitions. [2021-11-13 02:39:16,709 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 782 transitions. Word has length 93 [2021-11-13 02:39:16,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:16,710 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 782 transitions. [2021-11-13 02:39:16,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:16,710 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 782 transitions. [2021-11-13 02:39:16,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:39:16,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:16,712 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] [2021-11-13 02:39:16,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-13 02:39:16,712 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:16,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:16,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1210703433, now seen corresponding path program 1 times [2021-11-13 02:39:16,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:16,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689878896] [2021-11-13 02:39:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:16,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:16,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:16,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689878896] [2021-11-13 02:39:16,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689878896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:16,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:16,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:16,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461518846] [2021-11-13 02:39:16,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:16,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:16,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:16,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:16,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:16,848 INFO L87 Difference]: Start difference. First operand 607 states and 782 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:18,113 INFO L93 Difference]: Finished difference Result 1092 states and 1404 transitions. [2021-11-13 02:39:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:18,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-13 02:39:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:18,117 INFO L225 Difference]: With dead ends: 1092 [2021-11-13 02:39:18,118 INFO L226 Difference]: Without dead ends: 1022 [2021-11-13 02:39:18,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:18,119 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 3237 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 767.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3237 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.90ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 942.22ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:18,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3237 Valid, 2056 Invalid, 1781 Unknown, 0 Unchecked, 9.90ms Time], IncrementalHoareTripleChecker [56 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 942.22ms Time] [2021-11-13 02:39:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-11-13 02:39:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 607. [2021-11-13 02:39:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.335042735042735) internal successors, (781), 606 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:18,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 781 transitions. [2021-11-13 02:39:18,179 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 781 transitions. Word has length 93 [2021-11-13 02:39:18,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:18,180 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 781 transitions. [2021-11-13 02:39:18,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 781 transitions. [2021-11-13 02:39:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 02:39:18,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:18,182 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] [2021-11-13 02:39:18,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-13 02:39:18,182 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:18,183 INFO L85 PathProgramCache]: Analyzing trace with hash -259350772, now seen corresponding path program 1 times [2021-11-13 02:39:18,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:18,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381949945] [2021-11-13 02:39:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:18,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:18,334 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:18,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381949945] [2021-11-13 02:39:18,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381949945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:18,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:18,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:18,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404754985] [2021-11-13 02:39:18,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:18,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:18,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:18,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:18,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:18,337 INFO L87 Difference]: Start difference. First operand 607 states and 781 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:20,181 INFO L93 Difference]: Finished difference Result 1198 states and 1549 transitions. [2021-11-13 02:39:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:39:20,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-13 02:39:20,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:20,186 INFO L225 Difference]: With dead ends: 1198 [2021-11-13 02:39:20,186 INFO L226 Difference]: Without dead ends: 1034 [2021-11-13 02:39:20,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:39:20,188 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 2924 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1156.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2924 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 2490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.80ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1423.54ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:20,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2924 Valid, 3468 Invalid, 2490 Unknown, 0 Unchecked, 17.80ms Time], IncrementalHoareTripleChecker [16 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 1423.54ms Time] [2021-11-13 02:39:20,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-11-13 02:39:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 607. [2021-11-13 02:39:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3333333333333333) internal successors, (780), 606 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 780 transitions. [2021-11-13 02:39:20,277 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 780 transitions. Word has length 93 [2021-11-13 02:39:20,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:20,277 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 780 transitions. [2021-11-13 02:39:20,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-13 02:39:20,278 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 780 transitions. [2021-11-13 02:39:20,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:20,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:20,279 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] [2021-11-13 02:39:20,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-13 02:39:20,280 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:20,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash 428439914, now seen corresponding path program 1 times [2021-11-13 02:39:20,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:20,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147925226] [2021-11-13 02:39:20,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:20,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:20,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:20,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147925226] [2021-11-13 02:39:20,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147925226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:20,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:20,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:20,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246872248] [2021-11-13 02:39:20,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:20,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:20,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:20,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:20,418 INFO L87 Difference]: Start difference. First operand 607 states and 780 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:22,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:22,040 INFO L93 Difference]: Finished difference Result 1068 states and 1366 transitions. [2021-11-13 02:39:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:22,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:22,045 INFO L225 Difference]: With dead ends: 1068 [2021-11-13 02:39:22,045 INFO L226 Difference]: Without dead ends: 1006 [2021-11-13 02:39:22,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:22,047 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 2686 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1038.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2686 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.44ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1265.04ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:22,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2686 Valid, 2562 Invalid, 2206 Unknown, 0 Unchecked, 11.44ms Time], IncrementalHoareTripleChecker [86 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 1265.04ms Time] [2021-11-13 02:39:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-13 02:39:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 607. [2021-11-13 02:39:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3316239316239316) internal successors, (779), 606 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 779 transitions. [2021-11-13 02:39:22,146 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 779 transitions. Word has length 95 [2021-11-13 02:39:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:22,146 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 779 transitions. [2021-11-13 02:39:22,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 779 transitions. [2021-11-13 02:39:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:22,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:22,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:22,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-13 02:39:22,148 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:22,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash -403449268, now seen corresponding path program 1 times [2021-11-13 02:39:22,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:22,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284654978] [2021-11-13 02:39:22,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:22,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:22,278 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:22,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284654978] [2021-11-13 02:39:22,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284654978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:22,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:22,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:22,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631030465] [2021-11-13 02:39:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:22,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:22,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:22,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:22,281 INFO L87 Difference]: Start difference. First operand 607 states and 779 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:23,537 INFO L93 Difference]: Finished difference Result 1112 states and 1419 transitions. [2021-11-13 02:39:23,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:23,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:23,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:23,543 INFO L225 Difference]: With dead ends: 1112 [2021-11-13 02:39:23,543 INFO L226 Difference]: Without dead ends: 1022 [2021-11-13 02:39:23,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:23,544 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 3551 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 729.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3551 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.11ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 915.27ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:23,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3551 Valid, 1933 Invalid, 1605 Unknown, 0 Unchecked, 9.11ms Time], IncrementalHoareTripleChecker [60 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 915.27ms Time] [2021-11-13 02:39:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-11-13 02:39:23,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 607. [2021-11-13 02:39:23,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3299145299145299) internal successors, (778), 606 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 778 transitions. [2021-11-13 02:39:23,633 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 778 transitions. Word has length 95 [2021-11-13 02:39:23,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:23,633 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 778 transitions. [2021-11-13 02:39:23,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 778 transitions. [2021-11-13 02:39:23,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:23,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:23,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:23,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-13 02:39:23,635 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:23,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:23,636 INFO L85 PathProgramCache]: Analyzing trace with hash 13593460, now seen corresponding path program 1 times [2021-11-13 02:39:23,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:23,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937205480] [2021-11-13 02:39:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:23,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:23,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:23,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937205480] [2021-11-13 02:39:23,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937205480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:23,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:23,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 02:39:23,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636021913] [2021-11-13 02:39:23,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:23,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:39:23,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:23,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:39:23,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:39:23,876 INFO L87 Difference]: Start difference. First operand 607 states and 778 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:27,028 INFO L93 Difference]: Finished difference Result 1563 states and 2008 transitions. [2021-11-13 02:39:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 02:39:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:27,036 INFO L225 Difference]: With dead ends: 1563 [2021-11-13 02:39:27,037 INFO L226 Difference]: Without dead ends: 1434 [2021-11-13 02:39:27,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-13 02:39:27,039 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 4867 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1670.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4867 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 3382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.48ms SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2046.80ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:27,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4867 Valid, 3296 Invalid, 3382 Unknown, 0 Unchecked, 20.48ms Time], IncrementalHoareTripleChecker [470 Valid, 2912 Invalid, 0 Unknown, 0 Unchecked, 2046.80ms Time] [2021-11-13 02:39:27,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-11-13 02:39:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 611. [2021-11-13 02:39:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 589 states have (on average 1.3276740237691003) internal successors, (782), 610 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 782 transitions. [2021-11-13 02:39:27,121 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 782 transitions. Word has length 95 [2021-11-13 02:39:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:27,121 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 782 transitions. [2021-11-13 02:39:27,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 782 transitions. [2021-11-13 02:39:27,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:27,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:27,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:27,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-13 02:39:27,123 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:27,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:27,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1322444417, now seen corresponding path program 1 times [2021-11-13 02:39:27,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:27,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514861929] [2021-11-13 02:39:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:27,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:27,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:27,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514861929] [2021-11-13 02:39:27,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514861929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:27,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:27,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:27,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430700533] [2021-11-13 02:39:27,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:27,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:27,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:27,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:27,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:27,258 INFO L87 Difference]: Start difference. First operand 611 states and 782 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:28,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:28,908 INFO L93 Difference]: Finished difference Result 1072 states and 1367 transitions. [2021-11-13 02:39:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:28,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:28,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:28,914 INFO L225 Difference]: With dead ends: 1072 [2021-11-13 02:39:28,914 INFO L226 Difference]: Without dead ends: 1010 [2021-11-13 02:39:28,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:28,916 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 2539 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1004.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.65ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1242.70ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:28,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2539 Valid, 2735 Invalid, 2320 Unknown, 0 Unchecked, 14.65ms Time], IncrementalHoareTripleChecker [82 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1242.70ms Time] [2021-11-13 02:39:28,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2021-11-13 02:39:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2021-11-13 02:39:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 589 states have (on average 1.3259762308998302) internal successors, (781), 610 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 781 transitions. [2021-11-13 02:39:29,005 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 781 transitions. Word has length 95 [2021-11-13 02:39:29,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:29,005 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 781 transitions. [2021-11-13 02:39:29,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:29,006 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 781 transitions. [2021-11-13 02:39:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:29,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:29,007 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] [2021-11-13 02:39:29,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-13 02:39:29,007 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:29,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:29,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1959236716, now seen corresponding path program 1 times [2021-11-13 02:39:29,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:29,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711750917] [2021-11-13 02:39:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:29,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:29,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:29,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711750917] [2021-11-13 02:39:29,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711750917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:29,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:29,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:29,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504132035] [2021-11-13 02:39:29,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:29,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:29,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:29,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:29,137 INFO L87 Difference]: Start difference. First operand 611 states and 781 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:30,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:30,738 INFO L93 Difference]: Finished difference Result 1068 states and 1362 transitions. [2021-11-13 02:39:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:30,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:30,743 INFO L225 Difference]: With dead ends: 1068 [2021-11-13 02:39:30,743 INFO L226 Difference]: Without dead ends: 1010 [2021-11-13 02:39:30,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:30,744 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 2579 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 968.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.36ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1191.71ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:30,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2579 Valid, 2690 Invalid, 2252 Unknown, 0 Unchecked, 11.36ms Time], IncrementalHoareTripleChecker [84 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 1191.71ms Time] [2021-11-13 02:39:30,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2021-11-13 02:39:30,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 611. [2021-11-13 02:39:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 589 states have (on average 1.3242784380305603) internal successors, (780), 610 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 780 transitions. [2021-11-13 02:39:30,842 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 780 transitions. Word has length 95 [2021-11-13 02:39:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:30,842 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 780 transitions. [2021-11-13 02:39:30,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 780 transitions. [2021-11-13 02:39:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:30,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:30,844 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] [2021-11-13 02:39:30,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-13 02:39:30,844 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:30,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash 214610871, now seen corresponding path program 1 times [2021-11-13 02:39:30,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:30,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656466936] [2021-11-13 02:39:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:30,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:30,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:30,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656466936] [2021-11-13 02:39:30,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656466936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:30,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:30,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:30,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964697592] [2021-11-13 02:39:30,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:30,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:30,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:30,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:30,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:30,997 INFO L87 Difference]: Start difference. First operand 611 states and 780 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:32,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:32,601 INFO L93 Difference]: Finished difference Result 1139 states and 1458 transitions. [2021-11-13 02:39:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:39:32,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:32,604 INFO L225 Difference]: With dead ends: 1139 [2021-11-13 02:39:32,604 INFO L226 Difference]: Without dead ends: 1025 [2021-11-13 02:39:32,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:39:32,606 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 2578 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1010.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2578 SdHoareTripleChecker+Valid, 3306 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.42ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1235.87ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:32,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2578 Valid, 3306 Invalid, 2462 Unknown, 0 Unchecked, 10.42ms Time], IncrementalHoareTripleChecker [23 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 1235.87ms Time] [2021-11-13 02:39:32,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2021-11-13 02:39:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 611. [2021-11-13 02:39:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 589 states have (on average 1.3225806451612903) internal successors, (779), 610 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 779 transitions. [2021-11-13 02:39:32,691 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 779 transitions. Word has length 95 [2021-11-13 02:39:32,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:32,691 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 779 transitions. [2021-11-13 02:39:32,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:32,691 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 779 transitions. [2021-11-13 02:39:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:32,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:32,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:32,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-13 02:39:32,692 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:32,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:32,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1017224148, now seen corresponding path program 1 times [2021-11-13 02:39:32,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:32,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551871935] [2021-11-13 02:39:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:32,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:32,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:32,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551871935] [2021-11-13 02:39:32,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551871935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:32,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:32,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 02:39:32,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363622887] [2021-11-13 02:39:32,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:32,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:39:32,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:32,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:39:32,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:39:32,891 INFO L87 Difference]: Start difference. First operand 611 states and 779 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:35,934 INFO L93 Difference]: Finished difference Result 1533 states and 1976 transitions. [2021-11-13 02:39:35,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 02:39:35,935 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:35,937 INFO L225 Difference]: With dead ends: 1533 [2021-11-13 02:39:35,937 INFO L226 Difference]: Without dead ends: 1419 [2021-11-13 02:39:35,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-13 02:39:35,939 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 5469 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 3105 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1616.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5469 SdHoareTripleChecker+Valid, 3602 SdHoareTripleChecker+Invalid, 3618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.45ms SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 3105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1960.90ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:35,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5469 Valid, 3602 Invalid, 3618 Unknown, 0 Unchecked, 18.45ms Time], IncrementalHoareTripleChecker [513 Valid, 3105 Invalid, 0 Unknown, 0 Unchecked, 1960.90ms Time] [2021-11-13 02:39:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-11-13 02:39:36,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 615. [2021-11-13 02:39:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 593 states have (on average 1.3204047217537942) internal successors, (783), 614 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 783 transitions. [2021-11-13 02:39:36,065 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 783 transitions. Word has length 95 [2021-11-13 02:39:36,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:36,066 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 783 transitions. [2021-11-13 02:39:36,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:36,066 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 783 transitions. [2021-11-13 02:39:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:36,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:36,067 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] [2021-11-13 02:39:36,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-13 02:39:36,067 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:36,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:36,068 INFO L85 PathProgramCache]: Analyzing trace with hash 90609398, now seen corresponding path program 1 times [2021-11-13 02:39:36,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:36,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182368757] [2021-11-13 02:39:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:36,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:36,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:36,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182368757] [2021-11-13 02:39:36,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182368757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:36,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:36,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:36,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489846034] [2021-11-13 02:39:36,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:36,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:36,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:36,198 INFO L87 Difference]: Start difference. First operand 615 states and 783 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:37,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:37,915 INFO L93 Difference]: Finished difference Result 1076 states and 1368 transitions. [2021-11-13 02:39:37,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:37,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:37,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:37,917 INFO L225 Difference]: With dead ends: 1076 [2021-11-13 02:39:37,917 INFO L226 Difference]: Without dead ends: 1014 [2021-11-13 02:39:37,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:37,918 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 1752 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1027.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.10ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1265.79ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:37,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1752 Valid, 2731 Invalid, 2278 Unknown, 0 Unchecked, 11.10ms Time], IncrementalHoareTripleChecker [55 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 1265.79ms Time] [2021-11-13 02:39:37,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-13 02:39:38,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 615. [2021-11-13 02:39:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 593 states have (on average 1.3187183811129848) internal successors, (782), 614 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 782 transitions. [2021-11-13 02:39:38,019 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 782 transitions. Word has length 95 [2021-11-13 02:39:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:38,019 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 782 transitions. [2021-11-13 02:39:38,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:38,019 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 782 transitions. [2021-11-13 02:39:38,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:38,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:38,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:38,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-13 02:39:38,021 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:38,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:38,022 INFO L85 PathProgramCache]: Analyzing trace with hash 726921085, now seen corresponding path program 1 times [2021-11-13 02:39:38,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:38,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321321227] [2021-11-13 02:39:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:38,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:38,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:38,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321321227] [2021-11-13 02:39:38,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321321227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:38,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:38,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:38,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91779325] [2021-11-13 02:39:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:38,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:38,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:38,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:38,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:38,176 INFO L87 Difference]: Start difference. First operand 615 states and 782 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:39,785 INFO L93 Difference]: Finished difference Result 1072 states and 1362 transitions. [2021-11-13 02:39:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:39,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:39,788 INFO L225 Difference]: With dead ends: 1072 [2021-11-13 02:39:39,789 INFO L226 Difference]: Without dead ends: 1014 [2021-11-13 02:39:39,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:39,790 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1783 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 944.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.08ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1164.02ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:39,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1783 Valid, 2695 Invalid, 2212 Unknown, 0 Unchecked, 10.08ms Time], IncrementalHoareTripleChecker [57 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 1164.02ms Time] [2021-11-13 02:39:39,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-13 02:39:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 615. [2021-11-13 02:39:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 593 states have (on average 1.3170320404721754) internal successors, (781), 614 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 781 transitions. [2021-11-13 02:39:39,907 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 781 transitions. Word has length 95 [2021-11-13 02:39:39,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:39,908 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 781 transitions. [2021-11-13 02:39:39,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 781 transitions. [2021-11-13 02:39:39,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:39,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:39,909 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] [2021-11-13 02:39:39,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-13 02:39:39,910 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:39,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1422295698, now seen corresponding path program 1 times [2021-11-13 02:39:39,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:39,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587148214] [2021-11-13 02:39:39,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:39,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:40,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:40,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587148214] [2021-11-13 02:39:40,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587148214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:40,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:40,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:40,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258773320] [2021-11-13 02:39:40,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:40,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:40,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:40,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:40,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:40,048 INFO L87 Difference]: Start difference. First operand 615 states and 781 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:41,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:41,555 INFO L93 Difference]: Finished difference Result 1125 states and 1440 transitions. [2021-11-13 02:39:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:39:41,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:41,558 INFO L225 Difference]: With dead ends: 1125 [2021-11-13 02:39:41,558 INFO L226 Difference]: Without dead ends: 1025 [2021-11-13 02:39:41,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:39:41,559 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 2741 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 902.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2741 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.59ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1118.91ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:41,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2741 Valid, 2845 Invalid, 2098 Unknown, 0 Unchecked, 9.59ms Time], IncrementalHoareTripleChecker [25 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 1118.91ms Time] [2021-11-13 02:39:41,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2021-11-13 02:39:41,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 615. [2021-11-13 02:39:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 593 states have (on average 1.315345699831366) internal successors, (780), 614 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 780 transitions. [2021-11-13 02:39:41,658 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 780 transitions. Word has length 95 [2021-11-13 02:39:41,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:41,658 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 780 transitions. [2021-11-13 02:39:41,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 780 transitions. [2021-11-13 02:39:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:41,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:41,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:41,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-13 02:39:41,661 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:41,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:41,661 INFO L85 PathProgramCache]: Analyzing trace with hash -532293800, now seen corresponding path program 1 times [2021-11-13 02:39:41,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:41,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525373416] [2021-11-13 02:39:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:41,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:41,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:41,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525373416] [2021-11-13 02:39:41,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525373416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:41,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:41,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:41,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841852667] [2021-11-13 02:39:41,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:41,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:41,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:41,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:41,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:41,792 INFO L87 Difference]: Start difference. First operand 615 states and 780 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:43,429 INFO L93 Difference]: Finished difference Result 1072 states and 1360 transitions. [2021-11-13 02:39:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:43,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:43,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:43,433 INFO L225 Difference]: With dead ends: 1072 [2021-11-13 02:39:43,433 INFO L226 Difference]: Without dead ends: 1014 [2021-11-13 02:39:43,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:43,435 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 2534 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 978.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.29ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1199.29ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:43,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2534 Valid, 2731 Invalid, 2291 Unknown, 0 Unchecked, 11.29ms Time], IncrementalHoareTripleChecker [82 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 1199.29ms Time] [2021-11-13 02:39:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-13 02:39:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 615. [2021-11-13 02:39:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 593 states have (on average 1.3136593591905565) internal successors, (779), 614 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 779 transitions. [2021-11-13 02:39:43,541 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 779 transitions. Word has length 95 [2021-11-13 02:39:43,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:43,541 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 779 transitions. [2021-11-13 02:39:43,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 779 transitions. [2021-11-13 02:39:43,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:43,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:43,543 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] [2021-11-13 02:39:43,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-13 02:39:43,543 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:43,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:43,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1192103022, now seen corresponding path program 1 times [2021-11-13 02:39:43,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:43,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65099968] [2021-11-13 02:39:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:43,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:43,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:43,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65099968] [2021-11-13 02:39:43,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65099968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:43,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:43,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:43,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612768061] [2021-11-13 02:39:43,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:43,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:43,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:43,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:43,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:43,672 INFO L87 Difference]: Start difference. First operand 615 states and 779 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:45,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:45,113 INFO L93 Difference]: Finished difference Result 1071 states and 1357 transitions. [2021-11-13 02:39:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:45,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 02:39:45,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:45,115 INFO L225 Difference]: With dead ends: 1071 [2021-11-13 02:39:45,115 INFO L226 Difference]: Without dead ends: 1014 [2021-11-13 02:39:45,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:45,116 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 2581 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 844.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.85ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1035.65ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:45,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2581 Valid, 2671 Invalid, 2218 Unknown, 0 Unchecked, 9.85ms Time], IncrementalHoareTripleChecker [84 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 1035.65ms Time] [2021-11-13 02:39:45,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-13 02:39:45,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 615. [2021-11-13 02:39:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 593 states have (on average 1.3119730185497471) internal successors, (778), 614 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:45,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 778 transitions. [2021-11-13 02:39:45,198 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 778 transitions. Word has length 95 [2021-11-13 02:39:45,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:45,198 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 778 transitions. [2021-11-13 02:39:45,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:45,198 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 778 transitions. [2021-11-13 02:39:45,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 02:39:45,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:45,199 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] [2021-11-13 02:39:45,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-13 02:39:45,199 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:45,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:45,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1698794185, now seen corresponding path program 1 times [2021-11-13 02:39:45,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:45,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048130499] [2021-11-13 02:39:45,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:45,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:45,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:45,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048130499] [2021-11-13 02:39:45,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048130499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:45,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:45,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:45,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665454380] [2021-11-13 02:39:45,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:45,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:45,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:45,308 INFO L87 Difference]: Start difference. First operand 615 states and 778 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 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) [2021-11-13 02:39:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:46,562 INFO L93 Difference]: Finished difference Result 1154 states and 1466 transitions. [2021-11-13 02:39:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:46,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 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 [2021-11-13 02:39:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:46,563 INFO L225 Difference]: With dead ends: 1154 [2021-11-13 02:39:46,563 INFO L226 Difference]: Without dead ends: 1025 [2021-11-13 02:39:46,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:46,564 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1945 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 727.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.58ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 906.93ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:46,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1945 Valid, 2542 Invalid, 2062 Unknown, 0 Unchecked, 7.58ms Time], IncrementalHoareTripleChecker [21 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 906.93ms Time] [2021-11-13 02:39:46,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2021-11-13 02:39:46,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 611. [2021-11-13 02:39:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 589 states have (on average 1.3123938879456707) internal successors, (773), 610 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 773 transitions. [2021-11-13 02:39:46,652 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 773 transitions. Word has length 96 [2021-11-13 02:39:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:46,652 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 773 transitions. [2021-11-13 02:39:46,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 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) [2021-11-13 02:39:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 773 transitions. [2021-11-13 02:39:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 02:39:46,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:46,654 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] [2021-11-13 02:39:46,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-13 02:39:46,654 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:46,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1396690139, now seen corresponding path program 1 times [2021-11-13 02:39:46,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:46,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858330512] [2021-11-13 02:39:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:46,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:46,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:46,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858330512] [2021-11-13 02:39:46,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858330512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:46,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:46,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:46,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847182732] [2021-11-13 02:39:46,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:46,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:46,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:46,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:46,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:46,752 INFO L87 Difference]: Start difference. First operand 611 states and 773 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 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) [2021-11-13 02:39:48,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:48,067 INFO L93 Difference]: Finished difference Result 1139 states and 1451 transitions. [2021-11-13 02:39:48,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:48,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 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 [2021-11-13 02:39:48,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:48,069 INFO L225 Difference]: With dead ends: 1139 [2021-11-13 02:39:48,069 INFO L226 Difference]: Without dead ends: 1025 [2021-11-13 02:39:48,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:48,070 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 2606 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 765.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2606 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.74ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 946.16ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:48,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2606 Valid, 2798 Invalid, 2222 Unknown, 0 Unchecked, 8.74ms Time], IncrementalHoareTripleChecker [29 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 946.16ms Time] [2021-11-13 02:39:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2021-11-13 02:39:48,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 607. [2021-11-13 02:39:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3128205128205128) internal successors, (768), 606 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 768 transitions. [2021-11-13 02:39:48,176 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 768 transitions. Word has length 96 [2021-11-13 02:39:48,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:48,177 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 768 transitions. [2021-11-13 02:39:48,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 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) [2021-11-13 02:39:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 768 transitions. [2021-11-13 02:39:48,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 02:39:48,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:48,178 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] [2021-11-13 02:39:48,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-13 02:39:48,178 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:48,179 INFO L85 PathProgramCache]: Analyzing trace with hash 512837716, now seen corresponding path program 1 times [2021-11-13 02:39:48,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:48,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711141805] [2021-11-13 02:39:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:48,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:48,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:48,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711141805] [2021-11-13 02:39:48,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711141805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:48,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:48,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 02:39:48,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061208226] [2021-11-13 02:39:48,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:48,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:39:48,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:48,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:39:48,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:39:48,480 INFO L87 Difference]: Start difference. First operand 607 states and 768 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 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) [2021-11-13 02:39:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:50,130 INFO L93 Difference]: Finished difference Result 1358 states and 1668 transitions. [2021-11-13 02:39:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:39:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 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 [2021-11-13 02:39:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:50,132 INFO L225 Difference]: With dead ends: 1358 [2021-11-13 02:39:50,132 INFO L226 Difference]: Without dead ends: 1096 [2021-11-13 02:39:50,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:39:50,133 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 3443 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 529.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3443 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.10ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 636.07ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:50,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3443 Valid, 3513 Invalid, 929 Unknown, 0 Unchecked, 16.10ms Time], IncrementalHoareTripleChecker [111 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 636.07ms Time] [2021-11-13 02:39:50,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-11-13 02:39:50,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 395. [2021-11-13 02:39:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2770448548812665) internal successors, (484), 394 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 484 transitions. [2021-11-13 02:39:50,209 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 484 transitions. Word has length 96 [2021-11-13 02:39:50,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:50,209 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 484 transitions. [2021-11-13 02:39:50,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 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) [2021-11-13 02:39:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 484 transitions. [2021-11-13 02:39:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:39:50,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:50,210 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] [2021-11-13 02:39:50,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-13 02:39:50,210 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:50,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2114920515, now seen corresponding path program 1 times [2021-11-13 02:39:50,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:50,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924811925] [2021-11-13 02:39:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:50,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:50,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:50,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924811925] [2021-11-13 02:39:50,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924811925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:50,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:50,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:50,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239056404] [2021-11-13 02:39:50,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:50,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:50,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:50,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:50,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:50,323 INFO L87 Difference]: Start difference. First operand 395 states and 484 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:51,267 INFO L93 Difference]: Finished difference Result 725 states and 891 transitions. [2021-11-13 02:39:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:39:51,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:39:51,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:51,268 INFO L225 Difference]: With dead ends: 725 [2021-11-13 02:39:51,268 INFO L226 Difference]: Without dead ends: 670 [2021-11-13 02:39:51,268 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 [2021-11-13 02:39:51,269 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1582 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 518.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 634.78ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:51,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 1727 Invalid, 1433 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [66 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 634.78ms Time] [2021-11-13 02:39:51,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-13 02:39:51,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 395. [2021-11-13 02:39:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.274406332453826) internal successors, (483), 394 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 483 transitions. [2021-11-13 02:39:51,340 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 483 transitions. Word has length 97 [2021-11-13 02:39:51,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:51,341 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 483 transitions. [2021-11-13 02:39:51,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:51,341 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 483 transitions. [2021-11-13 02:39:51,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:39:51,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:51,342 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] [2021-11-13 02:39:51,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-13 02:39:51,343 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:51,343 INFO L85 PathProgramCache]: Analyzing trace with hash -202723413, now seen corresponding path program 1 times [2021-11-13 02:39:51,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:51,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52988691] [2021-11-13 02:39:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:51,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:51,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:51,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52988691] [2021-11-13 02:39:51,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52988691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:51,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:51,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:51,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704265877] [2021-11-13 02:39:51,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:51,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:51,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:51,442 INFO L87 Difference]: Start difference. First operand 395 states and 483 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:52,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:52,368 INFO L93 Difference]: Finished difference Result 753 states and 930 transitions. [2021-11-13 02:39:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:52,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:39:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:52,369 INFO L225 Difference]: With dead ends: 753 [2021-11-13 02:39:52,369 INFO L226 Difference]: Without dead ends: 686 [2021-11-13 02:39:52,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:52,370 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 1640 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 491.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.38ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 605.72ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:52,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 1744 Invalid, 1429 Unknown, 0 Unchecked, 5.38ms Time], IncrementalHoareTripleChecker [46 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 605.72ms Time] [2021-11-13 02:39:52,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-11-13 02:39:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 395. [2021-11-13 02:39:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2717678100263852) internal successors, (482), 394 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 482 transitions. [2021-11-13 02:39:52,452 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 482 transitions. Word has length 97 [2021-11-13 02:39:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:52,452 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 482 transitions. [2021-11-13 02:39:52,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:52,453 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 482 transitions. [2021-11-13 02:39:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:39:52,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:52,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:52,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-13 02:39:52,454 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:52,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1604074859, now seen corresponding path program 1 times [2021-11-13 02:39:52,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:52,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659237746] [2021-11-13 02:39:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:52,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:52,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:52,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659237746] [2021-11-13 02:39:52,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659237746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:52,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:52,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:52,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193655891] [2021-11-13 02:39:52,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:52,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:52,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:52,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:52,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:52,562 INFO L87 Difference]: Start difference. First operand 395 states and 482 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:53,610 INFO L93 Difference]: Finished difference Result 722 states and 886 transitions. [2021-11-13 02:39:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:39:53,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:39:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:53,612 INFO L225 Difference]: With dead ends: 722 [2021-11-13 02:39:53,612 INFO L226 Difference]: Without dead ends: 670 [2021-11-13 02:39:53,612 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 [2021-11-13 02:39:53,613 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 1583 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 587.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.94ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 716.35ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:53,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1583 Valid, 1845 Invalid, 1526 Unknown, 0 Unchecked, 5.94ms Time], IncrementalHoareTripleChecker [65 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 716.35ms Time] [2021-11-13 02:39:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-13 02:39:53,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 395. [2021-11-13 02:39:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2691292875989446) internal successors, (481), 394 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 481 transitions. [2021-11-13 02:39:53,728 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 481 transitions. Word has length 97 [2021-11-13 02:39:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:53,729 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 481 transitions. [2021-11-13 02:39:53,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 481 transitions. [2021-11-13 02:39:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:39:53,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:53,730 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] [2021-11-13 02:39:53,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-13 02:39:53,731 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:53,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:53,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1424910206, now seen corresponding path program 1 times [2021-11-13 02:39:53,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:53,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605954534] [2021-11-13 02:39:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:53,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:53,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:53,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605954534] [2021-11-13 02:39:53,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605954534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:53,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:53,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:53,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434992928] [2021-11-13 02:39:53,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:53,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:53,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:53,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:53,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:53,849 INFO L87 Difference]: Start difference. First operand 395 states and 481 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:54,746 INFO L93 Difference]: Finished difference Result 725 states and 888 transitions. [2021-11-13 02:39:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:54,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:39:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:54,747 INFO L225 Difference]: With dead ends: 725 [2021-11-13 02:39:54,748 INFO L226 Difference]: Without dead ends: 670 [2021-11-13 02:39:54,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:54,749 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 1747 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 471.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.73ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 579.07ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:54,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 1487 Invalid, 1325 Unknown, 0 Unchecked, 4.73ms Time], IncrementalHoareTripleChecker [88 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 579.07ms Time] [2021-11-13 02:39:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-13 02:39:54,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 395. [2021-11-13 02:39:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.266490765171504) internal successors, (480), 394 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 480 transitions. [2021-11-13 02:39:54,823 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 480 transitions. Word has length 97 [2021-11-13 02:39:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:54,824 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 480 transitions. [2021-11-13 02:39:54,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:54,824 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 480 transitions. [2021-11-13 02:39:54,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:39:54,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:54,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:54,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-13 02:39:54,825 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:54,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:54,826 INFO L85 PathProgramCache]: Analyzing trace with hash -183952075, now seen corresponding path program 1 times [2021-11-13 02:39:54,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:54,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607731089] [2021-11-13 02:39:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:54,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:54,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:54,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607731089] [2021-11-13 02:39:54,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607731089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:54,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:54,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:54,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131393898] [2021-11-13 02:39:54,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:54,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:54,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:54,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:54,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:54,947 INFO L87 Difference]: Start difference. First operand 395 states and 480 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:56,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:56,160 INFO L93 Difference]: Finished difference Result 725 states and 886 transitions. [2021-11-13 02:39:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:39:56,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:39:56,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:56,161 INFO L225 Difference]: With dead ends: 725 [2021-11-13 02:39:56,161 INFO L226 Difference]: Without dead ends: 670 [2021-11-13 02:39:56,162 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 [2021-11-13 02:39:56,163 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 1568 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 654.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.03ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 796.81ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:56,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1568 Valid, 1782 Invalid, 1431 Unknown, 0 Unchecked, 7.03ms Time], IncrementalHoareTripleChecker [66 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 796.81ms Time] [2021-11-13 02:39:56,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-13 02:39:56,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 395. [2021-11-13 02:39:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2638522427440633) internal successors, (479), 394 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 479 transitions. [2021-11-13 02:39:56,291 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 479 transitions. Word has length 97 [2021-11-13 02:39:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:56,291 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 479 transitions. [2021-11-13 02:39:56,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 479 transitions. [2021-11-13 02:39:56,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:39:56,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:56,292 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] [2021-11-13 02:39:56,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-13 02:39:56,292 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:56,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:56,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1728245027, now seen corresponding path program 1 times [2021-11-13 02:39:56,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:56,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293839761] [2021-11-13 02:39:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:56,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:56,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:56,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293839761] [2021-11-13 02:39:56,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293839761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:56,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:56,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:56,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562175364] [2021-11-13 02:39:56,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:56,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:56,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:56,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:56,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:56,409 INFO L87 Difference]: Start difference. First operand 395 states and 479 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:57,640 INFO L93 Difference]: Finished difference Result 753 states and 925 transitions. [2021-11-13 02:39:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:39:57,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:39:57,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:57,642 INFO L225 Difference]: With dead ends: 753 [2021-11-13 02:39:57,642 INFO L226 Difference]: Without dead ends: 686 [2021-11-13 02:39:57,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:57,643 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 1589 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 631.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.69ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 772.45ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:57,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 1800 Invalid, 1434 Unknown, 0 Unchecked, 7.69ms Time], IncrementalHoareTripleChecker [45 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 772.45ms Time] [2021-11-13 02:39:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-11-13 02:39:57,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 395. [2021-11-13 02:39:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2612137203166227) internal successors, (478), 394 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 478 transitions. [2021-11-13 02:39:57,783 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 478 transitions. Word has length 97 [2021-11-13 02:39:57,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:57,783 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 478 transitions. [2021-11-13 02:39:57,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 478 transitions. [2021-11-13 02:39:57,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:39:57,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:57,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:57,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-13 02:39:57,786 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:57,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1459574739, now seen corresponding path program 1 times [2021-11-13 02:39:57,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:57,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133147552] [2021-11-13 02:39:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:57,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:57,908 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:57,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133147552] [2021-11-13 02:39:57,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133147552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:57,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:57,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:57,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700200738] [2021-11-13 02:39:57,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:57,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:57,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:57,909 INFO L87 Difference]: Start difference. First operand 395 states and 478 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:59,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:59,097 INFO L93 Difference]: Finished difference Result 722 states and 881 transitions. [2021-11-13 02:39:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:39:59,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:39:59,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:59,099 INFO L225 Difference]: With dead ends: 722 [2021-11-13 02:39:59,099 INFO L226 Difference]: Without dead ends: 670 [2021-11-13 02:39:59,099 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 [2021-11-13 02:39:59,101 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 1565 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 650.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.48ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 795.10ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:59,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 1920 Invalid, 1526 Unknown, 0 Unchecked, 6.48ms Time], IncrementalHoareTripleChecker [65 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 795.10ms Time] [2021-11-13 02:39:59,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-13 02:39:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 395. [2021-11-13 02:39:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2585751978891822) internal successors, (477), 394 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 477 transitions. [2021-11-13 02:39:59,179 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 477 transitions. Word has length 97 [2021-11-13 02:39:59,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:59,179 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 477 transitions. [2021-11-13 02:39:59,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 477 transitions. [2021-11-13 02:39:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:39:59,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:59,180 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] [2021-11-13 02:39:59,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-13 02:39:59,180 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:39:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1569790645, now seen corresponding path program 1 times [2021-11-13 02:39:59,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:59,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734786596] [2021-11-13 02:39:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:59,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:59,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:59,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734786596] [2021-11-13 02:39:59,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734786596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:59,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:59,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:39:59,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066462234] [2021-11-13 02:39:59,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:59,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:59,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:59,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:59,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:59,282 INFO L87 Difference]: Start difference. First operand 395 states and 477 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:00,572 INFO L93 Difference]: Finished difference Result 675 states and 817 transitions. [2021-11-13 02:40:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:40:00,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:40:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:00,576 INFO L225 Difference]: With dead ends: 675 [2021-11-13 02:40:00,576 INFO L226 Difference]: Without dead ends: 670 [2021-11-13 02:40:00,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:40:00,577 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 1605 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 661.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.44ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 805.95ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:00,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 1623 Invalid, 1428 Unknown, 0 Unchecked, 8.44ms Time], IncrementalHoareTripleChecker [83 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 805.95ms Time] [2021-11-13 02:40:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-13 02:40:00,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 395. [2021-11-13 02:40:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2559366754617414) internal successors, (476), 394 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 476 transitions. [2021-11-13 02:40:00,677 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 476 transitions. Word has length 97 [2021-11-13 02:40:00,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:00,677 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 476 transitions. [2021-11-13 02:40:00,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:00,677 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 476 transitions. [2021-11-13 02:40:00,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:40:00,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:00,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:00,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-13 02:40:00,679 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:00,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:00,679 INFO L85 PathProgramCache]: Analyzing trace with hash -810880663, now seen corresponding path program 1 times [2021-11-13 02:40:00,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:00,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701142365] [2021-11-13 02:40:00,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:00,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:00,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:00,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701142365] [2021-11-13 02:40:00,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701142365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:00,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:00,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:40:00,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916011888] [2021-11-13 02:40:00,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:00,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:00,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:00,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:00,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:00,812 INFO L87 Difference]: Start difference. First operand 395 states and 476 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:01,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:01,832 INFO L93 Difference]: Finished difference Result 722 states and 878 transitions. [2021-11-13 02:40:01,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:40:01,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:40:01,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:01,833 INFO L225 Difference]: With dead ends: 722 [2021-11-13 02:40:01,833 INFO L226 Difference]: Without dead ends: 670 [2021-11-13 02:40:01,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:40:01,834 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 1709 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 509.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.85ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 626.57ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:01,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 1539 Invalid, 1316 Unknown, 0 Unchecked, 5.85ms Time], IncrementalHoareTripleChecker [86 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 626.57ms Time] [2021-11-13 02:40:01,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-13 02:40:01,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 395. [2021-11-13 02:40:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2532981530343008) internal successors, (475), 394 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 475 transitions. [2021-11-13 02:40:01,943 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 475 transitions. Word has length 97 [2021-11-13 02:40:01,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:01,943 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 475 transitions. [2021-11-13 02:40:01,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:01,943 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 475 transitions. [2021-11-13 02:40:01,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:40:01,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:01,944 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] [2021-11-13 02:40:01,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-13 02:40:01,945 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:01,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:01,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1948776647, now seen corresponding path program 1 times [2021-11-13 02:40:01,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:01,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181051398] [2021-11-13 02:40:01,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:01,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:02,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:02,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181051398] [2021-11-13 02:40:02,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181051398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:02,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:02,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:40:02,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086540584] [2021-11-13 02:40:02,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:02,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:02,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:02,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:02,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:02,078 INFO L87 Difference]: Start difference. First operand 395 states and 475 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:03,339 INFO L93 Difference]: Finished difference Result 720 states and 874 transitions. [2021-11-13 02:40:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:40:03,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:40:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:03,341 INFO L225 Difference]: With dead ends: 720 [2021-11-13 02:40:03,341 INFO L226 Difference]: Without dead ends: 670 [2021-11-13 02:40:03,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:40:03,342 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1558 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 662.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.47ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 813.59ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:03,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 1812 Invalid, 1418 Unknown, 0 Unchecked, 7.47ms Time], IncrementalHoareTripleChecker [66 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 813.59ms Time] [2021-11-13 02:40:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-13 02:40:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 395. [2021-11-13 02:40:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2506596306068603) internal successors, (474), 394 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 474 transitions. [2021-11-13 02:40:03,455 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 474 transitions. Word has length 97 [2021-11-13 02:40:03,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:03,456 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 474 transitions. [2021-11-13 02:40:03,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:03,456 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 474 transitions. [2021-11-13 02:40:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:40:03,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:03,457 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] [2021-11-13 02:40:03,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-13 02:40:03,457 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:03,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:03,458 INFO L85 PathProgramCache]: Analyzing trace with hash 766051541, now seen corresponding path program 1 times [2021-11-13 02:40:03,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:03,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022582] [2021-11-13 02:40:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:03,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:03,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:03,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022582] [2021-11-13 02:40:03,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:03,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:03,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:40:03,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895737403] [2021-11-13 02:40:03,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:03,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:03,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:03,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:03,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:03,590 INFO L87 Difference]: Start difference. First operand 395 states and 474 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:04,865 INFO L93 Difference]: Finished difference Result 675 states and 812 transitions. [2021-11-13 02:40:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:40:04,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:40:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:04,868 INFO L225 Difference]: With dead ends: 675 [2021-11-13 02:40:04,868 INFO L226 Difference]: Without dead ends: 670 [2021-11-13 02:40:04,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:40:04,869 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 1547 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 668.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.32ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 819.99ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:04,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 1837 Invalid, 1415 Unknown, 0 Unchecked, 7.32ms Time], IncrementalHoareTripleChecker [66 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 819.99ms Time] [2021-11-13 02:40:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-13 02:40:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 395. [2021-11-13 02:40:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2480211081794195) internal successors, (473), 394 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 473 transitions. [2021-11-13 02:40:04,972 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 473 transitions. Word has length 97 [2021-11-13 02:40:04,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:04,972 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 473 transitions. [2021-11-13 02:40:04,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:04,973 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 473 transitions. [2021-11-13 02:40:04,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:40:04,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:04,974 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] [2021-11-13 02:40:04,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-13 02:40:04,974 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:04,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1616718653, now seen corresponding path program 1 times [2021-11-13 02:40:04,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:04,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266127351] [2021-11-13 02:40:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:04,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:05,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:05,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266127351] [2021-11-13 02:40:05,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266127351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:05,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:05,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:40:05,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484998789] [2021-11-13 02:40:05,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:05,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:05,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:05,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:05,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:05,107 INFO L87 Difference]: Start difference. First operand 395 states and 473 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:06,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:06,348 INFO L93 Difference]: Finished difference Result 703 states and 850 transitions. [2021-11-13 02:40:06,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:40:06,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:40:06,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:06,354 INFO L225 Difference]: With dead ends: 703 [2021-11-13 02:40:06,354 INFO L226 Difference]: Without dead ends: 686 [2021-11-13 02:40:06,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:40:06,357 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 1590 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 616.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.85ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 761.71ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:06,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 1780 Invalid, 1373 Unknown, 0 Unchecked, 7.85ms Time], IncrementalHoareTripleChecker [46 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 761.71ms Time] [2021-11-13 02:40:06,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-11-13 02:40:06,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 395. [2021-11-13 02:40:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.245382585751979) internal successors, (472), 394 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 472 transitions. [2021-11-13 02:40:06,523 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 472 transitions. Word has length 97 [2021-11-13 02:40:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:06,523 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 472 transitions. [2021-11-13 02:40:06,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 472 transitions. [2021-11-13 02:40:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:40:06,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:06,525 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] [2021-11-13 02:40:06,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-13 02:40:06,526 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:06,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1276634052, now seen corresponding path program 1 times [2021-11-13 02:40:06,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:06,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327314984] [2021-11-13 02:40:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:06,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:06,658 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:06,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327314984] [2021-11-13 02:40:06,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327314984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:06,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:06,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:40:06,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857336595] [2021-11-13 02:40:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:06,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:06,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:06,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:06,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:06,660 INFO L87 Difference]: Start difference. First operand 395 states and 472 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:07,936 INFO L93 Difference]: Finished difference Result 722 states and 873 transitions. [2021-11-13 02:40:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:40:07,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:40:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:07,938 INFO L225 Difference]: With dead ends: 722 [2021-11-13 02:40:07,939 INFO L226 Difference]: Without dead ends: 670 [2021-11-13 02:40:07,939 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 [2021-11-13 02:40:07,940 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 1545 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 678.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.00ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 830.44ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:07,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1954 Invalid, 1510 Unknown, 0 Unchecked, 7.00ms Time], IncrementalHoareTripleChecker [65 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 830.44ms Time] [2021-11-13 02:40:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-13 02:40:08,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 395. [2021-11-13 02:40:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2427440633245384) internal successors, (471), 394 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 471 transitions. [2021-11-13 02:40:08,049 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 471 transitions. Word has length 97 [2021-11-13 02:40:08,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:08,049 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 471 transitions. [2021-11-13 02:40:08,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:08,049 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 471 transitions. [2021-11-13 02:40:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:40:08,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:08,050 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] [2021-11-13 02:40:08,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-13 02:40:08,051 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:08,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash 10914966, now seen corresponding path program 1 times [2021-11-13 02:40:08,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:08,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333862049] [2021-11-13 02:40:08,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:08,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:08,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:08,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333862049] [2021-11-13 02:40:08,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333862049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:08,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:08,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:40:08,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906541325] [2021-11-13 02:40:08,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:08,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:08,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:08,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:08,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:08,180 INFO L87 Difference]: Start difference. First operand 395 states and 471 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:09,626 INFO L93 Difference]: Finished difference Result 675 states and 809 transitions. [2021-11-13 02:40:09,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:40:09,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 02:40:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:09,628 INFO L225 Difference]: With dead ends: 675 [2021-11-13 02:40:09,628 INFO L226 Difference]: Without dead ends: 670 [2021-11-13 02:40:09,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:40:09,629 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1102 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 712.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.05ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 873.62ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:09,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 1655 Invalid, 1389 Unknown, 0 Unchecked, 8.05ms Time], IncrementalHoareTripleChecker [54 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 873.62ms Time] [2021-11-13 02:40:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-13 02:40:09,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 395. [2021-11-13 02:40:09,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2401055408970976) internal successors, (470), 394 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:09,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 470 transitions. [2021-11-13 02:40:09,739 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 470 transitions. Word has length 97 [2021-11-13 02:40:09,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:09,739 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 470 transitions. [2021-11-13 02:40:09,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:09,740 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 470 transitions. [2021-11-13 02:40:09,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 02:40:09,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:09,741 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] [2021-11-13 02:40:09,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-13 02:40:09,742 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:09,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:09,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1517389818, now seen corresponding path program 1 times [2021-11-13 02:40:09,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:09,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701107725] [2021-11-13 02:40:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:09,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:10,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:10,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701107725] [2021-11-13 02:40:10,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701107725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:10,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:10,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 02:40:10,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739491211] [2021-11-13 02:40:10,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:10,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:40:10,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:10,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:40:10,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:40:10,208 INFO L87 Difference]: Start difference. First operand 395 states and 470 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 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) [2021-11-13 02:40:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:12,439 INFO L93 Difference]: Finished difference Result 1206 states and 1489 transitions. [2021-11-13 02:40:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 02:40:12,439 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 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 [2021-11-13 02:40:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:12,441 INFO L225 Difference]: With dead ends: 1206 [2021-11-13 02:40:12,441 INFO L226 Difference]: Without dead ends: 1093 [2021-11-13 02:40:12,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-13 02:40:12,442 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 2000 mSDsluCounter, 7542 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 679.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2000 SdHoareTripleChecker+Valid, 8282 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.48ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 807.68ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:12,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2000 Valid, 8282 Invalid, 1101 Unknown, 0 Unchecked, 18.48ms Time], IncrementalHoareTripleChecker [23 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 807.68ms Time] [2021-11-13 02:40:12,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2021-11-13 02:40:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 332. [2021-11-13 02:40:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 320 states have (on average 1.225) internal successors, (392), 331 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 392 transitions. [2021-11-13 02:40:12,538 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 392 transitions. Word has length 99 [2021-11-13 02:40:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:12,538 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 392 transitions. [2021-11-13 02:40:12,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 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) [2021-11-13 02:40:12,538 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 392 transitions. [2021-11-13 02:40:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 02:40:12,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:12,539 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] [2021-11-13 02:40:12,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-13 02:40:12,539 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:12,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:12,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2051081877, now seen corresponding path program 1 times [2021-11-13 02:40:12,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:12,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943248047] [2021-11-13 02:40:12,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:12,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:12,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:12,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:12,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943248047] [2021-11-13 02:40:12,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943248047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:12,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:12,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 02:40:12,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271408424] [2021-11-13 02:40:12,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:12,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:40:12,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:12,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:40:12,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:40:12,944 INFO L87 Difference]: Start difference. First operand 332 states and 392 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 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) [2021-11-13 02:40:14,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:14,173 INFO L93 Difference]: Finished difference Result 530 states and 628 transitions. [2021-11-13 02:40:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:40:14,173 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 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 [2021-11-13 02:40:14,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:14,174 INFO L225 Difference]: With dead ends: 530 [2021-11-13 02:40:14,174 INFO L226 Difference]: Without dead ends: 476 [2021-11-13 02:40:14,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-13 02:40:14,174 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 1949 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 506.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.79ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 600.23ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:14,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1949 Valid, 2111 Invalid, 1017 Unknown, 0 Unchecked, 6.79ms Time], IncrementalHoareTripleChecker [88 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 600.23ms Time] [2021-11-13 02:40:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-13 02:40:14,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 328. [2021-11-13 02:40:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 317 states have (on average 1.220820189274448) internal successors, (387), 327 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 387 transitions. [2021-11-13 02:40:14,260 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 387 transitions. Word has length 99 [2021-11-13 02:40:14,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:14,260 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 387 transitions. [2021-11-13 02:40:14,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 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) [2021-11-13 02:40:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 387 transitions. [2021-11-13 02:40:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 02:40:14,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:14,261 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] [2021-11-13 02:40:14,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-13 02:40:14,261 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:14,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1752184082, now seen corresponding path program 1 times [2021-11-13 02:40:14,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:14,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769830781] [2021-11-13 02:40:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:14,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:14,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:14,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769830781] [2021-11-13 02:40:14,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769830781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:14,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:14,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 02:40:14,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735057982] [2021-11-13 02:40:14,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:14,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:40:14,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:14,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:40:14,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:40:14,584 INFO L87 Difference]: Start difference. First operand 328 states and 387 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 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) [2021-11-13 02:40:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:15,733 INFO L93 Difference]: Finished difference Result 530 states and 626 transitions. [2021-11-13 02:40:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:40:15,734 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 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 [2021-11-13 02:40:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:15,736 INFO L225 Difference]: With dead ends: 530 [2021-11-13 02:40:15,736 INFO L226 Difference]: Without dead ends: 476 [2021-11-13 02:40:15,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-13 02:40:15,737 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1696 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 455.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 540.03ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:15,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1696 Valid, 1981 Invalid, 927 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [80 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 540.03ms Time] [2021-11-13 02:40:15,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-13 02:40:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 324. [2021-11-13 02:40:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 314 states have (on average 1.21656050955414) internal successors, (382), 323 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 382 transitions. [2021-11-13 02:40:15,893 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 382 transitions. Word has length 99 [2021-11-13 02:40:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:15,894 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 382 transitions. [2021-11-13 02:40:15,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 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) [2021-11-13 02:40:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 382 transitions. [2021-11-13 02:40:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 02:40:15,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:15,895 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] [2021-11-13 02:40:15,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-13 02:40:15,895 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:15,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash -28333066, now seen corresponding path program 1 times [2021-11-13 02:40:15,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:15,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891432334] [2021-11-13 02:40:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:15,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:17,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:17,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891432334] [2021-11-13 02:40:17,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891432334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:17,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:17,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-13 02:40:17,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717511108] [2021-11-13 02:40:17,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:17,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 02:40:17,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 02:40:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2021-11-13 02:40:17,023 INFO L87 Difference]: Start difference. First operand 324 states and 382 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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) [2021-11-13 02:40:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:24,697 INFO L93 Difference]: Finished difference Result 1439 states and 1721 transitions. [2021-11-13 02:40:24,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 02:40:24,697 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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 [2021-11-13 02:40:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:24,699 INFO L225 Difference]: With dead ends: 1439 [2021-11-13 02:40:24,699 INFO L226 Difference]: Without dead ends: 1382 [2021-11-13 02:40:24,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=455, Invalid=2737, Unknown=0, NotChecked=0, Total=3192 [2021-11-13 02:40:24,700 INFO L933 BasicCegarLoop]: 1249 mSDtfsCounter, 4242 mSDsluCounter, 19254 mSDsCounter, 0 mSdLazyCounter, 10830 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4896.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4242 SdHoareTripleChecker+Valid, 20307 SdHoareTripleChecker+Invalid, 10977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.96ms SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 10830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5763.23ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:24,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4242 Valid, 20307 Invalid, 10977 Unknown, 0 Unchecked, 55.96ms Time], IncrementalHoareTripleChecker [147 Valid, 10830 Invalid, 0 Unknown, 0 Unchecked, 5763.23ms Time] [2021-11-13 02:40:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-11-13 02:40:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 348. [2021-11-13 02:40:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 338 states have (on average 1.2189349112426036) internal successors, (412), 347 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 412 transitions. [2021-11-13 02:40:24,806 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 412 transitions. Word has length 99 [2021-11-13 02:40:24,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:24,806 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 412 transitions. [2021-11-13 02:40:24,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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) [2021-11-13 02:40:24,806 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 412 transitions. [2021-11-13 02:40:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 02:40:24,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:24,807 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] [2021-11-13 02:40:24,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-13 02:40:24,807 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:24,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:24,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1080698848, now seen corresponding path program 1 times [2021-11-13 02:40:24,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:24,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969093289] [2021-11-13 02:40:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:24,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:25,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:25,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969093289] [2021-11-13 02:40:25,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969093289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:25,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:25,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 02:40:25,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722560022] [2021-11-13 02:40:25,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:25,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:40:25,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:25,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:40:25,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:40:25,126 INFO L87 Difference]: Start difference. First operand 348 states and 412 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 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) [2021-11-13 02:40:26,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:26,670 INFO L93 Difference]: Finished difference Result 1135 states and 1400 transitions. [2021-11-13 02:40:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 02:40:26,671 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 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 [2021-11-13 02:40:26,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:26,672 INFO L225 Difference]: With dead ends: 1135 [2021-11-13 02:40:26,672 INFO L226 Difference]: Without dead ends: 1036 [2021-11-13 02:40:26,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-11-13 02:40:26,673 INFO L933 BasicCegarLoop]: 857 mSDtfsCounter, 2042 mSDsluCounter, 5879 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 394.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 6498 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.64ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 472.33ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:26,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2042 Valid, 6498 Invalid, 832 Unknown, 0 Unchecked, 9.64ms Time], IncrementalHoareTripleChecker [28 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 472.33ms Time] [2021-11-13 02:40:26,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-11-13 02:40:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 299. [2021-11-13 02:40:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 290 states have (on average 1.203448275862069) internal successors, (349), 298 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 349 transitions. [2021-11-13 02:40:26,766 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 349 transitions. Word has length 99 [2021-11-13 02:40:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:26,766 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 349 transitions. [2021-11-13 02:40:26,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 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) [2021-11-13 02:40:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 349 transitions. [2021-11-13 02:40:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 02:40:26,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:26,767 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] [2021-11-13 02:40:26,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-13 02:40:26,767 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:26,768 INFO L85 PathProgramCache]: Analyzing trace with hash -122361806, now seen corresponding path program 1 times [2021-11-13 02:40:26,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:26,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823883209] [2021-11-13 02:40:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:26,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:27,080 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:27,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823883209] [2021-11-13 02:40:27,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823883209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:27,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:27,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 02:40:27,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43912424] [2021-11-13 02:40:27,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:27,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:40:27,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:27,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:40:27,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:40:27,082 INFO L87 Difference]: Start difference. First operand 299 states and 349 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 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) [2021-11-13 02:40:28,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:28,505 INFO L93 Difference]: Finished difference Result 829 states and 1011 transitions. [2021-11-13 02:40:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 02:40:28,506 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 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 [2021-11-13 02:40:28,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:28,506 INFO L225 Difference]: With dead ends: 829 [2021-11-13 02:40:28,506 INFO L226 Difference]: Without dead ends: 710 [2021-11-13 02:40:28,507 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 [2021-11-13 02:40:28,507 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 1650 mSDsluCounter, 4256 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 335.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 4797 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.38ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 400.04ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:28,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1650 Valid, 4797 Invalid, 656 Unknown, 0 Unchecked, 8.38ms Time], IncrementalHoareTripleChecker [20 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 400.04ms Time] [2021-11-13 02:40:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-11-13 02:40:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 230. [2021-11-13 02:40:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.1866666666666668) internal successors, (267), 229 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 267 transitions. [2021-11-13 02:40:28,605 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 267 transitions. Word has length 99 [2021-11-13 02:40:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:28,605 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 267 transitions. [2021-11-13 02:40:28,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 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) [2021-11-13 02:40:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 267 transitions. [2021-11-13 02:40:28,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 02:40:28,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:28,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:28,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-13 02:40:28,606 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:28,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash -480559089, now seen corresponding path program 1 times [2021-11-13 02:40:28,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:28,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044426449] [2021-11-13 02:40:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:28,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:29,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:29,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044426449] [2021-11-13 02:40:29,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044426449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:29,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:29,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 02:40:29,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172906938] [2021-11-13 02:40:29,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:29,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:40:29,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:29,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:40:29,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:40:29,009 INFO L87 Difference]: Start difference. First operand 230 states and 267 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:30,270 INFO L93 Difference]: Finished difference Result 519 states and 627 transitions. [2021-11-13 02:40:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:40:30,270 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-13 02:40:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:30,271 INFO L225 Difference]: With dead ends: 519 [2021-11-13 02:40:30,271 INFO L226 Difference]: Without dead ends: 454 [2021-11-13 02:40:30,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:40:30,272 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1124 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.48ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 370.54ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:30,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 2774 Invalid, 567 Unknown, 0 Unchecked, 6.48ms Time], IncrementalHoareTripleChecker [26 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 370.54ms Time] [2021-11-13 02:40:30,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-13 02:40:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 195. [2021-11-13 02:40:30,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.1675392670157068) internal successors, (223), 194 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:30,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 223 transitions. [2021-11-13 02:40:30,369 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 223 transitions. Word has length 100 [2021-11-13 02:40:30,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:30,369 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 223 transitions. [2021-11-13 02:40:30,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:30,370 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 223 transitions. [2021-11-13 02:40:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 02:40:30,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:30,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:30,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-13 02:40:30,370 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:30,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash -125460370, now seen corresponding path program 1 times [2021-11-13 02:40:30,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:30,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635535558] [2021-11-13 02:40:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:30,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:30,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:30,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635535558] [2021-11-13 02:40:30,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635535558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:30,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:30,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:40:30,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30298078] [2021-11-13 02:40:30,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:30,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:30,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:30,492 INFO L87 Difference]: Start difference. First operand 195 states and 223 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:31,019 INFO L93 Difference]: Finished difference Result 287 states and 332 transitions. [2021-11-13 02:40:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:40:31,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-13 02:40:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:31,020 INFO L225 Difference]: With dead ends: 287 [2021-11-13 02:40:31,020 INFO L226 Difference]: Without dead ends: 280 [2021-11-13 02:40:31,021 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 [2021-11-13 02:40:31,024 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 661 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 267.21ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:31,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 728 Invalid, 539 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [20 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 267.21ms Time] [2021-11-13 02:40:31,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-13 02:40:31,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 195. [2021-11-13 02:40:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.162303664921466) internal successors, (222), 194 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:31,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2021-11-13 02:40:31,107 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 100 [2021-11-13 02:40:31,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:31,107 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2021-11-13 02:40:31,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:31,108 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2021-11-13 02:40:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 02:40:31,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:31,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:31,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-13 02:40:31,109 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:31,110 INFO L85 PathProgramCache]: Analyzing trace with hash 38543128, now seen corresponding path program 1 times [2021-11-13 02:40:31,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:31,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685723645] [2021-11-13 02:40:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:31,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:31,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:31,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685723645] [2021-11-13 02:40:31,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685723645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:31,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:31,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:40:31,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316945340] [2021-11-13 02:40:31,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:31,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:31,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:31,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:31,228 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:32,032 INFO L93 Difference]: Finished difference Result 352 states and 416 transitions. [2021-11-13 02:40:32,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:40:32,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-13 02:40:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:32,033 INFO L225 Difference]: With dead ends: 352 [2021-11-13 02:40:32,033 INFO L226 Difference]: Without dead ends: 284 [2021-11-13 02:40:32,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-13 02:40:32,034 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 557 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 277.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.05ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 338.88ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:32,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 623 Invalid, 502 Unknown, 0 Unchecked, 4.05ms Time], IncrementalHoareTripleChecker [11 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 338.88ms Time] [2021-11-13 02:40:32,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-13 02:40:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 195. [2021-11-13 02:40:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.1570680628272252) internal successors, (221), 194 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 221 transitions. [2021-11-13 02:40:32,209 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 221 transitions. Word has length 100 [2021-11-13 02:40:32,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:32,209 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 221 transitions. [2021-11-13 02:40:32,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 221 transitions. [2021-11-13 02:40:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 02:40:32,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:32,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:32,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-13 02:40:32,216 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:32,216 INFO L85 PathProgramCache]: Analyzing trace with hash -801357341, now seen corresponding path program 1 times [2021-11-13 02:40:32,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:32,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917375598] [2021-11-13 02:40:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:32,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:32,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:32,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917375598] [2021-11-13 02:40:32,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917375598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:32,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:32,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:40:32,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995941427] [2021-11-13 02:40:32,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:32,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:32,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:32,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:32,377 INFO L87 Difference]: Start difference. First operand 195 states and 221 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:33,218 INFO L93 Difference]: Finished difference Result 287 states and 330 transitions. [2021-11-13 02:40:33,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:40:33,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-13 02:40:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:33,219 INFO L225 Difference]: With dead ends: 287 [2021-11-13 02:40:33,219 INFO L226 Difference]: Without dead ends: 280 [2021-11-13 02:40:33,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-11-13 02:40:33,220 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 655 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 327.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.44ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 398.76ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:33,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 701 Invalid, 582 Unknown, 0 Unchecked, 4.44ms Time], IncrementalHoareTripleChecker [22 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 398.76ms Time] [2021-11-13 02:40:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-13 02:40:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 195. [2021-11-13 02:40:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.1518324607329844) internal successors, (220), 194 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:33,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 220 transitions. [2021-11-13 02:40:33,336 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 220 transitions. Word has length 100 [2021-11-13 02:40:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:33,337 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 220 transitions. [2021-11-13 02:40:33,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 220 transitions. [2021-11-13 02:40:33,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-13 02:40:33,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:33,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:33,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-13 02:40:33,338 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:33,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash 912718675, now seen corresponding path program 1 times [2021-11-13 02:40:33,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:33,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768861804] [2021-11-13 02:40:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:33,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:33,700 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:33,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768861804] [2021-11-13 02:40:33,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768861804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:33,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:33,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 02:40:33,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952519409] [2021-11-13 02:40:33,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:33,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:40:33,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:33,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:40:33,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:40:33,703 INFO L87 Difference]: Start difference. First operand 195 states and 220 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:35,023 INFO L93 Difference]: Finished difference Result 386 states and 459 transitions. [2021-11-13 02:40:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:40:35,023 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-13 02:40:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:35,024 INFO L225 Difference]: With dead ends: 386 [2021-11-13 02:40:35,024 INFO L226 Difference]: Without dead ends: 380 [2021-11-13 02:40:35,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-13 02:40:35,025 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 928 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 370.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.86ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 443.73ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:35,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 2077 Invalid, 553 Unknown, 0 Unchecked, 6.86ms Time], IncrementalHoareTripleChecker [23 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 443.73ms Time] [2021-11-13 02:40:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-13 02:40:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 189. [2021-11-13 02:40:35,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 186 states have (on average 1.1505376344086022) internal successors, (214), 188 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 214 transitions. [2021-11-13 02:40:35,148 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 214 transitions. Word has length 102 [2021-11-13 02:40:35,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:35,149 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 214 transitions. [2021-11-13 02:40:35,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 214 transitions. [2021-11-13 02:40:35,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-13 02:40:35,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:35,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:35,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-13 02:40:35,150 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:35,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:35,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1107731518, now seen corresponding path program 1 times [2021-11-13 02:40:35,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:35,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232635979] [2021-11-13 02:40:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:35,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:36,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:36,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232635979] [2021-11-13 02:40:36,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232635979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:36,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:36,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-13 02:40:36,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819434171] [2021-11-13 02:40:36,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:36,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 02:40:36,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:36,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 02:40:36,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2021-11-13 02:40:36,753 INFO L87 Difference]: Start difference. First operand 189 states and 214 transitions. Second operand has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:44,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:44,746 INFO L93 Difference]: Finished difference Result 804 states and 951 transitions. [2021-11-13 02:40:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 02:40:44,747 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-13 02:40:44,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:44,748 INFO L225 Difference]: With dead ends: 804 [2021-11-13 02:40:44,748 INFO L226 Difference]: Without dead ends: 796 [2021-11-13 02:40:44,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=455, Invalid=2737, Unknown=0, NotChecked=0, Total=3192 [2021-11-13 02:40:44,749 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 2055 mSDsluCounter, 11729 mSDsCounter, 0 mSdLazyCounter, 6125 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4117.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 12197 SdHoareTripleChecker+Invalid, 6199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.52ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 6125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4815.83ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:44,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2055 Valid, 12197 Invalid, 6199 Unknown, 0 Unchecked, 50.52ms Time], IncrementalHoareTripleChecker [74 Valid, 6125 Invalid, 0 Unknown, 0 Unchecked, 4815.83ms Time] [2021-11-13 02:40:44,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-11-13 02:40:44,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 213. [2021-11-13 02:40:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 210 states have (on average 1.1571428571428573) internal successors, (243), 212 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 243 transitions. [2021-11-13 02:40:44,891 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 243 transitions. Word has length 102 [2021-11-13 02:40:44,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:44,891 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 243 transitions. [2021-11-13 02:40:44,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 243 transitions. [2021-11-13 02:40:44,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-13 02:40:44,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:44,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:44,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-13 02:40:44,893 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash 110806707, now seen corresponding path program 1 times [2021-11-13 02:40:44,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:44,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495187978] [2021-11-13 02:40:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:44,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:46,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:46,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495187978] [2021-11-13 02:40:46,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495187978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:46,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:46,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-13 02:40:46,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906070769] [2021-11-13 02:40:46,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:46,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 02:40:46,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:46,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 02:40:46,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2021-11-13 02:40:46,220 INFO L87 Difference]: Start difference. First operand 213 states and 243 transitions. Second operand has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:52,379 INFO L93 Difference]: Finished difference Result 809 states and 957 transitions. [2021-11-13 02:40:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 02:40:52,380 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-13 02:40:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:52,381 INFO L225 Difference]: With dead ends: 809 [2021-11-13 02:40:52,381 INFO L226 Difference]: Without dead ends: 801 [2021-11-13 02:40:52,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=455, Invalid=2737, Unknown=0, NotChecked=0, Total=3192 [2021-11-13 02:40:52,382 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 2000 mSDsluCounter, 11378 mSDsCounter, 0 mSdLazyCounter, 5897 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3331.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2000 SdHoareTripleChecker+Valid, 11847 SdHoareTripleChecker+Invalid, 5963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.82ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 5897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3930.17ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:52,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2000 Valid, 11847 Invalid, 5963 Unknown, 0 Unchecked, 41.82ms Time], IncrementalHoareTripleChecker [66 Valid, 5897 Invalid, 0 Unknown, 0 Unchecked, 3930.17ms Time] [2021-11-13 02:40:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-11-13 02:40:52,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 222. [2021-11-13 02:40:52,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 219 states have (on average 1.1598173515981736) internal successors, (254), 221 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 254 transitions. [2021-11-13 02:40:52,504 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 254 transitions. Word has length 102 [2021-11-13 02:40:52,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:52,504 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 254 transitions. [2021-11-13 02:40:52,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,504 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 254 transitions. [2021-11-13 02:40:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 02:40:52,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:52,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:52,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-13 02:40:52,505 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2140279419, now seen corresponding path program 1 times [2021-11-13 02:40:52,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:52,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118979052] [2021-11-13 02:40:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:52,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:52,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:52,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118979052] [2021-11-13 02:40:52,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118979052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:52,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:52,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 02:40:52,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150140463] [2021-11-13 02:40:52,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:52,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:40:52,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:52,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:40:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:40:52,902 INFO L87 Difference]: Start difference. First operand 222 states and 254 transitions. Second operand has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:54,298 INFO L93 Difference]: Finished difference Result 531 states and 646 transitions. [2021-11-13 02:40:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 02:40:54,298 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-13 02:40:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:54,299 INFO L225 Difference]: With dead ends: 531 [2021-11-13 02:40:54,299 INFO L226 Difference]: Without dead ends: 516 [2021-11-13 02:40:54,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-13 02:40:54,300 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1107 mSDsluCounter, 2511 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 327.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.43ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 390.72ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:54,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 2798 Invalid, 585 Unknown, 0 Unchecked, 6.43ms Time], IncrementalHoareTripleChecker [23 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 390.72ms Time] [2021-11-13 02:40:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-13 02:40:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 201. [2021-11-13 02:40:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 199 states have (on average 1.1557788944723617) internal successors, (230), 200 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2021-11-13 02:40:54,440 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 103 [2021-11-13 02:40:54,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:54,440 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2021-11-13 02:40:54,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2021-11-13 02:40:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 02:40:54,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:54,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:54,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-13 02:40:54,441 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:54,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:54,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1157763066, now seen corresponding path program 1 times [2021-11-13 02:40:54,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:54,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886196278] [2021-11-13 02:40:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:54,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:54,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:54,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886196278] [2021-11-13 02:40:54,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886196278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:54,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:54,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 02:40:54,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160716733] [2021-11-13 02:40:54,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:54,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:40:54,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:40:54,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:40:54,841 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:55,936 INFO L93 Difference]: Finished difference Result 464 states and 564 transitions. [2021-11-13 02:40:55,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:40:55,937 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-13 02:40:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:55,937 INFO L225 Difference]: With dead ends: 464 [2021-11-13 02:40:55,937 INFO L226 Difference]: Without dead ends: 438 [2021-11-13 02:40:55,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:40:55,938 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 797 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.77ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 277.04ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:55,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 2157 Invalid, 433 Unknown, 0 Unchecked, 4.77ms Time], IncrementalHoareTripleChecker [13 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 277.04ms Time] [2021-11-13 02:40:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-11-13 02:40:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 159. [2021-11-13 02:40:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.1455696202531647) internal successors, (181), 158 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 181 transitions. [2021-11-13 02:40:56,060 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 181 transitions. Word has length 103 [2021-11-13 02:40:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:56,060 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 181 transitions. [2021-11-13 02:40:56,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:56,061 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 181 transitions. [2021-11-13 02:40:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 02:40:56,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:56,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:56,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-13 02:40:56,062 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:56,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:56,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1892469352, now seen corresponding path program 1 times [2021-11-13 02:40:56,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:56,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857431492] [2021-11-13 02:40:56,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:56,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:56,126 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:56,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857431492] [2021-11-13 02:40:56,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857431492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:56,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:56,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:40:56,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491195094] [2021-11-13 02:40:56,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:56,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:40:56,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:56,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:40:56,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:56,129 INFO L87 Difference]: Start difference. First operand 159 states and 181 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:56,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:56,448 INFO L93 Difference]: Finished difference Result 259 states and 311 transitions. [2021-11-13 02:40:56,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:40:56,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-13 02:40:56,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:56,449 INFO L225 Difference]: With dead ends: 259 [2021-11-13 02:40:56,449 INFO L226 Difference]: Without dead ends: 209 [2021-11-13 02:40:56,450 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 [2021-11-13 02:40:56,450 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 74 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.80ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:56,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 346 Invalid, 29 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 39.80ms Time] [2021-11-13 02:40:56,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-13 02:40:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 203. [2021-11-13 02:40:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.183168316831683) internal successors, (239), 202 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 239 transitions. [2021-11-13 02:40:56,730 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 239 transitions. Word has length 122 [2021-11-13 02:40:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:56,730 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 239 transitions. [2021-11-13 02:40:56,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 239 transitions. [2021-11-13 02:40:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-13 02:40:56,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:56,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:56,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-13 02:40:56,732 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:56,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:56,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2076374810, now seen corresponding path program 1 times [2021-11-13 02:40:56,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:56,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416086192] [2021-11-13 02:40:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:56,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:56,808 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:56,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416086192] [2021-11-13 02:40:56,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416086192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:56,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:56,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:40:56,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659585893] [2021-11-13 02:40:56,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:56,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:40:56,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:56,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:40:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:56,811 INFO L87 Difference]: Start difference. First operand 203 states and 239 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:57,385 INFO L93 Difference]: Finished difference Result 391 states and 485 transitions. [2021-11-13 02:40:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:40:57,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-13 02:40:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:57,387 INFO L225 Difference]: With dead ends: 391 [2021-11-13 02:40:57,387 INFO L226 Difference]: Without dead ends: 297 [2021-11-13 02:40:57,387 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 [2021-11-13 02:40:57,388 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 67 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.11ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:57,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 346 Invalid, 29 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 41.11ms Time] [2021-11-13 02:40:57,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-13 02:40:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 287. [2021-11-13 02:40:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.2202797202797202) internal successors, (349), 286 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 349 transitions. [2021-11-13 02:40:57,792 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 349 transitions. Word has length 125 [2021-11-13 02:40:57,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:57,792 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 349 transitions. [2021-11-13 02:40:57,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 349 transitions. [2021-11-13 02:40:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-13 02:40:57,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:57,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:57,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-13 02:40:57,794 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:57,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:57,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1820460941, now seen corresponding path program 1 times [2021-11-13 02:40:57,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:57,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458990573] [2021-11-13 02:40:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:57,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:57,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:57,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458990573] [2021-11-13 02:40:57,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458990573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:57,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:57,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:40:57,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449105721] [2021-11-13 02:40:57,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:57,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:40:57,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:57,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:40:57,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:57,853 INFO L87 Difference]: Start difference. First operand 287 states and 349 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:58,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:58,564 INFO L93 Difference]: Finished difference Result 643 states and 815 transitions. [2021-11-13 02:40:58,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:40:58,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-13 02:40:58,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:58,566 INFO L225 Difference]: With dead ends: 643 [2021-11-13 02:40:58,566 INFO L226 Difference]: Without dead ends: 465 [2021-11-13 02:40:58,566 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 [2021-11-13 02:40:58,567 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 60 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.85ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.34ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:58,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 346 Invalid, 29 Unknown, 0 Unchecked, 0.85ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 37.34ms Time] [2021-11-13 02:40:58,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-13 02:40:59,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 447. [2021-11-13 02:40:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.248878923766816) internal successors, (557), 446 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 557 transitions. [2021-11-13 02:40:59,179 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 557 transitions. Word has length 128 [2021-11-13 02:40:59,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:59,180 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 557 transitions. [2021-11-13 02:40:59,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:59,180 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 557 transitions. [2021-11-13 02:40:59,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-13 02:40:59,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:59,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:59,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-13 02:40:59,182 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:40:59,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:59,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1297346761, now seen corresponding path program 1 times [2021-11-13 02:40:59,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:59,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762748088] [2021-11-13 02:40:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:59,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:59,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:59,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762748088] [2021-11-13 02:40:59,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762748088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:59,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:59,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:40:59,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253086967] [2021-11-13 02:40:59,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:59,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:40:59,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:59,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:40:59,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:59,256 INFO L87 Difference]: Start difference. First operand 447 states and 557 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:00,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:00,719 INFO L93 Difference]: Finished difference Result 1123 states and 1439 transitions. [2021-11-13 02:41:00,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:41:00,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-13 02:41:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:00,721 INFO L225 Difference]: With dead ends: 1123 [2021-11-13 02:41:00,721 INFO L226 Difference]: Without dead ends: 785 [2021-11-13 02:41:00,722 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 [2021-11-13 02:41:00,725 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 53 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.96ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:00,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 346 Invalid, 29 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 38.96ms Time] [2021-11-13 02:41:00,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2021-11-13 02:41:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 751. [2021-11-13 02:41:01,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.2653333333333334) internal successors, (949), 750 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 949 transitions. [2021-11-13 02:41:01,853 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 949 transitions. Word has length 131 [2021-11-13 02:41:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:01,853 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 949 transitions. [2021-11-13 02:41:01,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:01,853 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 949 transitions. [2021-11-13 02:41:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 02:41:01,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:01,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:01,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-13 02:41:01,854 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:41:01,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:01,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1620773872, now seen corresponding path program 1 times [2021-11-13 02:41:01,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:41:01,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453481933] [2021-11-13 02:41:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:01,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:41:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:01,911 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:41:01,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453481933] [2021-11-13 02:41:01,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453481933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:01,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:01,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:41:01,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49284074] [2021-11-13 02:41:01,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:01,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:41:01,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:41:01,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:41:01,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:41:01,913 INFO L87 Difference]: Start difference. First operand 751 states and 949 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:04,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:04,219 INFO L93 Difference]: Finished difference Result 2035 states and 2615 transitions. [2021-11-13 02:41:04,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:41:04,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-13 02:41:04,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:04,221 INFO L225 Difference]: With dead ends: 2035 [2021-11-13 02:41:04,222 INFO L226 Difference]: Without dead ends: 1393 [2021-11-13 02:41:04,223 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 [2021-11-13 02:41:04,223 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 46 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.24ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:04,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 346 Invalid, 29 Unknown, 0 Unchecked, 0.76ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 32.24ms Time] [2021-11-13 02:41:04,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-11-13 02:41:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1327. [2021-11-13 02:41:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1326 states have (on average 1.2707390648567118) internal successors, (1685), 1326 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1685 transitions. [2021-11-13 02:41:06,575 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1685 transitions. Word has length 134 [2021-11-13 02:41:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:06,576 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1685 transitions. [2021-11-13 02:41:06,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:06,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1685 transitions. [2021-11-13 02:41:06,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-13 02:41:06,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:06,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:06,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-13 02:41:06,581 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:41:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash 31841943, now seen corresponding path program 1 times [2021-11-13 02:41:06,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:41:06,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977180136] [2021-11-13 02:41:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:06,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:41:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:06,662 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:41:06,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977180136] [2021-11-13 02:41:06,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977180136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:06,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:06,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:41:06,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153745826] [2021-11-13 02:41:06,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:06,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:41:06,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:41:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:41:06,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:41:06,666 INFO L87 Difference]: Start difference. First operand 1327 states and 1685 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:11,789 INFO L93 Difference]: Finished difference Result 3763 states and 4823 transitions. [2021-11-13 02:41:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:41:11,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-13 02:41:11,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:11,793 INFO L225 Difference]: With dead ends: 3763 [2021-11-13 02:41:11,794 INFO L226 Difference]: Without dead ends: 2545 [2021-11-13 02:41:11,795 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 [2021-11-13 02:41:11,796 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 36 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.35ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:11,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 346 Invalid, 30 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 42.35ms Time] [2021-11-13 02:41:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2021-11-13 02:41:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2415. [2021-11-13 02:41:16,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2414 states have (on average 1.268019884009942) internal successors, (3061), 2414 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 3061 transitions. [2021-11-13 02:41:16,784 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 3061 transitions. Word has length 137 [2021-11-13 02:41:16,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:16,785 INFO L470 AbstractCegarLoop]: Abstraction has 2415 states and 3061 transitions. [2021-11-13 02:41:16,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:16,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 3061 transitions. [2021-11-13 02:41:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-13 02:41:16,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:16,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:16,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-13 02:41:16,786 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:41:16,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:16,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1140416929, now seen corresponding path program 1 times [2021-11-13 02:41:16,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:41:16,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034492183] [2021-11-13 02:41:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:16,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:41:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:16,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:41:16,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034492183] [2021-11-13 02:41:16,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034492183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:16,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:16,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:41:16,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390868481] [2021-11-13 02:41:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:16,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:41:16,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:41:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:41:16,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:41:16,894 INFO L87 Difference]: Start difference. First operand 2415 states and 3061 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 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) [2021-11-13 02:41:31,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:31,902 INFO L93 Difference]: Finished difference Result 9666 states and 12290 transitions. [2021-11-13 02:41:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:41:31,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 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) Word has length 140 [2021-11-13 02:41:31,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:31,916 INFO L225 Difference]: With dead ends: 9666 [2021-11-13 02:41:31,916 INFO L226 Difference]: Without dead ends: 7360 [2021-11-13 02:41:31,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:41:31,921 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1167 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 209.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.20ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 256.22ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:31,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 2167 Invalid, 351 Unknown, 0 Unchecked, 8.20ms Time], IncrementalHoareTripleChecker [10 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 256.22ms Time] [2021-11-13 02:41:31,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2021-11-13 02:41:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 3309. [2021-11-13 02:41:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3308 states have (on average 1.253627569528416) internal successors, (4147), 3308 states have internal predecessors, (4147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:37,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4147 transitions. [2021-11-13 02:41:37,439 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4147 transitions. Word has length 140 [2021-11-13 02:41:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:37,439 INFO L470 AbstractCegarLoop]: Abstraction has 3309 states and 4147 transitions. [2021-11-13 02:41:37,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 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) [2021-11-13 02:41:37,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4147 transitions. [2021-11-13 02:41:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-13 02:41:37,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:37,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:37,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-13 02:41:37,441 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:41:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:37,441 INFO L85 PathProgramCache]: Analyzing trace with hash -567668542, now seen corresponding path program 1 times [2021-11-13 02:41:37,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:41:37,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511986684] [2021-11-13 02:41:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:37,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:41:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:37,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:41:37,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511986684] [2021-11-13 02:41:37,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511986684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:37,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:37,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:41:37,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543937403] [2021-11-13 02:41:37,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:37,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:41:37,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:41:37,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:41:37,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:41:37,494 INFO L87 Difference]: Start difference. First operand 3309 states and 4147 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:43,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:43,910 INFO L93 Difference]: Finished difference Result 6511 states and 8179 transitions. [2021-11-13 02:41:43,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:41:43,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-13 02:41:43,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:43,914 INFO L225 Difference]: With dead ends: 6511 [2021-11-13 02:41:43,915 INFO L226 Difference]: Without dead ends: 3311 [2021-11-13 02:41:43,919 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 [2021-11-13 02:41:43,920 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 36 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.86ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.16ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:43,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 278 Invalid, 41 Unknown, 0 Unchecked, 0.86ms Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 44.16ms Time] [2021-11-13 02:41:43,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-11-13 02:41:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3309. [2021-11-13 02:41:49,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3308 states have (on average 1.2533252720677146) internal successors, (4146), 3308 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4146 transitions. [2021-11-13 02:41:49,995 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4146 transitions. Word has length 142 [2021-11-13 02:41:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:49,995 INFO L470 AbstractCegarLoop]: Abstraction has 3309 states and 4146 transitions. [2021-11-13 02:41:49,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:49,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4146 transitions. [2021-11-13 02:41:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-13 02:41:49,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:49,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:49,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-13 02:41:49,997 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:41:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1397585046, now seen corresponding path program 1 times [2021-11-13 02:41:49,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:41:49,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468661521] [2021-11-13 02:41:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:49,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:41:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:50,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:41:50,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468661521] [2021-11-13 02:41:50,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468661521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:50,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:50,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:41:50,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996397003] [2021-11-13 02:41:50,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:50,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:41:50,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:41:50,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:41:50,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:41:50,046 INFO L87 Difference]: Start difference. First operand 3309 states and 4146 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:57,303 INFO L93 Difference]: Finished difference Result 7887 states and 9905 transitions. [2021-11-13 02:41:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:41:57,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-13 02:41:57,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:57,307 INFO L225 Difference]: With dead ends: 7887 [2021-11-13 02:41:57,308 INFO L226 Difference]: Without dead ends: 4687 [2021-11-13 02:41:57,310 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 [2021-11-13 02:41:57,310 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 94 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.89ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:57,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 266 Invalid, 30 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 35.89ms Time] [2021-11-13 02:41:57,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2021-11-13 02:42:04,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4685. [2021-11-13 02:42:04,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4684 states have (on average 1.247011101622545) internal successors, (5841), 4684 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:42:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 5841 transitions. [2021-11-13 02:42:04,361 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 5841 transitions. Word has length 142 [2021-11-13 02:42:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:04,361 INFO L470 AbstractCegarLoop]: Abstraction has 4685 states and 5841 transitions. [2021-11-13 02:42:04,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:42:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 5841 transitions. [2021-11-13 02:42:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-13 02:42:04,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:04,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:04,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-13 02:42:04,362 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:42:04,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:04,362 INFO L85 PathProgramCache]: Analyzing trace with hash -537646549, now seen corresponding path program 1 times [2021-11-13 02:42:04,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:42:04,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613337901] [2021-11-13 02:42:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:04,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:42:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:42:04,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:42:04,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613337901] [2021-11-13 02:42:04,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613337901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:42:04,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:42:04,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:42:04,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996454060] [2021-11-13 02:42:04,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:04,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:42:04,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:42:04,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:42:04,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:42:04,451 INFO L87 Difference]: Start difference. First operand 4685 states and 5841 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:42:16,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:16,935 INFO L93 Difference]: Finished difference Result 6558 states and 8134 transitions. [2021-11-13 02:42:16,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:42:16,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-13 02:42:16,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:16,942 INFO L225 Difference]: With dead ends: 6558 [2021-11-13 02:42:16,942 INFO L226 Difference]: Without dead ends: 6556 [2021-11-13 02:42:16,943 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 [2021-11-13 02:42:16,943 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 382 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.17ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.44ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:16,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 1114 Invalid, 158 Unknown, 0 Unchecked, 3.17ms Time], IncrementalHoareTripleChecker [12 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 119.44ms Time] [2021-11-13 02:42:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2021-11-13 02:42:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 4685. [2021-11-13 02:42:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4684 states have (on average 1.2333475661827498) internal successors, (5777), 4684 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:42:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 5777 transitions. [2021-11-13 02:42:24,420 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 5777 transitions. Word has length 143 [2021-11-13 02:42:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:24,420 INFO L470 AbstractCegarLoop]: Abstraction has 4685 states and 5777 transitions. [2021-11-13 02:42:24,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:42:24,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 5777 transitions. [2021-11-13 02:42:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-13 02:42:24,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:24,422 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:24,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-13 02:42:24,422 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:42:24,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:24,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1175413227, now seen corresponding path program 1 times [2021-11-13 02:42:24,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:42:24,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463952522] [2021-11-13 02:42:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:24,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:42:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 02:42:24,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:42:24,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463952522] [2021-11-13 02:42:24,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463952522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:42:24,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:42:24,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:42:24,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782679209] [2021-11-13 02:42:24,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:24,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:42:24,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:42:24,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:42:24,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:42:24,550 INFO L87 Difference]: Start difference. First operand 4685 states and 5777 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:42:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:37,050 INFO L93 Difference]: Finished difference Result 11803 states and 14579 transitions. [2021-11-13 02:42:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:42:37,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-13 02:42:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:37,065 INFO L225 Difference]: With dead ends: 11803 [2021-11-13 02:42:37,065 INFO L226 Difference]: Without dead ends: 7221 [2021-11-13 02:42:37,072 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 [2021-11-13 02:42:37,073 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 479 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 201.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 246.96ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:37,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 509 Invalid, 456 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [9 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 246.96ms Time] [2021-11-13 02:42:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7221 states. [2021-11-13 02:42:46,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7221 to 4685. [2021-11-13 02:42:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4684 states have (on average 1.233134073441503) internal successors, (5776), 4684 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:42:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 5776 transitions. [2021-11-13 02:42:46,188 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 5776 transitions. Word has length 164 [2021-11-13 02:42:46,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:46,188 INFO L470 AbstractCegarLoop]: Abstraction has 4685 states and 5776 transitions. [2021-11-13 02:42:46,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:42:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 5776 transitions. [2021-11-13 02:42:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-13 02:42:46,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:46,190 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:46,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-13 02:42:46,191 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:42:46,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:46,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1938124130, now seen corresponding path program 1 times [2021-11-13 02:42:46,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:42:46,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943036906] [2021-11-13 02:42:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:46,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:42:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 02:42:48,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:42:48,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943036906] [2021-11-13 02:42:48,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943036906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:42:48,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:42:48,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-13 02:42:48,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902135785] [2021-11-13 02:42:48,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:48,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 02:42:48,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:42:48,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 02:42:48,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2021-11-13 02:42:48,069 INFO L87 Difference]: Start difference. First operand 4685 states and 5776 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:43:18,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:18,157 INFO L93 Difference]: Finished difference Result 18122 states and 22438 transitions. [2021-11-13 02:43:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 02:43:18,158 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-13 02:43:18,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:18,181 INFO L225 Difference]: With dead ends: 18122 [2021-11-13 02:43:18,181 INFO L226 Difference]: Without dead ends: 13539 [2021-11-13 02:43:18,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=439, Invalid=2753, Unknown=0, NotChecked=0, Total=3192 [2021-11-13 02:43:18,187 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1848 mSDsluCounter, 10985 mSDsCounter, 0 mSdLazyCounter, 5567 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3281.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 11315 SdHoareTripleChecker+Invalid, 5621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.05ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3801.63ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:18,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1848 Valid, 11315 Invalid, 5621 Unknown, 0 Unchecked, 38.05ms Time], IncrementalHoareTripleChecker [54 Valid, 5567 Invalid, 0 Unknown, 0 Unchecked, 3801.63ms Time] [2021-11-13 02:43:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13539 states. [2021-11-13 02:43:25,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13539 to 4710. [2021-11-13 02:43:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4710 states, 4709 states have (on average 1.232745805903589) internal successors, (5805), 4709 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:43:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 5805 transitions. [2021-11-13 02:43:25,901 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 5805 transitions. Word has length 166 [2021-11-13 02:43:25,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:25,901 INFO L470 AbstractCegarLoop]: Abstraction has 4710 states and 5805 transitions. [2021-11-13 02:43:25,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:43:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 5805 transitions. [2021-11-13 02:43:25,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-13 02:43:25,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:25,903 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:25,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-13 02:43:25,903 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 02:43:25,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:25,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1010050021, now seen corresponding path program 1 times [2021-11-13 02:43:25,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:43:25,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085146053] [2021-11-13 02:43:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:25,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:43:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:43:36,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:43:36,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085146053] [2021-11-13 02:43:36,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085146053] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:43:36,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537536937] [2021-11-13 02:43:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:36,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:43:36,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:43:36,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:43:36,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79dc5292-501f-4b9f-bb8a-e5800e409b19/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 02:43:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:36,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-13 02:43:36,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:31,328 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:44:31,329 INFO L328 TraceCheckSpWp]: Computing backward predicates...