./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7 --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 61079a62c86de0622c6f0d8d69ab5d3bd5c88209c75f4f3a60aa83a2a40500fd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:00:20,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:00:20,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:00:20,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:00:20,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:00:20,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:00:20,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:00:20,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:00:20,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:00:20,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:00:20,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:00:20,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:00:20,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:00:20,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:00:20,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:00:20,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:00:20,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:00:20,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:00:20,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:00:20,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:00:20,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:00:20,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:00:20,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:00:20,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:00:20,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:00:20,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:00:20,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:00:20,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:00:20,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:00:20,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:00:20,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:00:20,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:00:20,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:00:20,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:00:20,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:00:20,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:00:20,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:00:20,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:00:20,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:00:20,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:00:20,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:00:20,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:00:20,693 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:00:20,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:00:20,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:00:20,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:00:20,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:00:20,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:00:20,700 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:00:20,700 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:00:20,701 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:00:20,701 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:00:20,702 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:00:20,703 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:00:20,703 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:00:20,703 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:00:20,703 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:00:20,704 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:00:20,704 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:00:20,704 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:00:20,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:00:20,705 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:00:20,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:00:20,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:00:20,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:00:20,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:00:20,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:00:20,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:00:20,709 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:00:20,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:00:20,710 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:00:20,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:00:20,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:00:20,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:00:20,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:00:20,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:00:20,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:00:20,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:00:20,712 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:00:20,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:00:20,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:00:20,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:00:20,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:00:20,713 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_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61079a62c86de0622c6f0d8d69ab5d3bd5c88209c75f4f3a60aa83a2a40500fd [2021-11-25 19:00:21,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:00:21,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:00:21,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:00:21,106 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:00:21,107 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:00:21,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 19:00:21,191 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/data/6d890d2c0/53a5e45de76a4c7a845f7ea383ee9f1a/FLAGdcbfc4cd1 [2021-11-25 19:00:22,234 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:00:22,235 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 19:00:22,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/data/6d890d2c0/53a5e45de76a4c7a845f7ea383ee9f1a/FLAGdcbfc4cd1 [2021-11-25 19:00:22,561 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/data/6d890d2c0/53a5e45de76a4c7a845f7ea383ee9f1a [2021-11-25 19:00:22,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:00:22,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:00:22,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:00:22,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:00:22,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:00:22,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:00:22" (1/1) ... [2021-11-25 19:00:22,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6990c334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:22, skipping insertion in model container [2021-11-25 19:00:22,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:00:22" (1/1) ... [2021-11-25 19:00:22,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:00:22,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:00:24,011 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82693,82706] [2021-11-25 19:00:24,150 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[113477,113490] [2021-11-25 19:00:24,307 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[165794,165807] [2021-11-25 19:00:24,478 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[197365,197378] [2021-11-25 19:00:24,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[205886,205899] [2021-11-25 19:00:24,524 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[207836,207849] [2021-11-25 19:00:24,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[224171,224184] [2021-11-25 19:00:24,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231245,231258] [2021-11-25 19:00:24,690 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[259571,259584] [2021-11-25 19:00:24,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[287337,287350] [2021-11-25 19:00:25,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[370939,370952] [2021-11-25 19:00:25,106 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[389606,389619] [2021-11-25 19:00:25,171 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[408649,408662] [2021-11-25 19:00:25,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[415665,415678] [2021-11-25 19:00:25,210 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[419162,419175] [2021-11-25 19:00:25,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[433807,433820] [2021-11-25 19:00:25,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[448287,448300] [2021-11-25 19:00:25,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[480365,480378] [2021-11-25 19:00:25,707 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[569807,569820] [2021-11-25 19:00:25,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:00:25,971 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:00:26,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82693,82706] [2021-11-25 19:00:26,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[113477,113490] [2021-11-25 19:00:26,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[165794,165807] [2021-11-25 19:00:26,635 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[197365,197378] [2021-11-25 19:00:26,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[205886,205899] [2021-11-25 19:00:26,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[207836,207849] [2021-11-25 19:00:26,708 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[224171,224184] [2021-11-25 19:00:26,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231245,231258] [2021-11-25 19:00:26,812 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[259571,259584] [2021-11-25 19:00:26,900 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[287337,287350] [2021-11-25 19:00:27,133 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[370939,370952] [2021-11-25 19:00:27,187 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[389606,389619] [2021-11-25 19:00:27,248 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[408649,408662] [2021-11-25 19:00:27,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[415665,415678] [2021-11-25 19:00:27,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[419162,419175] [2021-11-25 19:00:27,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[433807,433820] [2021-11-25 19:00:27,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[448287,448300] [2021-11-25 19:00:27,448 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[480365,480378] [2021-11-25 19:00:27,695 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[569807,569820] [2021-11-25 19:00:27,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:00:27,919 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:00:27,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27 WrapperNode [2021-11-25 19:00:27,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:00:27,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:00:27,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:00:27,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:00:27,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27" (1/1) ... [2021-11-25 19:00:28,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27" (1/1) ... [2021-11-25 19:00:28,387 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28483 [2021-11-25 19:00:28,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:00:28,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:00:28,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:00:28,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:00:28,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27" (1/1) ... [2021-11-25 19:00:28,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27" (1/1) ... [2021-11-25 19:00:28,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27" (1/1) ... [2021-11-25 19:00:28,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27" (1/1) ... [2021-11-25 19:00:28,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27" (1/1) ... [2021-11-25 19:00:28,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27" (1/1) ... [2021-11-25 19:00:28,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27" (1/1) ... [2021-11-25 19:00:29,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:00:29,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:00:29,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:00:29,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:00:29,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27" (1/1) ... [2021-11-25 19:00:29,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:00:29,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:29,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:00:29,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d365633-b048-4677-8019-f3f5ad3fc66f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:00:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:00:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:00:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:00:29,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:00:29,941 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:00:29,944 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:00:41,295 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:00:44,204 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:00:44,204 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:00:44,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:00:44 BoogieIcfgContainer [2021-11-25 19:00:44,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:00:44,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:00:44,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:00:44,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:00:44,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:00:22" (1/3) ... [2021-11-25 19:00:44,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27843bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:00:44, skipping insertion in model container [2021-11-25 19:00:44,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:27" (2/3) ... [2021-11-25 19:00:44,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27843bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:00:44, skipping insertion in model container [2021-11-25 19:00:44,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:00:44" (3/3) ... [2021-11-25 19:00:44,224 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 19:00:44,230 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:00:44,230 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-25 19:00:44,322 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:00:44,333 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 [2021-11-25 19:00:44,334 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-25 19:00:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 5974 states, 5954 states have (on average 1.8098757138058448) internal successors, (10776), 5973 states have internal predecessors, (10776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:44,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 19:00:44,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:44,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:44,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:00:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1586848728, now seen corresponding path program 1 times [2021-11-25 19:00:44,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:44,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546392218] [2021-11-25 19:00:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:44,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:45,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:45,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546392218] [2021-11-25 19:00:45,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546392218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:45,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:45,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:00:45,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345325960] [2021-11-25 19:00:45,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:45,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:00:45,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:45,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:00:45,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:00:45,289 INFO L87 Difference]: Start difference. First operand has 5974 states, 5954 states have (on average 1.8098757138058448) internal successors, (10776), 5973 states have internal predecessors, (10776), 0 states have call successors, (0), 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 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:51,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:51,060 INFO L93 Difference]: Finished difference Result 8746 states and 15572 transitions. [2021-11-25 19:00:51,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:00:51,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-25 19:00:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:51,124 INFO L225 Difference]: With dead ends: 8746 [2021-11-25 19:00:51,125 INFO L226 Difference]: Without dead ends: 5503 [2021-11-25 19:00:51,141 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 [2021-11-25 19:00:51,147 INFO L933 BasicCegarLoop]: 4488 mSDtfsCounter, 27705 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 4607 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27705 SdHoareTripleChecker+Valid, 5291 SdHoareTripleChecker+Invalid, 4710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:51,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27705 Valid, 5291 Invalid, 4710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 4607 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-25 19:00:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2021-11-25 19:00:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 5473. [2021-11-25 19:00:51,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5473 states, 5454 states have (on average 1.3094976164283094) internal successors, (7142), 5472 states have internal predecessors, (7142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 7142 transitions. [2021-11-25 19:00:51,501 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 7142 transitions. Word has length 76 [2021-11-25 19:00:51,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:51,502 INFO L470 AbstractCegarLoop]: Abstraction has 5473 states and 7142 transitions. [2021-11-25 19:00:51,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 7142 transitions. [2021-11-25 19:00:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-25 19:00:51,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:51,525 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] [2021-11-25 19:00:51,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:00:51,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:00:51,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:51,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1151184511, now seen corresponding path program 1 times [2021-11-25 19:00:51,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:51,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278370765] [2021-11-25 19:00:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:51,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:52,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:52,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278370765] [2021-11-25 19:00:52,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278370765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:52,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:52,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:00:52,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384664491] [2021-11-25 19:00:52,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:52,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:00:52,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:00:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:00:52,042 INFO L87 Difference]: Start difference. First operand 5473 states and 7142 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:00,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:00,637 INFO L93 Difference]: Finished difference Result 5903 states and 7698 transitions. [2021-11-25 19:01:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:01:00,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-25 19:01:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:00,681 INFO L225 Difference]: With dead ends: 5903 [2021-11-25 19:01:00,681 INFO L226 Difference]: Without dead ends: 5898 [2021-11-25 19:01:00,684 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 [2021-11-25 19:01:00,685 INFO L933 BasicCegarLoop]: 2762 mSDtfsCounter, 19456 mSDsluCounter, 9198 mSDsCounter, 0 mSdLazyCounter, 14778 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19456 SdHoareTripleChecker+Valid, 11951 SdHoareTripleChecker+Invalid, 15129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 14778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:00,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19456 Valid, 11951 Invalid, 15129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [351 Valid, 14778 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-25 19:01:00,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5898 states. [2021-11-25 19:01:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5898 to 5473. [2021-11-25 19:01:00,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5473 states, 5454 states have (on average 1.3093142647598093) internal successors, (7141), 5472 states have internal predecessors, (7141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 7141 transitions. [2021-11-25 19:01:00,943 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 7141 transitions. Word has length 77 [2021-11-25 19:01:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:00,943 INFO L470 AbstractCegarLoop]: Abstraction has 5473 states and 7141 transitions. [2021-11-25 19:01:00,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 7141 transitions. [2021-11-25 19:01:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-25 19:01:00,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:00,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:00,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:01:00,959 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:01:00,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1331787270, now seen corresponding path program 1 times [2021-11-25 19:01:00,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:00,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907625629] [2021-11-25 19:01:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:00,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:01,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:01,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907625629] [2021-11-25 19:01:01,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907625629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:01,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:01,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:01:01,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455557135] [2021-11-25 19:01:01,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:01,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:01:01,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:01:01,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:01:01,162 INFO L87 Difference]: Start difference. First operand 5473 states and 7141 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:04,408 INFO L93 Difference]: Finished difference Result 8988 states and 11707 transitions. [2021-11-25 19:01:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:01:04,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-25 19:01:04,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:04,440 INFO L225 Difference]: With dead ends: 8988 [2021-11-25 19:01:04,440 INFO L226 Difference]: Without dead ends: 5638 [2021-11-25 19:01:04,446 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 [2021-11-25 19:01:04,447 INFO L933 BasicCegarLoop]: 2163 mSDtfsCounter, 16497 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16497 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 3433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:04,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16497 Valid, 2761 Invalid, 3433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3341 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 19:01:04,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5638 states. [2021-11-25 19:01:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5638 to 5609. [2021-11-25 19:01:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5609 states, 5590 states have (on average 1.3178890876565295) internal successors, (7367), 5608 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5609 states to 5609 states and 7367 transitions. [2021-11-25 19:01:04,702 INFO L78 Accepts]: Start accepts. Automaton has 5609 states and 7367 transitions. Word has length 77 [2021-11-25 19:01:04,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:04,704 INFO L470 AbstractCegarLoop]: Abstraction has 5609 states and 7367 transitions. [2021-11-25 19:01:04,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:04,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5609 states and 7367 transitions. [2021-11-25 19:01:04,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 19:01:04,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:04,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:04,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:01:04,721 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:01:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1639149933, now seen corresponding path program 1 times [2021-11-25 19:01:04,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:04,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476879639] [2021-11-25 19:01:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:04,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:04,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:04,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476879639] [2021-11-25 19:01:04,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476879639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:04,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:04,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:01:04,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075752419] [2021-11-25 19:01:04,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:04,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:01:04,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:04,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:01:04,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:01:04,878 INFO L87 Difference]: Start difference. First operand 5609 states and 7367 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:07,673 INFO L93 Difference]: Finished difference Result 10736 states and 14137 transitions. [2021-11-25 19:01:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:01:07,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 19:01:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:07,706 INFO L225 Difference]: With dead ends: 10736 [2021-11-25 19:01:07,706 INFO L226 Difference]: Without dead ends: 7330 [2021-11-25 19:01:07,713 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 [2021-11-25 19:01:07,714 INFO L933 BasicCegarLoop]: 2037 mSDtfsCounter, 15703 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15703 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:07,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15703 Valid, 2612 Invalid, 3417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 19:01:07,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7330 states. [2021-11-25 19:01:08,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7330 to 7304. [2021-11-25 19:01:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7304 states, 7285 states have (on average 1.3013040494166095) internal successors, (9480), 7303 states have internal predecessors, (9480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 9480 transitions. [2021-11-25 19:01:08,052 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 9480 transitions. Word has length 78 [2021-11-25 19:01:08,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:08,053 INFO L470 AbstractCegarLoop]: Abstraction has 7304 states and 9480 transitions. [2021-11-25 19:01:08,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:08,058 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 9480 transitions. [2021-11-25 19:01:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 19:01:08,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:08,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:08,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:01:08,072 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:01:08,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash 865086873, now seen corresponding path program 1 times [2021-11-25 19:01:08,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:08,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689825138] [2021-11-25 19:01:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:08,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:08,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:08,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689825138] [2021-11-25 19:01:08,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689825138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:08,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:08,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 19:01:08,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865342046] [2021-11-25 19:01:08,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:08,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:01:08,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:08,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:01:08,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:01:08,722 INFO L87 Difference]: Start difference. First operand 7304 states and 9480 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:14,626 INFO L93 Difference]: Finished difference Result 13416 states and 17992 transitions. [2021-11-25 19:01:14,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-25 19:01:14,626 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 19:01:14,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:14,670 INFO L225 Difference]: With dead ends: 13416 [2021-11-25 19:01:14,670 INFO L226 Difference]: Without dead ends: 13408 [2021-11-25 19:01:14,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=293, Invalid=1039, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 19:01:14,675 INFO L933 BasicCegarLoop]: 4798 mSDtfsCounter, 27619 mSDsluCounter, 30171 mSDsCounter, 0 mSdLazyCounter, 4826 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27619 SdHoareTripleChecker+Valid, 34465 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 4826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:14,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27619 Valid, 34465 Invalid, 5528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [702 Valid, 4826 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 19:01:14,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13408 states. [2021-11-25 19:01:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13408 to 7296. [2021-11-25 19:01:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7296 states, 7278 states have (on average 1.3014564440780434) internal successors, (9472), 7295 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:15,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 9472 transitions. [2021-11-25 19:01:15,136 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 9472 transitions. Word has length 78 [2021-11-25 19:01:15,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:15,136 INFO L470 AbstractCegarLoop]: Abstraction has 7296 states and 9472 transitions. [2021-11-25 19:01:15,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:15,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 9472 transitions. [2021-11-25 19:01:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 19:01:15,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:15,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:15,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:01:15,151 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:01:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1161754745, now seen corresponding path program 1 times [2021-11-25 19:01:15,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:15,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495779240] [2021-11-25 19:01:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:15,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:15,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:15,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495779240] [2021-11-25 19:01:15,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495779240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:15,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:15,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:01:15,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645379441] [2021-11-25 19:01:15,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:15,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:01:15,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:15,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:01:15,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:01:15,380 INFO L87 Difference]: Start difference. First operand 7296 states and 9472 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:24,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:24,092 INFO L93 Difference]: Finished difference Result 11146 states and 14782 transitions. [2021-11-25 19:01:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 19:01:24,094 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-25 19:01:24,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:24,117 INFO L225 Difference]: With dead ends: 11146 [2021-11-25 19:01:24,117 INFO L226 Difference]: Without dead ends: 10483 [2021-11-25 19:01:24,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2021-11-25 19:01:24,124 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 16683 mSDsluCounter, 9207 mSDsCounter, 0 mSdLazyCounter, 14574 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16683 SdHoareTripleChecker+Valid, 11380 SdHoareTripleChecker+Invalid, 14711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 14574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:24,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16683 Valid, 11380 Invalid, 14711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 14574 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-25 19:01:24,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10483 states. [2021-11-25 19:01:24,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10483 to 7303. [2021-11-25 19:01:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7303 states, 7285 states have (on average 1.3011667810569663) internal successors, (9479), 7302 states have internal predecessors, (9479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 9479 transitions. [2021-11-25 19:01:24,614 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 9479 transitions. Word has length 79 [2021-11-25 19:01:24,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:24,614 INFO L470 AbstractCegarLoop]: Abstraction has 7303 states and 9479 transitions. [2021-11-25 19:01:24,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:24,615 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 9479 transitions. [2021-11-25 19:01:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 19:01:24,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:24,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:24,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:01:24,627 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:01:24,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1561427822, now seen corresponding path program 1 times [2021-11-25 19:01:24,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:24,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878994663] [2021-11-25 19:01:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:24,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:24,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:24,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878994663] [2021-11-25 19:01:24,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878994663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:24,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:24,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:01:24,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470370393] [2021-11-25 19:01:24,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:24,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:01:24,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:24,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:01:24,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:01:24,728 INFO L87 Difference]: Start difference. First operand 7303 states and 9479 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:28,077 INFO L93 Difference]: Finished difference Result 13926 states and 18108 transitions. [2021-11-25 19:01:28,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:01:28,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-25 19:01:28,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:28,100 INFO L225 Difference]: With dead ends: 13926 [2021-11-25 19:01:28,100 INFO L226 Difference]: Without dead ends: 9454 [2021-11-25 19:01:28,109 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 [2021-11-25 19:01:28,110 INFO L933 BasicCegarLoop]: 1817 mSDtfsCounter, 14298 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14298 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:28,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14298 Valid, 2440 Invalid, 2970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 19:01:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9454 states. [2021-11-25 19:01:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9454 to 9434. [2021-11-25 19:01:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9434 states, 9416 states have (on average 1.2998088360237894) internal successors, (12239), 9433 states have internal predecessors, (12239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9434 states to 9434 states and 12239 transitions. [2021-11-25 19:01:28,776 INFO L78 Accepts]: Start accepts. Automaton has 9434 states and 12239 transitions. Word has length 79 [2021-11-25 19:01:28,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:28,777 INFO L470 AbstractCegarLoop]: Abstraction has 9434 states and 12239 transitions. [2021-11-25 19:01:28,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 9434 states and 12239 transitions. [2021-11-25 19:01:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 19:01:28,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:28,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:28,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:01:28,791 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:01:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:28,792 INFO L85 PathProgramCache]: Analyzing trace with hash -615366141, now seen corresponding path program 1 times [2021-11-25 19:01:28,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:28,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080983315] [2021-11-25 19:01:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:28,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:28,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:28,888 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:28,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080983315] [2021-11-25 19:01:28,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080983315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:28,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:28,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:01:28,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576596208] [2021-11-25 19:01:28,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:28,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:01:28,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:01:28,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:01:28,890 INFO L87 Difference]: Start difference. First operand 9434 states and 12239 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:32,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:32,113 INFO L93 Difference]: Finished difference Result 20848 states and 27364 transitions. [2021-11-25 19:01:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:01:32,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-25 19:01:32,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:32,132 INFO L225 Difference]: With dead ends: 20848 [2021-11-25 19:01:32,132 INFO L226 Difference]: Without dead ends: 13703 [2021-11-25 19:01:32,142 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 [2021-11-25 19:01:32,143 INFO L933 BasicCegarLoop]: 1882 mSDtfsCounter, 14461 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14461 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:32,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14461 Valid, 2612 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2810 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 19:01:32,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13703 states. [2021-11-25 19:01:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13703 to 13679. [2021-11-25 19:01:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13679 states, 13661 states have (on average 1.2976356050069542) internal successors, (17727), 13678 states have internal predecessors, (17727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13679 states to 13679 states and 17727 transitions. [2021-11-25 19:01:33,243 INFO L78 Accepts]: Start accepts. Automaton has 13679 states and 17727 transitions. Word has length 79 [2021-11-25 19:01:33,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:33,243 INFO L470 AbstractCegarLoop]: Abstraction has 13679 states and 17727 transitions. [2021-11-25 19:01:33,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 13679 states and 17727 transitions. [2021-11-25 19:01:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 19:01:33,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:33,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:33,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:01:33,264 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:01:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1945118073, now seen corresponding path program 1 times [2021-11-25 19:01:33,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:33,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849774101] [2021-11-25 19:01:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:33,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:33,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:33,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849774101] [2021-11-25 19:01:33,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849774101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:33,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:33,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:01:33,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942430332] [2021-11-25 19:01:33,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:33,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:01:33,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:33,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:01:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:01:33,366 INFO L87 Difference]: Start difference. First operand 13679 states and 17727 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:34,968 INFO L93 Difference]: Finished difference Result 26894 states and 35051 transitions. [2021-11-25 19:01:34,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:01:34,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 19:01:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:34,986 INFO L225 Difference]: With dead ends: 26894 [2021-11-25 19:01:34,986 INFO L226 Difference]: Without dead ends: 16566 [2021-11-25 19:01:34,998 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 [2021-11-25 19:01:34,998 INFO L933 BasicCegarLoop]: 3584 mSDtfsCounter, 3646 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3646 SdHoareTripleChecker+Valid, 4526 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:34,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3646 Valid, 4526 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:01:35,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16566 states. [2021-11-25 19:01:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16566 to 16539. [2021-11-25 19:01:36,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16539 states, 16521 states have (on average 1.2895103201985352) internal successors, (21304), 16538 states have internal predecessors, (21304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16539 states to 16539 states and 21304 transitions. [2021-11-25 19:01:36,198 INFO L78 Accepts]: Start accepts. Automaton has 16539 states and 21304 transitions. Word has length 80 [2021-11-25 19:01:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:36,198 INFO L470 AbstractCegarLoop]: Abstraction has 16539 states and 21304 transitions. [2021-11-25 19:01:36,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 16539 states and 21304 transitions. [2021-11-25 19:01:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 19:01:36,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:36,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:36,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:01:36,217 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:01:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:36,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1507795412, now seen corresponding path program 1 times [2021-11-25 19:01:36,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:36,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054415721] [2021-11-25 19:01:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:36,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:36,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:36,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:36,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054415721] [2021-11-25 19:01:36,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054415721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:36,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:36,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 19:01:36,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215020469] [2021-11-25 19:01:36,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:36,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:01:36,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:36,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:01:36,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:01:36,583 INFO L87 Difference]: Start difference. First operand 16539 states and 21304 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:41,911 INFO L93 Difference]: Finished difference Result 24893 states and 32981 transitions. [2021-11-25 19:01:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:01:41,911 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 19:01:41,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:41,942 INFO L225 Difference]: With dead ends: 24893 [2021-11-25 19:01:41,942 INFO L226 Difference]: Without dead ends: 24889 [2021-11-25 19:01:41,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:01:41,947 INFO L933 BasicCegarLoop]: 3690 mSDtfsCounter, 18395 mSDsluCounter, 13691 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18395 SdHoareTripleChecker+Valid, 17183 SdHoareTripleChecker+Invalid, 3524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:41,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18395 Valid, 17183 Invalid, 3524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 3079 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 19:01:41,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24889 states. [2021-11-25 19:01:43,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24889 to 16535. [2021-11-25 19:01:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16535 states, 16518 states have (on average 1.289502361060661) internal successors, (21300), 16534 states have internal predecessors, (21300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16535 states to 16535 states and 21300 transitions. [2021-11-25 19:01:43,567 INFO L78 Accepts]: Start accepts. Automaton has 16535 states and 21300 transitions. Word has length 80 [2021-11-25 19:01:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:43,567 INFO L470 AbstractCegarLoop]: Abstraction has 16535 states and 21300 transitions. [2021-11-25 19:01:43,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 16535 states and 21300 transitions. [2021-11-25 19:01:43,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 19:01:43,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:43,580 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] [2021-11-25 19:01:43,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:01:43,580 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:01:43,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:43,581 INFO L85 PathProgramCache]: Analyzing trace with hash 465400969, now seen corresponding path program 1 times [2021-11-25 19:01:43,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:43,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050078911] [2021-11-25 19:01:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:43,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:43,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:43,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050078911] [2021-11-25 19:01:43,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050078911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:43,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:43,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:01:43,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820942706] [2021-11-25 19:01:43,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:43,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:01:43,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:43,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:01:43,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:01:43,772 INFO L87 Difference]: Start difference. First operand 16535 states and 21300 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:50,420 INFO L93 Difference]: Finished difference Result 20776 states and 26833 transitions. [2021-11-25 19:01:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:01:50,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 19:01:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:50,446 INFO L225 Difference]: With dead ends: 20776 [2021-11-25 19:01:50,446 INFO L226 Difference]: Without dead ends: 20768 [2021-11-25 19:01:50,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:01:50,452 INFO L933 BasicCegarLoop]: 1836 mSDtfsCounter, 8147 mSDsluCounter, 6880 mSDsCounter, 0 mSdLazyCounter, 9827 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8147 SdHoareTripleChecker+Valid, 8710 SdHoareTripleChecker+Invalid, 10064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 9827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:50,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8147 Valid, 8710 Invalid, 10064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 9827 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-25 19:01:50,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20768 states. [2021-11-25 19:01:51,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20768 to 16535. [2021-11-25 19:01:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16535 states, 16518 states have (on average 1.28944182104371) internal successors, (21299), 16534 states have internal predecessors, (21299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16535 states to 16535 states and 21299 transitions. [2021-11-25 19:01:52,032 INFO L78 Accepts]: Start accepts. Automaton has 16535 states and 21299 transitions. Word has length 80 [2021-11-25 19:01:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:52,032 INFO L470 AbstractCegarLoop]: Abstraction has 16535 states and 21299 transitions. [2021-11-25 19:01:52,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 16535 states and 21299 transitions. [2021-11-25 19:01:52,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 19:01:52,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:52,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:52,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:01:52,048 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:01:52,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:52,049 INFO L85 PathProgramCache]: Analyzing trace with hash -195949566, now seen corresponding path program 1 times [2021-11-25 19:01:52,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:52,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395430560] [2021-11-25 19:01:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:52,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:52,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:52,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395430560] [2021-11-25 19:01:52,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395430560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:52,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:52,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:01:52,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398911307] [2021-11-25 19:01:52,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:52,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:01:52,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:52,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:01:52,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:01:52,253 INFO L87 Difference]: Start difference. First operand 16535 states and 21299 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:59,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:59,954 INFO L93 Difference]: Finished difference Result 21254 states and 27994 transitions. [2021-11-25 19:01:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:01:59,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-25 19:01:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:59,974 INFO L225 Difference]: With dead ends: 21254 [2021-11-25 19:01:59,975 INFO L226 Difference]: Without dead ends: 17991 [2021-11-25 19:01:59,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:01:59,982 INFO L933 BasicCegarLoop]: 1795 mSDtfsCounter, 13629 mSDsluCounter, 7551 mSDsCounter, 0 mSdLazyCounter, 11344 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13629 SdHoareTripleChecker+Valid, 9336 SdHoareTripleChecker+Invalid, 11480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 11344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:59,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13629 Valid, 9336 Invalid, 11480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 11344 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-25 19:01:59,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17991 states. [2021-11-25 19:02:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17991 to 16288. [2021-11-25 19:02:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16288 states, 16271 states have (on average 1.290148116280499) internal successors, (20992), 16287 states have internal predecessors, (20992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:01,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16288 states to 16288 states and 20992 transitions. [2021-11-25 19:02:01,431 INFO L78 Accepts]: Start accepts. Automaton has 16288 states and 20992 transitions. Word has length 81 [2021-11-25 19:02:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:01,431 INFO L470 AbstractCegarLoop]: Abstraction has 16288 states and 20992 transitions. [2021-11-25 19:02:01,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:01,431 INFO L276 IsEmpty]: Start isEmpty. Operand 16288 states and 20992 transitions. [2021-11-25 19:02:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 19:02:01,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:01,440 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] [2021-11-25 19:02:01,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:02:01,441 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:02:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash 544903916, now seen corresponding path program 1 times [2021-11-25 19:02:01,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:01,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459087266] [2021-11-25 19:02:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:01,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:01,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:01,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459087266] [2021-11-25 19:02:01,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459087266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:01,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:01,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 19:02:01,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393608677] [2021-11-25 19:02:01,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:01,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:02:01,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:01,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:02:01,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:02:01,806 INFO L87 Difference]: Start difference. First operand 16288 states and 20992 transitions. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:08,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:08,109 INFO L93 Difference]: Finished difference Result 29902 states and 39974 transitions. [2021-11-25 19:02:08,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:02:08,110 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-25 19:02:08,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:08,145 INFO L225 Difference]: With dead ends: 29902 [2021-11-25 19:02:08,145 INFO L226 Difference]: Without dead ends: 27835 [2021-11-25 19:02:08,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2021-11-25 19:02:08,156 INFO L933 BasicCegarLoop]: 3864 mSDtfsCounter, 21004 mSDsluCounter, 18615 mSDsCounter, 0 mSdLazyCounter, 2690 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21004 SdHoareTripleChecker+Valid, 22339 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:08,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21004 Valid, 22339 Invalid, 3136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2690 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 19:02:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27835 states. [2021-11-25 19:02:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27835 to 16256. [2021-11-25 19:02:10,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16256 states, 16239 states have (on average 1.29028881088737) internal successors, (20953), 16255 states have internal predecessors, (20953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16256 states to 16256 states and 20953 transitions. [2021-11-25 19:02:10,160 INFO L78 Accepts]: Start accepts. Automaton has 16256 states and 20953 transitions. Word has length 81 [2021-11-25 19:02:10,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:10,160 INFO L470 AbstractCegarLoop]: Abstraction has 16256 states and 20953 transitions. [2021-11-25 19:02:10,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:10,161 INFO L276 IsEmpty]: Start isEmpty. Operand 16256 states and 20953 transitions. [2021-11-25 19:02:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 19:02:10,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:10,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:10,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:02:10,170 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:02:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:10,171 INFO L85 PathProgramCache]: Analyzing trace with hash -15895603, now seen corresponding path program 1 times [2021-11-25 19:02:10,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:10,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132603704] [2021-11-25 19:02:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:10,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:10,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:10,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132603704] [2021-11-25 19:02:10,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132603704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:10,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:10,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:02:10,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443485545] [2021-11-25 19:02:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:10,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:02:10,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:10,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:02:10,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:02:10,358 INFO L87 Difference]: Start difference. First operand 16256 states and 20953 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:19,689 INFO L93 Difference]: Finished difference Result 30387 states and 40423 transitions. [2021-11-25 19:02:19,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 19:02:19,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-25 19:02:19,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:19,822 INFO L225 Difference]: With dead ends: 30387 [2021-11-25 19:02:19,823 INFO L226 Difference]: Without dead ends: 27328 [2021-11-25 19:02:19,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:02:19,831 INFO L933 BasicCegarLoop]: 2013 mSDtfsCounter, 12246 mSDsluCounter, 7193 mSDsCounter, 0 mSdLazyCounter, 10046 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12246 SdHoareTripleChecker+Valid, 9196 SdHoareTripleChecker+Invalid, 10367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 10046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:19,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12246 Valid, 9196 Invalid, 10367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 10046 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-25 19:02:19,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27328 states. [2021-11-25 19:02:22,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27328 to 16211. [2021-11-25 19:02:22,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2902309497344695) internal successors, (20894), 16210 states have internal predecessors, (20894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:22,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20894 transitions. [2021-11-25 19:02:22,220 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20894 transitions. Word has length 81 [2021-11-25 19:02:22,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:22,221 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20894 transitions. [2021-11-25 19:02:22,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:22,221 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20894 transitions. [2021-11-25 19:02:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 19:02:22,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:22,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:22,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:02:22,232 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:02:22,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:22,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1253372965, now seen corresponding path program 1 times [2021-11-25 19:02:22,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:22,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418497937] [2021-11-25 19:02:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:22,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:22,420 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:22,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418497937] [2021-11-25 19:02:22,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418497937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:22,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:22,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:02:22,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874685716] [2021-11-25 19:02:22,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:22,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:02:22,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:22,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:02:22,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:02:22,423 INFO L87 Difference]: Start difference. First operand 16211 states and 20894 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:30,270 INFO L93 Difference]: Finished difference Result 22753 states and 29894 transitions. [2021-11-25 19:02:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:02:30,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 19:02:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:30,293 INFO L225 Difference]: With dead ends: 22753 [2021-11-25 19:02:30,294 INFO L226 Difference]: Without dead ends: 21754 [2021-11-25 19:02:30,299 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 [2021-11-25 19:02:30,300 INFO L933 BasicCegarLoop]: 1877 mSDtfsCounter, 11821 mSDsluCounter, 6929 mSDsCounter, 0 mSdLazyCounter, 9701 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11821 SdHoareTripleChecker+Valid, 8793 SdHoareTripleChecker+Invalid, 9960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 9701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:30,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11821 Valid, 8793 Invalid, 9960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 9701 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-25 19:02:30,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21754 states. [2021-11-25 19:02:32,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21754 to 16211. [2021-11-25 19:02:32,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2901691984685686) internal successors, (20893), 16210 states have internal predecessors, (20893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20893 transitions. [2021-11-25 19:02:32,332 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20893 transitions. Word has length 82 [2021-11-25 19:02:32,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:32,333 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20893 transitions. [2021-11-25 19:02:32,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20893 transitions. [2021-11-25 19:02:32,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 19:02:32,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:32,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:32,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 19:02:32,348 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:02:32,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash 152682710, now seen corresponding path program 1 times [2021-11-25 19:02:32,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:32,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616391369] [2021-11-25 19:02:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:32,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:32,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:32,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616391369] [2021-11-25 19:02:32,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616391369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:32,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:32,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:02:32,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501928287] [2021-11-25 19:02:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:32,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:02:32,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:32,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:02:32,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:02:32,496 INFO L87 Difference]: Start difference. First operand 16211 states and 20893 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:40,006 INFO L93 Difference]: Finished difference Result 23451 states and 30754 transitions. [2021-11-25 19:02:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:02:40,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 19:02:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:40,028 INFO L225 Difference]: With dead ends: 23451 [2021-11-25 19:02:40,029 INFO L226 Difference]: Without dead ends: 21921 [2021-11-25 19:02:40,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:02:40,034 INFO L933 BasicCegarLoop]: 1873 mSDtfsCounter, 14184 mSDsluCounter, 5809 mSDsCounter, 0 mSdLazyCounter, 8697 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14184 SdHoareTripleChecker+Valid, 7673 SdHoareTripleChecker+Invalid, 9113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 8697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:40,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14184 Valid, 7673 Invalid, 9113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 8697 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 19:02:40,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21921 states. [2021-11-25 19:02:42,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21921 to 16211. [2021-11-25 19:02:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2901074472026677) internal successors, (20892), 16210 states have internal predecessors, (20892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20892 transitions. [2021-11-25 19:02:42,118 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20892 transitions. Word has length 82 [2021-11-25 19:02:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:42,119 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20892 transitions. [2021-11-25 19:02:42,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20892 transitions. [2021-11-25 19:02:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 19:02:42,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:42,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:42,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 19:02:42,131 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:02:42,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:42,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1849994643, now seen corresponding path program 1 times [2021-11-25 19:02:42,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:42,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297928803] [2021-11-25 19:02:42,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:42,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:42,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:42,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297928803] [2021-11-25 19:02:42,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297928803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:42,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:42,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:02:42,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957810089] [2021-11-25 19:02:42,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:42,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:02:42,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:42,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:02:42,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:02:42,273 INFO L87 Difference]: Start difference. First operand 16211 states and 20892 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:51,106 INFO L93 Difference]: Finished difference Result 26369 states and 34776 transitions. [2021-11-25 19:02:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:02:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 19:02:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:51,137 INFO L225 Difference]: With dead ends: 26369 [2021-11-25 19:02:51,137 INFO L226 Difference]: Without dead ends: 24775 [2021-11-25 19:02:51,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 19:02:51,142 INFO L933 BasicCegarLoop]: 1980 mSDtfsCounter, 8270 mSDsluCounter, 6707 mSDsCounter, 0 mSdLazyCounter, 10115 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8270 SdHoareTripleChecker+Valid, 8674 SdHoareTripleChecker+Invalid, 10334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 10115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:51,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8270 Valid, 8674 Invalid, 10334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 10115 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-25 19:02:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24775 states. [2021-11-25 19:02:53,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24775 to 16211. [2021-11-25 19:02:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2900456959367668) internal successors, (20891), 16210 states have internal predecessors, (20891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20891 transitions. [2021-11-25 19:02:53,338 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20891 transitions. Word has length 82 [2021-11-25 19:02:53,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:53,338 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20891 transitions. [2021-11-25 19:02:53,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:53,338 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20891 transitions. [2021-11-25 19:02:53,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 19:02:53,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:53,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:53,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 19:02:53,352 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:02:53,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1794558322, now seen corresponding path program 1 times [2021-11-25 19:02:53,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:53,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050407570] [2021-11-25 19:02:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:53,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:53,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:53,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050407570] [2021-11-25 19:02:53,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050407570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:53,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:53,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:02:53,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941797757] [2021-11-25 19:02:53,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:53,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:02:53,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:02:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:02:53,494 INFO L87 Difference]: Start difference. First operand 16211 states and 20891 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:02,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:02,409 INFO L93 Difference]: Finished difference Result 26501 states and 34980 transitions. [2021-11-25 19:03:02,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:03:02,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 19:03:02,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:02,437 INFO L225 Difference]: With dead ends: 26501 [2021-11-25 19:03:02,438 INFO L226 Difference]: Without dead ends: 24477 [2021-11-25 19:03:02,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:03:02,446 INFO L933 BasicCegarLoop]: 1953 mSDtfsCounter, 14459 mSDsluCounter, 6020 mSDsCounter, 0 mSdLazyCounter, 9296 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14459 SdHoareTripleChecker+Valid, 7966 SdHoareTripleChecker+Invalid, 9674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 9296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:02,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14459 Valid, 7966 Invalid, 9674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 9296 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-25 19:03:02,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24477 states. [2021-11-25 19:03:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24477 to 16211. [2021-11-25 19:03:04,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2899839446708659) internal successors, (20890), 16210 states have internal predecessors, (20890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20890 transitions. [2021-11-25 19:03:04,696 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20890 transitions. Word has length 82 [2021-11-25 19:03:04,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:04,696 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20890 transitions. [2021-11-25 19:03:04,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20890 transitions. [2021-11-25 19:03:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 19:03:04,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:04,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:04,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 19:03:04,707 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:03:04,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:04,707 INFO L85 PathProgramCache]: Analyzing trace with hash -994731141, now seen corresponding path program 1 times [2021-11-25 19:03:04,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:04,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159504422] [2021-11-25 19:03:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:04,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:04,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:04,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159504422] [2021-11-25 19:03:04,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159504422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:04,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:04,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:03:04,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655677260] [2021-11-25 19:03:04,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:04,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:03:04,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:04,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:03:04,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:03:04,863 INFO L87 Difference]: Start difference. First operand 16211 states and 20890 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:13,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:13,297 INFO L93 Difference]: Finished difference Result 25443 states and 33580 transitions. [2021-11-25 19:03:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:03:13,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 19:03:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:13,325 INFO L225 Difference]: With dead ends: 25443 [2021-11-25 19:03:13,326 INFO L226 Difference]: Without dead ends: 23449 [2021-11-25 19:03:13,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 19:03:13,332 INFO L933 BasicCegarLoop]: 1966 mSDtfsCounter, 8230 mSDsluCounter, 6612 mSDsCounter, 0 mSdLazyCounter, 9466 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8230 SdHoareTripleChecker+Valid, 8570 SdHoareTripleChecker+Invalid, 9699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 9466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:13,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8230 Valid, 8570 Invalid, 9699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 9466 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-25 19:03:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23449 states. [2021-11-25 19:03:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23449 to 16211. [2021-11-25 19:03:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2899221934049647) internal successors, (20889), 16210 states have internal predecessors, (20889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20889 transitions. [2021-11-25 19:03:15,604 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20889 transitions. Word has length 82 [2021-11-25 19:03:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:15,604 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20889 transitions. [2021-11-25 19:03:15,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20889 transitions. [2021-11-25 19:03:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 19:03:15,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:15,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:15,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 19:03:15,614 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:03:15,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:15,614 INFO L85 PathProgramCache]: Analyzing trace with hash 468122123, now seen corresponding path program 1 times [2021-11-25 19:03:15,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:15,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856368354] [2021-11-25 19:03:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:15,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:15,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:15,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856368354] [2021-11-25 19:03:15,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856368354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:15,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:15,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:03:15,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101959005] [2021-11-25 19:03:15,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:15,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:03:15,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:15,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:03:15,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:03:15,792 INFO L87 Difference]: Start difference. First operand 16211 states and 20889 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:25,453 INFO L93 Difference]: Finished difference Result 28450 states and 37629 transitions. [2021-11-25 19:03:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 19:03:25,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 19:03:25,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:25,484 INFO L225 Difference]: With dead ends: 28450 [2021-11-25 19:03:25,484 INFO L226 Difference]: Without dead ends: 26280 [2021-11-25 19:03:25,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:03:25,490 INFO L933 BasicCegarLoop]: 1957 mSDtfsCounter, 17387 mSDsluCounter, 7026 mSDsCounter, 0 mSdLazyCounter, 9819 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17387 SdHoareTripleChecker+Valid, 8976 SdHoareTripleChecker+Invalid, 10240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 9819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:25,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17387 Valid, 8976 Invalid, 10240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 9819 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-25 19:03:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26280 states. [2021-11-25 19:03:27,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26280 to 16211. [2021-11-25 19:03:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2898604421390638) internal successors, (20888), 16210 states have internal predecessors, (20888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:27,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20888 transitions. [2021-11-25 19:03:27,727 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20888 transitions. Word has length 82 [2021-11-25 19:03:27,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:27,727 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20888 transitions. [2021-11-25 19:03:27,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20888 transitions. [2021-11-25 19:03:27,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 19:03:27,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:27,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:27,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 19:03:27,743 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:03:27,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash -526527095, now seen corresponding path program 1 times [2021-11-25 19:03:27,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:27,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102437857] [2021-11-25 19:03:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:27,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:27,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:27,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102437857] [2021-11-25 19:03:27,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102437857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:27,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:27,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:03:27,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30546682] [2021-11-25 19:03:27,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:27,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:03:27,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:27,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:03:27,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:03:27,880 INFO L87 Difference]: Start difference. First operand 16211 states and 20888 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:36,138 INFO L93 Difference]: Finished difference Result 22408 states and 29118 transitions. [2021-11-25 19:03:36,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:03:36,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 19:03:36,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:36,160 INFO L225 Difference]: With dead ends: 22408 [2021-11-25 19:03:36,160 INFO L226 Difference]: Without dead ends: 22398 [2021-11-25 19:03:36,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:03:36,164 INFO L933 BasicCegarLoop]: 1919 mSDtfsCounter, 14120 mSDsluCounter, 5968 mSDsCounter, 0 mSdLazyCounter, 9143 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14120 SdHoareTripleChecker+Valid, 7881 SdHoareTripleChecker+Invalid, 9518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 9143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:36,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14120 Valid, 7881 Invalid, 9518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 9143 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-25 19:03:36,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22398 states. [2021-11-25 19:03:38,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22398 to 16211. [2021-11-25 19:03:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.289798690873163) internal successors, (20887), 16210 states have internal predecessors, (20887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20887 transitions. [2021-11-25 19:03:38,496 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20887 transitions. Word has length 82 [2021-11-25 19:03:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:38,497 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20887 transitions. [2021-11-25 19:03:38,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20887 transitions. [2021-11-25 19:03:38,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 19:03:38,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:38,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:38,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 19:03:38,506 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:03:38,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:38,507 INFO L85 PathProgramCache]: Analyzing trace with hash -734838592, now seen corresponding path program 1 times [2021-11-25 19:03:38,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:38,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699445847] [2021-11-25 19:03:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:38,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:38,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:38,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699445847] [2021-11-25 19:03:38,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699445847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:38,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:38,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 19:03:38,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555524213] [2021-11-25 19:03:38,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:38,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:03:38,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:38,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:03:38,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:03:38,900 INFO L87 Difference]: Start difference. First operand 16211 states and 20887 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:47,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:47,345 INFO L93 Difference]: Finished difference Result 28247 states and 38104 transitions. [2021-11-25 19:03:47,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:03:47,346 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 19:03:47,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:47,375 INFO L225 Difference]: With dead ends: 28247 [2021-11-25 19:03:47,375 INFO L226 Difference]: Without dead ends: 25185 [2021-11-25 19:03:47,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:03:47,384 INFO L933 BasicCegarLoop]: 3685 mSDtfsCounter, 21659 mSDsluCounter, 15465 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21659 SdHoareTripleChecker+Valid, 19058 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:47,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21659 Valid, 19058 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2433 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 19:03:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25185 states. [2021-11-25 19:03:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25185 to 16159. [2021-11-25 19:03:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16159 states, 16143 states have (on average 1.289846992504491) internal successors, (20822), 16158 states have internal predecessors, (20822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16159 states to 16159 states and 20822 transitions. [2021-11-25 19:03:49,996 INFO L78 Accepts]: Start accepts. Automaton has 16159 states and 20822 transitions. Word has length 82 [2021-11-25 19:03:49,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:49,997 INFO L470 AbstractCegarLoop]: Abstraction has 16159 states and 20822 transitions. [2021-11-25 19:03:49,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 16159 states and 20822 transitions. [2021-11-25 19:03:50,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 19:03:50,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:50,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:50,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 19:03:50,007 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:03:50,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1770899711, now seen corresponding path program 1 times [2021-11-25 19:03:50,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:50,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554920701] [2021-11-25 19:03:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:50,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:50,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:50,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:50,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554920701] [2021-11-25 19:03:50,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554920701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:50,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:50,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:03:50,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942144038] [2021-11-25 19:03:50,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:50,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:03:50,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:50,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:03:50,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:50,087 INFO L87 Difference]: Start difference. First operand 16159 states and 20822 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:53,315 INFO L93 Difference]: Finished difference Result 20870 states and 27595 transitions. [2021-11-25 19:03:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:03:53,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 19:03:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:53,333 INFO L225 Difference]: With dead ends: 20870 [2021-11-25 19:03:53,333 INFO L226 Difference]: Without dead ends: 16023 [2021-11-25 19:03:53,340 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 [2021-11-25 19:03:53,341 INFO L933 BasicCegarLoop]: 3711 mSDtfsCounter, 2278 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 5111 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:53,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2278 Valid, 5111 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:03:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16023 states. [2021-11-25 19:03:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16023 to 13029. [2021-11-25 19:03:55,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13029 states, 13013 states have (on average 1.3074617690002306) internal successors, (17014), 13028 states have internal predecessors, (17014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13029 states to 13029 states and 17014 transitions. [2021-11-25 19:03:55,948 INFO L78 Accepts]: Start accepts. Automaton has 13029 states and 17014 transitions. Word has length 83 [2021-11-25 19:03:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:55,948 INFO L470 AbstractCegarLoop]: Abstraction has 13029 states and 17014 transitions. [2021-11-25 19:03:55,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:55,949 INFO L276 IsEmpty]: Start isEmpty. Operand 13029 states and 17014 transitions. [2021-11-25 19:03:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 19:03:55,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:55,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:55,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 19:03:55,957 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:03:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:55,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1680013345, now seen corresponding path program 1 times [2021-11-25 19:03:55,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:55,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454505723] [2021-11-25 19:03:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:55,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:03:56,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:56,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454505723] [2021-11-25 19:03:56,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454505723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:56,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:56,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:03:56,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238141727] [2021-11-25 19:03:56,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:56,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:03:56,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:56,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:03:56,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:56,036 INFO L87 Difference]: Start difference. First operand 13029 states and 17014 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:00,383 INFO L93 Difference]: Finished difference Result 19955 states and 26941 transitions. [2021-11-25 19:04:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:04:00,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 19:04:00,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:00,400 INFO L225 Difference]: With dead ends: 19955 [2021-11-25 19:04:00,400 INFO L226 Difference]: Without dead ends: 15301 [2021-11-25 19:04:00,407 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 [2021-11-25 19:04:00,407 INFO L933 BasicCegarLoop]: 3659 mSDtfsCounter, 1564 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 5772 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:00,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 5772 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:04:00,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15301 states. [2021-11-25 19:04:04,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15301 to 15299. [2021-11-25 19:04:04,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15299 states, 15283 states have (on average 1.3284695413204213) internal successors, (20303), 15298 states have internal predecessors, (20303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15299 states to 15299 states and 20303 transitions. [2021-11-25 19:04:04,362 INFO L78 Accepts]: Start accepts. Automaton has 15299 states and 20303 transitions. Word has length 83 [2021-11-25 19:04:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:04,362 INFO L470 AbstractCegarLoop]: Abstraction has 15299 states and 20303 transitions. [2021-11-25 19:04:04,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 15299 states and 20303 transitions. [2021-11-25 19:04:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 19:04:04,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:04,370 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] [2021-11-25 19:04:04,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 19:04:04,371 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:04:04,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:04,371 INFO L85 PathProgramCache]: Analyzing trace with hash -436820007, now seen corresponding path program 1 times [2021-11-25 19:04:04,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:04,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402046573] [2021-11-25 19:04:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:04,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:04,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:04:04,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402046573] [2021-11-25 19:04:04,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402046573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:04,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:04,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:04:04,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032885674] [2021-11-25 19:04:04,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:04,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:04:04,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:04:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:04:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:04:04,442 INFO L87 Difference]: Start difference. First operand 15299 states and 20303 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:11,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:11,661 INFO L93 Difference]: Finished difference Result 32340 states and 43831 transitions. [2021-11-25 19:04:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:04:11,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 19:04:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:11,688 INFO L225 Difference]: With dead ends: 32340 [2021-11-25 19:04:11,688 INFO L226 Difference]: Without dead ends: 24094 [2021-11-25 19:04:11,699 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 [2021-11-25 19:04:11,699 INFO L933 BasicCegarLoop]: 3755 mSDtfsCounter, 2216 mSDsluCounter, 3096 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:11,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 6827 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:04:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24094 states. [2021-11-25 19:04:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24094 to 24078. [2021-11-25 19:04:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24078 states, 24062 states have (on average 1.3350095586401796) internal successors, (32123), 24077 states have internal predecessors, (32123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24078 states to 24078 states and 32123 transitions. [2021-11-25 19:04:18,760 INFO L78 Accepts]: Start accepts. Automaton has 24078 states and 32123 transitions. Word has length 83 [2021-11-25 19:04:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:18,760 INFO L470 AbstractCegarLoop]: Abstraction has 24078 states and 32123 transitions. [2021-11-25 19:04:18,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 24078 states and 32123 transitions. [2021-11-25 19:04:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 19:04:18,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:18,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:18,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 19:04:18,771 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:04:18,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:18,771 INFO L85 PathProgramCache]: Analyzing trace with hash -211123533, now seen corresponding path program 1 times [2021-11-25 19:04:18,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:18,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270557253] [2021-11-25 19:04:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:18,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:18,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:04:18,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270557253] [2021-11-25 19:04:18,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270557253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:18,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:18,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:04:18,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090319601] [2021-11-25 19:04:18,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:18,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:04:18,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:04:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:04:18,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:04:18,841 INFO L87 Difference]: Start difference. First operand 24078 states and 32123 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:27,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:27,558 INFO L93 Difference]: Finished difference Result 43023 states and 58197 transitions. [2021-11-25 19:04:27,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:04:27,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 19:04:27,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:27,593 INFO L225 Difference]: With dead ends: 43023 [2021-11-25 19:04:27,593 INFO L226 Difference]: Without dead ends: 24914 [2021-11-25 19:04:27,753 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 [2021-11-25 19:04:27,753 INFO L933 BasicCegarLoop]: 2675 mSDtfsCounter, 2656 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2656 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:27,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2656 Valid, 3396 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:04:27,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24914 states. [2021-11-25 19:04:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24914 to 20340. [2021-11-25 19:04:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20340 states, 20328 states have (on average 1.341401023219205) internal successors, (27268), 20339 states have internal predecessors, (27268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20340 states to 20340 states and 27268 transitions. [2021-11-25 19:04:34,540 INFO L78 Accepts]: Start accepts. Automaton has 20340 states and 27268 transitions. Word has length 83 [2021-11-25 19:04:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:34,541 INFO L470 AbstractCegarLoop]: Abstraction has 20340 states and 27268 transitions. [2021-11-25 19:04:34,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 20340 states and 27268 transitions. [2021-11-25 19:04:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 19:04:34,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:34,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:34,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 19:04:34,550 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:04:34,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1655686854, now seen corresponding path program 1 times [2021-11-25 19:04:34,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:34,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507597741] [2021-11-25 19:04:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:34,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:34,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:04:34,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507597741] [2021-11-25 19:04:34,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507597741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:34,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:34,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:04:34,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312722369] [2021-11-25 19:04:34,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:34,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:04:34,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:04:34,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:04:34,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:04:34,623 INFO L87 Difference]: Start difference. First operand 20340 states and 27268 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:47,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:47,055 INFO L93 Difference]: Finished difference Result 47030 states and 64166 transitions. [2021-11-25 19:04:47,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:04:47,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 19:04:47,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:47,104 INFO L225 Difference]: With dead ends: 47030 [2021-11-25 19:04:47,104 INFO L226 Difference]: Without dead ends: 33014 [2021-11-25 19:04:47,117 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 [2021-11-25 19:04:47,118 INFO L933 BasicCegarLoop]: 2854 mSDtfsCounter, 1706 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:47,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 5057 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:04:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33014 states. [2021-11-25 19:04:59,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33014 to 32998. [2021-11-25 19:04:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32998 states, 32986 states have (on average 1.342993997453465) internal successors, (44300), 32997 states have internal predecessors, (44300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32998 states to 32998 states and 44300 transitions. [2021-11-25 19:04:59,744 INFO L78 Accepts]: Start accepts. Automaton has 32998 states and 44300 transitions. Word has length 83 [2021-11-25 19:04:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:59,745 INFO L470 AbstractCegarLoop]: Abstraction has 32998 states and 44300 transitions. [2021-11-25 19:04:59,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 32998 states and 44300 transitions. [2021-11-25 19:04:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 19:04:59,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:59,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:59,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 19:04:59,756 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:04:59,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:59,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1347658320, now seen corresponding path program 1 times [2021-11-25 19:04:59,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:59,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950992947] [2021-11-25 19:04:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:59,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:05:00,203 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:00,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950992947] [2021-11-25 19:05:00,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950992947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:00,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:00,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 19:05:00,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784745022] [2021-11-25 19:05:00,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:00,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:05:00,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:00,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:05:00,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:05:00,205 INFO L87 Difference]: Start difference. First operand 32998 states and 44300 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:05:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:40,571 INFO L93 Difference]: Finished difference Result 80229 states and 109468 transitions. [2021-11-25 19:05:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:05:40,571 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 19:05:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:40,708 INFO L225 Difference]: With dead ends: 80229 [2021-11-25 19:05:40,708 INFO L226 Difference]: Without dead ends: 80216 [2021-11-25 19:05:40,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2021-11-25 19:05:40,724 INFO L933 BasicCegarLoop]: 2961 mSDtfsCounter, 14989 mSDsluCounter, 15584 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14989 SdHoareTripleChecker+Valid, 18390 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:40,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14989 Valid, 18390 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 19:05:40,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80216 states. [2021-11-25 19:05:54,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80216 to 32985. [2021-11-25 19:05:54,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32985 states, 32974 states have (on average 1.3430884939649421) internal successors, (44287), 32984 states have internal predecessors, (44287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:05:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32985 states to 32985 states and 44287 transitions. [2021-11-25 19:05:54,467 INFO L78 Accepts]: Start accepts. Automaton has 32985 states and 44287 transitions. Word has length 83 [2021-11-25 19:05:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:54,467 INFO L470 AbstractCegarLoop]: Abstraction has 32985 states and 44287 transitions. [2021-11-25 19:05:54,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:05:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 32985 states and 44287 transitions. [2021-11-25 19:05:54,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 19:05:54,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:54,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:54,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 19:05:54,477 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:05:54,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:54,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1068001229, now seen corresponding path program 1 times [2021-11-25 19:05:54,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:54,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090374116] [2021-11-25 19:05:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:54,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:54,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:05:54,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:54,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090374116] [2021-11-25 19:05:54,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090374116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:54,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:54,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:05:54,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500291888] [2021-11-25 19:05:54,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:54,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:05:54,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:05:54,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:05:54,608 INFO L87 Difference]: Start difference. First operand 32985 states and 44287 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:06:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:22,164 INFO L93 Difference]: Finished difference Result 54661 states and 73277 transitions. [2021-11-25 19:06:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:06:22,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 19:06:22,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:22,247 INFO L225 Difference]: With dead ends: 54661 [2021-11-25 19:06:22,247 INFO L226 Difference]: Without dead ends: 51797 [2021-11-25 19:06:22,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:06:22,259 INFO L933 BasicCegarLoop]: 1475 mSDtfsCounter, 10385 mSDsluCounter, 4536 mSDsCounter, 0 mSdLazyCounter, 6956 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10385 SdHoareTripleChecker+Valid, 6000 SdHoareTripleChecker+Invalid, 7219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 6956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:22,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10385 Valid, 6000 Invalid, 7219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 6956 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 19:06:22,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51797 states. [2021-11-25 19:06:35,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51797 to 32973. [2021-11-25 19:06:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32973 states, 32962 states have (on average 1.3430617074206663) internal successors, (44270), 32972 states have internal predecessors, (44270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:06:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32973 states to 32973 states and 44270 transitions. [2021-11-25 19:06:35,967 INFO L78 Accepts]: Start accepts. Automaton has 32973 states and 44270 transitions. Word has length 83 [2021-11-25 19:06:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:35,967 INFO L470 AbstractCegarLoop]: Abstraction has 32973 states and 44270 transitions. [2021-11-25 19:06:35,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:06:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 32973 states and 44270 transitions. [2021-11-25 19:06:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-25 19:06:35,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:35,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:35,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 19:06:35,980 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:06:35,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:35,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1456246563, now seen corresponding path program 1 times [2021-11-25 19:06:35,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:35,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141231343] [2021-11-25 19:06:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:35,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:06:36,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:36,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141231343] [2021-11-25 19:06:36,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141231343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:36,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:06:36,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:06:36,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32262039] [2021-11-25 19:06:36,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:36,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:06:36,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:36,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:06:36,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:06:36,047 INFO L87 Difference]: Start difference. First operand 32973 states and 44270 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:06:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:52,142 INFO L93 Difference]: Finished difference Result 64178 states and 87232 transitions. [2021-11-25 19:06:52,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:06:52,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-25 19:06:52,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:52,195 INFO L225 Difference]: With dead ends: 64178 [2021-11-25 19:06:52,195 INFO L226 Difference]: Without dead ends: 35472 [2021-11-25 19:06:52,220 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 [2021-11-25 19:06:52,221 INFO L933 BasicCegarLoop]: 2719 mSDtfsCounter, 2606 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2606 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:52,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2606 Valid, 3613 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:06:52,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35472 states. [2021-11-25 19:07:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35472 to 28550. [2021-11-25 19:07:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28550 states, 28539 states have (on average 1.354357195416798) internal successors, (38652), 28549 states have internal predecessors, (38652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:07:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28550 states to 28550 states and 38652 transitions. [2021-11-25 19:07:04,944 INFO L78 Accepts]: Start accepts. Automaton has 28550 states and 38652 transitions. Word has length 84 [2021-11-25 19:07:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:04,944 INFO L470 AbstractCegarLoop]: Abstraction has 28550 states and 38652 transitions. [2021-11-25 19:07:04,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:07:04,944 INFO L276 IsEmpty]: Start isEmpty. Operand 28550 states and 38652 transitions. [2021-11-25 19:07:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-25 19:07:04,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:04,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:04,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 19:07:04,952 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:07:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:04,953 INFO L85 PathProgramCache]: Analyzing trace with hash -222283580, now seen corresponding path program 1 times [2021-11-25 19:07:04,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:04,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550413479] [2021-11-25 19:07:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:04,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:07:05,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:05,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550413479] [2021-11-25 19:07:05,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550413479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:05,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:07:05,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 19:07:05,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632361216] [2021-11-25 19:07:05,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:05,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:07:05,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:05,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:07:05,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:07:05,279 INFO L87 Difference]: Start difference. First operand 28550 states and 38652 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:07:29,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:29,904 INFO L93 Difference]: Finished difference Result 47285 states and 64215 transitions. [2021-11-25 19:07:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:07:29,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-25 19:07:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:29,960 INFO L225 Difference]: With dead ends: 47285 [2021-11-25 19:07:29,960 INFO L226 Difference]: Without dead ends: 45859 [2021-11-25 19:07:29,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:07:29,969 INFO L933 BasicCegarLoop]: 2606 mSDtfsCounter, 15142 mSDsluCounter, 13061 mSDsCounter, 0 mSdLazyCounter, 2640 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15142 SdHoareTripleChecker+Valid, 15484 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 2640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:29,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15142 Valid, 15484 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 2640 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 19:07:29,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45859 states. [2021-11-25 19:07:42,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45859 to 28550. [2021-11-25 19:07:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28550 states, 28539 states have (on average 1.35428711587652) internal successors, (38650), 28549 states have internal predecessors, (38650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:07:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28550 states to 28550 states and 38650 transitions. [2021-11-25 19:07:42,994 INFO L78 Accepts]: Start accepts. Automaton has 28550 states and 38650 transitions. Word has length 84 [2021-11-25 19:07:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:42,994 INFO L470 AbstractCegarLoop]: Abstraction has 28550 states and 38650 transitions. [2021-11-25 19:07:42,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:07:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 28550 states and 38650 transitions. [2021-11-25 19:07:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-25 19:07:43,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:43,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:43,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 19:07:43,001 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-25 19:07:43,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 105654123, now seen corresponding path program 1 times [2021-11-25 19:07:43,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:43,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114980254] [2021-11-25 19:07:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:43,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:07:43,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:43,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114980254] [2021-11-25 19:07:43,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114980254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:43,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:07:43,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:07:43,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851706818] [2021-11-25 19:07:43,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:43,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:07:43,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:43,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:07:43,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:07:43,120 INFO L87 Difference]: Start difference. First operand 28550 states and 38650 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)