./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7ee0c03ea7571fbf8ad45188f5238b16bf8ad4a8ddf56fc7d5d394e59af71d1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:41:21,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:41:21,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:41:21,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:41:21,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:41:21,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:41:21,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:41:21,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:41:21,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:41:21,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:41:21,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:41:21,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:41:21,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:41:21,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:41:21,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:41:21,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:41:21,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:41:21,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:41:21,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:41:21,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:41:21,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:41:21,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:41:21,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:41:21,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:41:21,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:41:21,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:41:21,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:41:21,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:41:21,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:41:21,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:41:21,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:41:21,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:41:21,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:41:21,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:41:21,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:41:21,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:41:21,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:41:21,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:41:21,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:41:21,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:41:21,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:41:21,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:41:21,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:41:21,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:41:21,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:41:21,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:41:21,705 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:41:21,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:41:21,706 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:41:21,706 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:41:21,706 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:41:21,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:41:21,708 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:41:21,708 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:41:21,708 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:41:21,708 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:41:21,709 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:41:21,709 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:41:21,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:41:21,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:41:21,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:41:21,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:41:21,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:41:21,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:41:21,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:41:21,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:41:21,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:41:21,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:41:21,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:41:21,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:41:21,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:41:21,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:41:21,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:41:21,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:41:21,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:41:21,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:41:21,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:41:21,716 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:41:21,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:41:21,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:41:21,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:41:21,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:41:21,717 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_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ee0c03ea7571fbf8ad45188f5238b16bf8ad4a8ddf56fc7d5d394e59af71d1f [2021-11-13 01:41:21,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:41:22,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:41:22,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:41:22,011 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:41:22,012 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:41:22,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-13 01:41:22,078 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/data/87cb14280/7b0f37aa65ed4888ab9fc17e7da8a5b3/FLAGcf4e6ed2f [2021-11-13 01:41:22,959 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:41:22,960 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-13 01:41:22,985 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/data/87cb14280/7b0f37aa65ed4888ab9fc17e7da8a5b3/FLAGcf4e6ed2f [2021-11-13 01:41:23,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/data/87cb14280/7b0f37aa65ed4888ab9fc17e7da8a5b3 [2021-11-13 01:41:23,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:41:23,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:41:23,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:41:23,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:41:23,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:41:23,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:41:23" (1/1) ... [2021-11-13 01:41:23,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1020dd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:23, skipping insertion in model container [2021-11-13 01:41:23,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:41:23" (1/1) ... [2021-11-13 01:41:23,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:41:23,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:41:24,194 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[37768,37781] [2021-11-13 01:41:24,266 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[53783,53796] [2021-11-13 01:41:24,298 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[61800,61813] [2021-11-13 01:41:24,314 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[65782,65795] [2021-11-13 01:41:24,330 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[69649,69662] [2021-11-13 01:41:24,405 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[86712,86725] [2021-11-13 01:41:24,443 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[94766,94779] [2021-11-13 01:41:24,457 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[98785,98798] [2021-11-13 01:41:24,471 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[102689,102702] [2021-11-13 01:41:24,486 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[107203,107216] [2021-11-13 01:41:24,511 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[111131,111144] [2021-11-13 01:41:24,540 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[115150,115163] [2021-11-13 01:41:24,553 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[119054,119067] [2021-11-13 01:41:24,568 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[123189,123202] [2021-11-13 01:41:24,582 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[127260,127273] [2021-11-13 01:41:24,596 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[131260,131273] [2021-11-13 01:41:24,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:41:24,651 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:41:24,964 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[37768,37781] [2021-11-13 01:41:25,010 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[53783,53796] [2021-11-13 01:41:25,033 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[61800,61813] [2021-11-13 01:41:25,046 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[65782,65795] [2021-11-13 01:41:25,058 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[69649,69662] [2021-11-13 01:41:25,103 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[86712,86725] [2021-11-13 01:41:25,125 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[94766,94779] [2021-11-13 01:41:25,139 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[98785,98798] [2021-11-13 01:41:25,163 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[102689,102702] [2021-11-13 01:41:25,177 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[107203,107216] [2021-11-13 01:41:25,189 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[111131,111144] [2021-11-13 01:41:25,201 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[115150,115163] [2021-11-13 01:41:25,214 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[119054,119067] [2021-11-13 01:41:25,227 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[123189,123202] [2021-11-13 01:41:25,239 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[127260,127273] [2021-11-13 01:41:25,252 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[131260,131273] [2021-11-13 01:41:25,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:41:25,323 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:41:25,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25 WrapperNode [2021-11-13 01:41:25,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:41:25,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:41:25,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:41:25,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:41:25,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25" (1/1) ... [2021-11-13 01:41:25,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25" (1/1) ... [2021-11-13 01:41:25,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:41:25,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:41:25,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:41:25,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:41:25,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25" (1/1) ... [2021-11-13 01:41:25,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25" (1/1) ... [2021-11-13 01:41:25,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25" (1/1) ... [2021-11-13 01:41:25,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25" (1/1) ... [2021-11-13 01:41:25,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25" (1/1) ... [2021-11-13 01:41:25,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25" (1/1) ... [2021-11-13 01:41:25,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25" (1/1) ... [2021-11-13 01:41:25,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:41:25,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:41:25,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:41:25,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:41:25,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25" (1/1) ... [2021-11-13 01:41:25,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:41:25,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:41:25,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:41:25,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:41:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 01:41:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:41:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:41:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:41:29,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:41:29,167 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:41:29,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:41:29 BoogieIcfgContainer [2021-11-13 01:41:29,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:41:29,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:41:29,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:41:29,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:41:29,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:41:23" (1/3) ... [2021-11-13 01:41:29,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429aaec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:41:29, skipping insertion in model container [2021-11-13 01:41:29,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:25" (2/3) ... [2021-11-13 01:41:29,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429aaec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:41:29, skipping insertion in model container [2021-11-13 01:41:29,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:41:29" (3/3) ... [2021-11-13 01:41:29,181 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-13 01:41:29,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:41:29,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-13 01:41:29,241 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:41:29,248 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 01:41:29,248 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-13 01:41:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 1170 states, 1153 states have (on average 1.7710320901994796) internal successors, (2042), 1169 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 01:41:29,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:29,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:29,320 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:29,329 INFO L85 PathProgramCache]: Analyzing trace with hash -959725519, now seen corresponding path program 1 times [2021-11-13 01:41:29,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:29,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226940083] [2021-11-13 01:41:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:29,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:29,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:29,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226940083] [2021-11-13 01:41:29,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226940083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:29,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:29,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:41:29,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146895167] [2021-11-13 01:41:29,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:29,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:41:29,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:41:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:41:29,870 INFO L87 Difference]: Start difference. First operand has 1170 states, 1153 states have (on average 1.7710320901994796) internal successors, (2042), 1169 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:30,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:30,857 INFO L93 Difference]: Finished difference Result 1365 states and 2339 transitions. [2021-11-13 01:41:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:41:30,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-13 01:41:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:30,886 INFO L225 Difference]: With dead ends: 1365 [2021-11-13 01:41:30,887 INFO L226 Difference]: Without dead ends: 788 [2021-11-13 01:41:30,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:41:30,902 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 3888 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 609.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3888 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.04ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 781.29ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:30,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3888 Valid, 818 Invalid, 595 Unknown, 0 Unchecked, 30.04ms Time], IncrementalHoareTripleChecker [31 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 781.29ms Time] [2021-11-13 01:41:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-11-13 01:41:31,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2021-11-13 01:41:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 772 states have (on average 1.2681347150259068) internal successors, (979), 787 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 979 transitions. [2021-11-13 01:41:31,047 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 979 transitions. Word has length 72 [2021-11-13 01:41:31,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:31,048 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 979 transitions. [2021-11-13 01:41:31,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 979 transitions. [2021-11-13 01:41:31,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 01:41:31,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:31,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:31,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 01:41:31,055 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:31,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:31,059 INFO L85 PathProgramCache]: Analyzing trace with hash -968066446, now seen corresponding path program 1 times [2021-11-13 01:41:31,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:31,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586068967] [2021-11-13 01:41:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:31,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:31,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:31,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586068967] [2021-11-13 01:41:31,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586068967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:31,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:31,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:41:31,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659029517] [2021-11-13 01:41:31,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:31,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:41:31,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:31,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:41:31,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:41:31,272 INFO L87 Difference]: Start difference. First operand 788 states and 979 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:32,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:32,068 INFO L93 Difference]: Finished difference Result 1366 states and 1712 transitions. [2021-11-13 01:41:32,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:41:32,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-13 01:41:32,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:32,075 INFO L225 Difference]: With dead ends: 1366 [2021-11-13 01:41:32,075 INFO L226 Difference]: Without dead ends: 966 [2021-11-13 01:41:32,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:41:32,077 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 3127 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 560.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3127 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.71ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 679.64ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:32,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3127 Valid, 657 Invalid, 631 Unknown, 0 Unchecked, 14.71ms Time], IncrementalHoareTripleChecker [23 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 679.64ms Time] [2021-11-13 01:41:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-13 01:41:32,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 872. [2021-11-13 01:41:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 856 states have (on average 1.3189252336448598) internal successors, (1129), 871 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1129 transitions. [2021-11-13 01:41:32,141 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1129 transitions. Word has length 72 [2021-11-13 01:41:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:32,142 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 1129 transitions. [2021-11-13 01:41:32,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1129 transitions. [2021-11-13 01:41:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 01:41:32,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:32,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:32,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 01:41:32,145 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:32,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:32,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1526182328, now seen corresponding path program 1 times [2021-11-13 01:41:32,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:32,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502454806] [2021-11-13 01:41:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:32,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:32,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:32,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502454806] [2021-11-13 01:41:32,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502454806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:32,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:32,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:41:32,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543890425] [2021-11-13 01:41:32,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:32,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:41:32,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:32,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:41:32,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:41:32,297 INFO L87 Difference]: Start difference. First operand 872 states and 1129 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:32,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:32,692 INFO L93 Difference]: Finished difference Result 1042 states and 1327 transitions. [2021-11-13 01:41:32,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:41:32,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-13 01:41:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:32,699 INFO L225 Difference]: With dead ends: 1042 [2021-11-13 01:41:32,699 INFO L226 Difference]: Without dead ends: 618 [2021-11-13 01:41:32,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:41:32,703 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 1619 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 261.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.83ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 321.44ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:32,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 336 Invalid, 296 Unknown, 0 Unchecked, 6.83ms Time], IncrementalHoareTripleChecker [29 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 321.44ms Time] [2021-11-13 01:41:32,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-11-13 01:41:32,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2021-11-13 01:41:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 602 states have (on average 1.318936877076412) internal successors, (794), 617 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 794 transitions. [2021-11-13 01:41:32,776 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 794 transitions. Word has length 72 [2021-11-13 01:41:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:32,776 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 794 transitions. [2021-11-13 01:41:32,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:32,777 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 794 transitions. [2021-11-13 01:41:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-13 01:41:32,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:32,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:32,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 01:41:32,779 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:32,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1953545306, now seen corresponding path program 1 times [2021-11-13 01:41:32,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:32,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087353370] [2021-11-13 01:41:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:32,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:32,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:32,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087353370] [2021-11-13 01:41:32,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087353370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:32,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:32,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:41:32,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689146089] [2021-11-13 01:41:32,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:32,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:41:32,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:32,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:41:32,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:41:32,924 INFO L87 Difference]: Start difference. First operand 618 states and 794 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:33,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:33,253 INFO L93 Difference]: Finished difference Result 885 states and 1138 transitions. [2021-11-13 01:41:33,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:41:33,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-13 01:41:33,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:33,259 INFO L225 Difference]: With dead ends: 885 [2021-11-13 01:41:33,259 INFO L226 Difference]: Without dead ends: 552 [2021-11-13 01:41:33,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:41:33,262 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 1466 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.27ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 243.73ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:33,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 310 Invalid, 223 Unknown, 0 Unchecked, 6.27ms Time], IncrementalHoareTripleChecker [10 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 243.73ms Time] [2021-11-13 01:41:33,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-13 01:41:33,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2021-11-13 01:41:33,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 536 states have (on average 1.328358208955224) internal successors, (712), 551 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 712 transitions. [2021-11-13 01:41:33,309 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 712 transitions. Word has length 74 [2021-11-13 01:41:33,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:33,310 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 712 transitions. [2021-11-13 01:41:33,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:33,310 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 712 transitions. [2021-11-13 01:41:33,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 01:41:33,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:33,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:33,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 01:41:33,313 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:33,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1983390979, now seen corresponding path program 1 times [2021-11-13 01:41:33,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:33,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143950515] [2021-11-13 01:41:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:33,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:33,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:33,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143950515] [2021-11-13 01:41:33,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143950515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:33,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:33,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:41:33,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945224377] [2021-11-13 01:41:33,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:33,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:41:33,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:33,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:41:33,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:41:33,412 INFO L87 Difference]: Start difference. First operand 552 states and 712 transitions. 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) [2021-11-13 01:41:33,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:33,755 INFO L93 Difference]: Finished difference Result 801 states and 1029 transitions. [2021-11-13 01:41:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:41:33,755 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 [2021-11-13 01:41:33,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:33,759 INFO L225 Difference]: With dead ends: 801 [2021-11-13 01:41:33,759 INFO L226 Difference]: Without dead ends: 544 [2021-11-13 01:41:33,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:41:33,761 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1361 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.09ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 261.34ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:33,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1361 Valid, 285 Invalid, 304 Unknown, 0 Unchecked, 6.09ms Time], IncrementalHoareTripleChecker [52 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 261.34ms Time] [2021-11-13 01:41:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-13 01:41:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2021-11-13 01:41:33,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3276515151515151) internal successors, (701), 543 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 701 transitions. [2021-11-13 01:41:33,805 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 701 transitions. Word has length 76 [2021-11-13 01:41:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:33,806 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 701 transitions. [2021-11-13 01:41:33,806 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) [2021-11-13 01:41:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 701 transitions. [2021-11-13 01:41:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:41:33,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:33,810 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] [2021-11-13 01:41:33,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 01:41:33,811 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash 802660192, now seen corresponding path program 1 times [2021-11-13 01:41:33,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:33,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824976241] [2021-11-13 01:41:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:33,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:34,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:34,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824976241] [2021-11-13 01:41:34,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824976241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:34,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:34,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 01:41:34,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709793378] [2021-11-13 01:41:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:34,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:41:34,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:41:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:41:34,062 INFO L87 Difference]: Start difference. First operand 544 states and 701 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 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) [2021-11-13 01:41:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:35,062 INFO L93 Difference]: Finished difference Result 1067 states and 1364 transitions. [2021-11-13 01:41:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:41:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 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 [2021-11-13 01:41:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:35,069 INFO L225 Difference]: With dead ends: 1067 [2021-11-13 01:41:35,069 INFO L226 Difference]: Without dead ends: 971 [2021-11-13 01:41:35,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:41:35,072 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 1782 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 611.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.53ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 743.74ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:35,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1782 Valid, 1545 Invalid, 1270 Unknown, 0 Unchecked, 13.53ms Time], IncrementalHoareTripleChecker [83 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 743.74ms Time] [2021-11-13 01:41:35,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2021-11-13 01:41:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 544. [2021-11-13 01:41:35,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3238636363636365) internal successors, (699), 543 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:35,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 699 transitions. [2021-11-13 01:41:35,127 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 699 transitions. Word has length 78 [2021-11-13 01:41:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:35,129 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 699 transitions. [2021-11-13 01:41:35,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 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) [2021-11-13 01:41:35,129 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 699 transitions. [2021-11-13 01:41:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:41:35,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:35,135 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] [2021-11-13 01:41:35,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 01:41:35,135 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:35,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1964857184, now seen corresponding path program 1 times [2021-11-13 01:41:35,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:35,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437922737] [2021-11-13 01:41:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:35,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:35,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:35,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437922737] [2021-11-13 01:41:35,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437922737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:35,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:35,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 01:41:35,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096103712] [2021-11-13 01:41:35,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:35,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:41:35,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:35,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:41:35,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:41:35,322 INFO L87 Difference]: Start difference. First operand 544 states and 699 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 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) [2021-11-13 01:41:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:35,982 INFO L93 Difference]: Finished difference Result 1001 states and 1243 transitions. [2021-11-13 01:41:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:41:35,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 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 [2021-11-13 01:41:35,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:35,987 INFO L225 Difference]: With dead ends: 1001 [2021-11-13 01:41:35,987 INFO L226 Difference]: Without dead ends: 751 [2021-11-13 01:41:35,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:41:35,989 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 2197 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 398.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2197 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.72ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 480.12ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:35,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2197 Valid, 688 Invalid, 636 Unknown, 0 Unchecked, 8.72ms Time], IncrementalHoareTripleChecker [57 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 480.12ms Time] [2021-11-13 01:41:35,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-11-13 01:41:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 544. [2021-11-13 01:41:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.321969696969697) internal successors, (698), 543 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:36,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 698 transitions. [2021-11-13 01:41:36,050 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 698 transitions. Word has length 78 [2021-11-13 01:41:36,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:36,051 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 698 transitions. [2021-11-13 01:41:36,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 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) [2021-11-13 01:41:36,051 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 698 transitions. [2021-11-13 01:41:36,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:41:36,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:36,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:36,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 01:41:36,053 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:36,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:36,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1668159008, now seen corresponding path program 1 times [2021-11-13 01:41:36,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:36,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025445315] [2021-11-13 01:41:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:36,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:36,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:36,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025445315] [2021-11-13 01:41:36,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025445315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:36,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:36,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:36,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006240203] [2021-11-13 01:41:36,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:36,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:36,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:36,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:36,232 INFO L87 Difference]: Start difference. First operand 544 states and 698 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:37,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:37,256 INFO L93 Difference]: Finished difference Result 1144 states and 1478 transitions. [2021-11-13 01:41:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:41:37,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-13 01:41:37,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:37,263 INFO L225 Difference]: With dead ends: 1144 [2021-11-13 01:41:37,263 INFO L226 Difference]: Without dead ends: 1029 [2021-11-13 01:41:37,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:41:37,265 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 2152 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 584.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.53ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 705.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:37,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 1375 Invalid, 1113 Unknown, 0 Unchecked, 10.53ms Time], IncrementalHoareTripleChecker [34 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 705.00ms Time] [2021-11-13 01:41:37,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-11-13 01:41:37,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 544. [2021-11-13 01:41:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3200757575757576) internal successors, (697), 543 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:37,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 697 transitions. [2021-11-13 01:41:37,332 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 697 transitions. Word has length 78 [2021-11-13 01:41:37,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:37,333 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 697 transitions. [2021-11-13 01:41:37,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 697 transitions. [2021-11-13 01:41:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:41:37,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:37,335 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] [2021-11-13 01:41:37,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 01:41:37,336 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1675317728, now seen corresponding path program 1 times [2021-11-13 01:41:37,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:37,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028801615] [2021-11-13 01:41:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:37,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:37,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:37,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028801615] [2021-11-13 01:41:37,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028801615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:37,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:37,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:37,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635432034] [2021-11-13 01:41:37,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:37,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:37,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:37,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:37,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:37,525 INFO L87 Difference]: Start difference. First operand 544 states and 697 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:38,342 INFO L93 Difference]: Finished difference Result 796 states and 1024 transitions. [2021-11-13 01:41:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:41:38,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-13 01:41:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:38,347 INFO L225 Difference]: With dead ends: 796 [2021-11-13 01:41:38,347 INFO L226 Difference]: Without dead ends: 638 [2021-11-13 01:41:38,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:41:38,350 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1138 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 501.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.36ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 611.44ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:38,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 1646 Invalid, 1059 Unknown, 0 Unchecked, 8.36ms Time], IncrementalHoareTripleChecker [15 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 611.44ms Time] [2021-11-13 01:41:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-11-13 01:41:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 544. [2021-11-13 01:41:38,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3181818181818181) internal successors, (696), 543 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 696 transitions. [2021-11-13 01:41:38,413 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 696 transitions. Word has length 78 [2021-11-13 01:41:38,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:38,413 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 696 transitions. [2021-11-13 01:41:38,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 696 transitions. [2021-11-13 01:41:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 01:41:38,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:38,417 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] [2021-11-13 01:41:38,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 01:41:38,418 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1605144151, now seen corresponding path program 1 times [2021-11-13 01:41:38,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:38,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363244819] [2021-11-13 01:41:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:38,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:38,550 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:38,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363244819] [2021-11-13 01:41:38,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363244819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:38,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:38,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:38,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87485257] [2021-11-13 01:41:38,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:38,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:38,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:38,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:38,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:38,553 INFO L87 Difference]: Start difference. First operand 544 states and 696 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:39,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:39,526 INFO L93 Difference]: Finished difference Result 1068 states and 1359 transitions. [2021-11-13 01:41:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:41:39,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-13 01:41:39,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:39,533 INFO L225 Difference]: With dead ends: 1068 [2021-11-13 01:41:39,533 INFO L226 Difference]: Without dead ends: 979 [2021-11-13 01:41:39,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:41:39,535 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 2040 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 527.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.09ms SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 661.36ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:39,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2040 Valid, 1294 Invalid, 1121 Unknown, 0 Unchecked, 8.09ms Time], IncrementalHoareTripleChecker [100 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 661.36ms Time] [2021-11-13 01:41:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-11-13 01:41:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 544. [2021-11-13 01:41:39,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.316287878787879) internal successors, (695), 543 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 695 transitions. [2021-11-13 01:41:39,605 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 695 transitions. Word has length 79 [2021-11-13 01:41:39,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:39,606 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 695 transitions. [2021-11-13 01:41:39,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 695 transitions. [2021-11-13 01:41:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 01:41:39,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:39,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:39,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 01:41:39,611 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:39,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:39,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1798687067, now seen corresponding path program 1 times [2021-11-13 01:41:39,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:39,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131683392] [2021-11-13 01:41:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:39,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:39,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:39,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131683392] [2021-11-13 01:41:39,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131683392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:39,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:39,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 01:41:39,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851627442] [2021-11-13 01:41:39,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:39,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:41:39,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:39,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:41:39,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:41:39,823 INFO L87 Difference]: Start difference. First operand 544 states and 695 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 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) [2021-11-13 01:41:41,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:41,163 INFO L93 Difference]: Finished difference Result 920 states and 1182 transitions. [2021-11-13 01:41:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 01:41:41,163 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 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 [2021-11-13 01:41:41,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:41,168 INFO L225 Difference]: With dead ends: 920 [2021-11-13 01:41:41,169 INFO L226 Difference]: Without dead ends: 690 [2021-11-13 01:41:41,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:41:41,174 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 1751 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 750.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.09ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 918.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:41,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1751 Valid, 2001 Invalid, 1660 Unknown, 0 Unchecked, 10.09ms Time], IncrementalHoareTripleChecker [32 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 918.83ms Time] [2021-11-13 01:41:41,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-11-13 01:41:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 544. [2021-11-13 01:41:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3125) internal successors, (693), 543 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 693 transitions. [2021-11-13 01:41:41,263 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 693 transitions. Word has length 80 [2021-11-13 01:41:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:41,263 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 693 transitions. [2021-11-13 01:41:41,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 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) [2021-11-13 01:41:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 693 transitions. [2021-11-13 01:41:41,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 01:41:41,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:41,265 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] [2021-11-13 01:41:41,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 01:41:41,266 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:41,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1772365797, now seen corresponding path program 1 times [2021-11-13 01:41:41,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:41,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212410579] [2021-11-13 01:41:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:41,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:41,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:41,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212410579] [2021-11-13 01:41:41,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212410579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:41,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:41,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:41,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666029038] [2021-11-13 01:41:41,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:41,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:41,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:41,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:41,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:41,414 INFO L87 Difference]: Start difference. First operand 544 states and 693 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) [2021-11-13 01:41:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:42,453 INFO L93 Difference]: Finished difference Result 1164 states and 1497 transitions. [2021-11-13 01:41:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:41:42,453 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 [2021-11-13 01:41:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:42,461 INFO L225 Difference]: With dead ends: 1164 [2021-11-13 01:41:42,462 INFO L226 Difference]: Without dead ends: 1029 [2021-11-13 01:41:42,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:41:42,464 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 1682 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 603.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.49ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 730.24ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:42,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1682 Valid, 1933 Invalid, 1415 Unknown, 0 Unchecked, 7.49ms Time], IncrementalHoareTripleChecker [27 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 730.24ms Time] [2021-11-13 01:41:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-11-13 01:41:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 544. [2021-11-13 01:41:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.308712121212121) internal successors, (691), 543 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 691 transitions. [2021-11-13 01:41:42,543 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 691 transitions. Word has length 80 [2021-11-13 01:41:42,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:42,544 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 691 transitions. [2021-11-13 01:41:42,544 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) [2021-11-13 01:41:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 691 transitions. [2021-11-13 01:41:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 01:41:42,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:42,547 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] [2021-11-13 01:41:42,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 01:41:42,548 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1109843867, now seen corresponding path program 1 times [2021-11-13 01:41:42,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:42,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500752537] [2021-11-13 01:41:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:42,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:42,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:42,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:42,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500752537] [2021-11-13 01:41:42,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500752537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:42,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:42,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:42,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645271644] [2021-11-13 01:41:42,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:42,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:42,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:42,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:42,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:42,760 INFO L87 Difference]: Start difference. First operand 544 states and 691 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) [2021-11-13 01:41:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:43,765 INFO L93 Difference]: Finished difference Result 1110 states and 1419 transitions. [2021-11-13 01:41:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:41:43,765 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 [2021-11-13 01:41:43,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:43,771 INFO L225 Difference]: With dead ends: 1110 [2021-11-13 01:41:43,771 INFO L226 Difference]: Without dead ends: 1003 [2021-11-13 01:41:43,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:41:43,773 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 1613 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 592.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.15ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 726.44ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:43,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 1965 Invalid, 1423 Unknown, 0 Unchecked, 6.15ms Time], IncrementalHoareTripleChecker [38 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 726.44ms Time] [2021-11-13 01:41:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-13 01:41:43,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 544. [2021-11-13 01:41:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3049242424242424) internal successors, (689), 543 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 689 transitions. [2021-11-13 01:41:43,852 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 689 transitions. Word has length 80 [2021-11-13 01:41:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:43,852 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 689 transitions. [2021-11-13 01:41:43,852 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) [2021-11-13 01:41:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 689 transitions. [2021-11-13 01:41:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 01:41:43,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:43,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:43,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 01:41:43,855 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:43,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:43,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1167764005, now seen corresponding path program 1 times [2021-11-13 01:41:43,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:43,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118518060] [2021-11-13 01:41:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:43,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:43,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:43,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118518060] [2021-11-13 01:41:43,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118518060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:43,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:43,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:43,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810315496] [2021-11-13 01:41:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:43,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:43,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:43,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:43,998 INFO L87 Difference]: Start difference. First operand 544 states and 689 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) [2021-11-13 01:41:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:45,066 INFO L93 Difference]: Finished difference Result 1103 states and 1408 transitions. [2021-11-13 01:41:45,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:41:45,067 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 [2021-11-13 01:41:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:45,072 INFO L225 Difference]: With dead ends: 1103 [2021-11-13 01:41:45,072 INFO L226 Difference]: Without dead ends: 1003 [2021-11-13 01:41:45,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:41:45,074 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 1608 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 621.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.53ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 767.33ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:45,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 1963 Invalid, 1423 Unknown, 0 Unchecked, 6.53ms Time], IncrementalHoareTripleChecker [38 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 767.33ms Time] [2021-11-13 01:41:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-13 01:41:45,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 544. [2021-11-13 01:41:45,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.303030303030303) internal successors, (688), 543 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:45,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 688 transitions. [2021-11-13 01:41:45,155 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 688 transitions. Word has length 80 [2021-11-13 01:41:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:45,155 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 688 transitions. [2021-11-13 01:41:45,156 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) [2021-11-13 01:41:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 688 transitions. [2021-11-13 01:41:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 01:41:45,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:45,157 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] [2021-11-13 01:41:45,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 01:41:45,158 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:45,158 INFO L85 PathProgramCache]: Analyzing trace with hash 845800069, now seen corresponding path program 1 times [2021-11-13 01:41:45,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:45,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073604853] [2021-11-13 01:41:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:45,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:45,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:45,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073604853] [2021-11-13 01:41:45,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073604853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:45,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:45,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:45,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16604725] [2021-11-13 01:41:45,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:45,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:45,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:45,276 INFO L87 Difference]: Start difference. First operand 544 states and 688 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) [2021-11-13 01:41:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:46,223 INFO L93 Difference]: Finished difference Result 1153 states and 1476 transitions. [2021-11-13 01:41:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:41:46,224 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 [2021-11-13 01:41:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:46,229 INFO L225 Difference]: With dead ends: 1153 [2021-11-13 01:41:46,230 INFO L226 Difference]: Without dead ends: 1029 [2021-11-13 01:41:46,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:41:46,231 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 1744 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 481.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.52ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 636.88ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:46,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 1869 Invalid, 1362 Unknown, 0 Unchecked, 5.52ms Time], IncrementalHoareTripleChecker [29 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 636.88ms Time] [2021-11-13 01:41:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-11-13 01:41:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 544. [2021-11-13 01:41:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3011363636363635) internal successors, (687), 543 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 687 transitions. [2021-11-13 01:41:46,314 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 687 transitions. Word has length 80 [2021-11-13 01:41:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:46,314 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 687 transitions. [2021-11-13 01:41:46,314 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) [2021-11-13 01:41:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 687 transitions. [2021-11-13 01:41:46,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 01:41:46,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:46,316 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] [2021-11-13 01:41:46,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 01:41:46,316 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:46,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:46,317 INFO L85 PathProgramCache]: Analyzing trace with hash 319051941, now seen corresponding path program 1 times [2021-11-13 01:41:46,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:46,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525853044] [2021-11-13 01:41:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:46,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:46,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:46,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525853044] [2021-11-13 01:41:46,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525853044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:46,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:46,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:46,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790391314] [2021-11-13 01:41:46,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:46,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:46,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:46,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:46,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:46,438 INFO L87 Difference]: Start difference. First operand 544 states and 687 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) [2021-11-13 01:41:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:47,240 INFO L93 Difference]: Finished difference Result 985 states and 1237 transitions. [2021-11-13 01:41:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:41:47,241 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 [2021-11-13 01:41:47,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:47,246 INFO L225 Difference]: With dead ends: 985 [2021-11-13 01:41:47,246 INFO L226 Difference]: Without dead ends: 979 [2021-11-13 01:41:47,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:41:47,247 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 1926 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 420.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1926 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.24ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 536.21ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:47,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1926 Valid, 1405 Invalid, 1147 Unknown, 0 Unchecked, 5.24ms Time], IncrementalHoareTripleChecker [96 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 536.21ms Time] [2021-11-13 01:41:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-11-13 01:41:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 544. [2021-11-13 01:41:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.2992424242424243) internal successors, (686), 543 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 686 transitions. [2021-11-13 01:41:47,348 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 686 transitions. Word has length 80 [2021-11-13 01:41:47,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:47,348 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 686 transitions. [2021-11-13 01:41:47,349 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) [2021-11-13 01:41:47,349 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 686 transitions. [2021-11-13 01:41:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 01:41:47,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:47,350 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] [2021-11-13 01:41:47,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 01:41:47,351 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:47,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:47,351 INFO L85 PathProgramCache]: Analyzing trace with hash 436282523, now seen corresponding path program 1 times [2021-11-13 01:41:47,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:47,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013980863] [2021-11-13 01:41:47,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:47,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:47,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:47,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013980863] [2021-11-13 01:41:47,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013980863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:47,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:47,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:47,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628678627] [2021-11-13 01:41:47,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:47,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:47,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:47,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:47,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:47,463 INFO L87 Difference]: Start difference. First operand 544 states and 686 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) [2021-11-13 01:41:48,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:48,286 INFO L93 Difference]: Finished difference Result 1065 states and 1344 transitions. [2021-11-13 01:41:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:41:48,286 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 [2021-11-13 01:41:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:48,292 INFO L225 Difference]: With dead ends: 1065 [2021-11-13 01:41:48,292 INFO L226 Difference]: Without dead ends: 978 [2021-11-13 01:41:48,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:41:48,293 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 1322 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 424.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.96ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 541.03ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:48,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1322 Valid, 1384 Invalid, 1099 Unknown, 0 Unchecked, 4.96ms Time], IncrementalHoareTripleChecker [63 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 541.03ms Time] [2021-11-13 01:41:48,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-11-13 01:41:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 543. [2021-11-13 01:41:48,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 527 states have (on average 1.2979127134724857) internal successors, (684), 542 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 684 transitions. [2021-11-13 01:41:48,381 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 684 transitions. Word has length 80 [2021-11-13 01:41:48,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:48,381 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 684 transitions. [2021-11-13 01:41:48,382 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) [2021-11-13 01:41:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 684 transitions. [2021-11-13 01:41:48,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 01:41:48,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:48,383 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] [2021-11-13 01:41:48,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 01:41:48,383 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:48,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:48,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1402771346, now seen corresponding path program 1 times [2021-11-13 01:41:48,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:48,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227525030] [2021-11-13 01:41:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:48,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:48,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:48,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227525030] [2021-11-13 01:41:48,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227525030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:48,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:48,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:48,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289939293] [2021-11-13 01:41:48,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:48,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:48,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:48,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:48,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:48,502 INFO L87 Difference]: Start difference. First operand 543 states and 684 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-13 01:41:49,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:49,480 INFO L93 Difference]: Finished difference Result 1070 states and 1348 transitions. [2021-11-13 01:41:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:41:49,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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 [2021-11-13 01:41:49,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:49,484 INFO L225 Difference]: With dead ends: 1070 [2021-11-13 01:41:49,484 INFO L226 Difference]: Without dead ends: 978 [2021-11-13 01:41:49,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:41:49,485 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1606 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 553.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.82ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 706.39ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:49,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1606 Valid, 1731 Invalid, 1308 Unknown, 0 Unchecked, 4.82ms Time], IncrementalHoareTripleChecker [66 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 706.39ms Time] [2021-11-13 01:41:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-11-13 01:41:49,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 543. [2021-11-13 01:41:49,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 527 states have (on average 1.2941176470588236) internal successors, (682), 542 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 682 transitions. [2021-11-13 01:41:49,577 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 682 transitions. Word has length 81 [2021-11-13 01:41:49,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:49,577 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 682 transitions. [2021-11-13 01:41:49,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-13 01:41:49,578 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 682 transitions. [2021-11-13 01:41:49,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 01:41:49,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:49,579 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] [2021-11-13 01:41:49,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 01:41:49,580 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash -737160558, now seen corresponding path program 1 times [2021-11-13 01:41:49,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:49,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781868572] [2021-11-13 01:41:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:49,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:49,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:49,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781868572] [2021-11-13 01:41:49,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781868572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:49,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:49,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:49,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839154299] [2021-11-13 01:41:49,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:49,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:49,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:49,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:49,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:49,696 INFO L87 Difference]: Start difference. First operand 543 states and 682 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-13 01:41:50,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:50,732 INFO L93 Difference]: Finished difference Result 1067 states and 1343 transitions. [2021-11-13 01:41:50,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:41:50,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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 [2021-11-13 01:41:50,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:50,737 INFO L225 Difference]: With dead ends: 1067 [2021-11-13 01:41:50,737 INFO L226 Difference]: Without dead ends: 978 [2021-11-13 01:41:50,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:41:50,738 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1603 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 577.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.21ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 701.18ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:50,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 1727 Invalid, 1308 Unknown, 0 Unchecked, 6.21ms Time], IncrementalHoareTripleChecker [66 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 701.18ms Time] [2021-11-13 01:41:50,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-11-13 01:41:50,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 543. [2021-11-13 01:41:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 527 states have (on average 1.2922201138519924) internal successors, (681), 542 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 681 transitions. [2021-11-13 01:41:50,838 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 681 transitions. Word has length 81 [2021-11-13 01:41:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:50,839 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 681 transitions. [2021-11-13 01:41:50,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-13 01:41:50,839 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 681 transitions. [2021-11-13 01:41:50,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 01:41:50,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:50,841 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] [2021-11-13 01:41:50,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 01:41:50,841 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:50,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:50,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1762485042, now seen corresponding path program 1 times [2021-11-13 01:41:50,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:50,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126308696] [2021-11-13 01:41:50,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:50,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:50,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:50,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:50,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126308696] [2021-11-13 01:41:50,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126308696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:50,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:50,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:50,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556808180] [2021-11-13 01:41:50,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:50,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:50,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:50,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:50,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:50,954 INFO L87 Difference]: Start difference. First operand 543 states and 681 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-13 01:41:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:51,873 INFO L93 Difference]: Finished difference Result 1067 states and 1342 transitions. [2021-11-13 01:41:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:41:51,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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 [2021-11-13 01:41:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:51,892 INFO L225 Difference]: With dead ends: 1067 [2021-11-13 01:41:51,892 INFO L226 Difference]: Without dead ends: 978 [2021-11-13 01:41:51,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:41:51,894 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1313 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 471.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.18ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 587.91ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:51,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 1387 Invalid, 1088 Unknown, 0 Unchecked, 5.18ms Time], IncrementalHoareTripleChecker [63 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 587.91ms Time] [2021-11-13 01:41:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-11-13 01:41:51,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 543. [2021-11-13 01:41:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 527 states have (on average 1.2903225806451613) internal successors, (680), 542 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 680 transitions. [2021-11-13 01:41:51,983 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 680 transitions. Word has length 81 [2021-11-13 01:41:51,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:51,984 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 680 transitions. [2021-11-13 01:41:51,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-13 01:41:51,984 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 680 transitions. [2021-11-13 01:41:51,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 01:41:51,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:51,986 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] [2021-11-13 01:41:51,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 01:41:51,986 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:51,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:51,987 INFO L85 PathProgramCache]: Analyzing trace with hash 902080530, now seen corresponding path program 1 times [2021-11-13 01:41:51,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:51,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257236732] [2021-11-13 01:41:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:51,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:52,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:52,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257236732] [2021-11-13 01:41:52,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257236732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:52,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:52,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:52,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848091262] [2021-11-13 01:41:52,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:52,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:52,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:52,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:52,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:52,113 INFO L87 Difference]: Start difference. First operand 543 states and 680 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-13 01:41:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:52,911 INFO L93 Difference]: Finished difference Result 1102 states and 1395 transitions. [2021-11-13 01:41:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:41:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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 [2021-11-13 01:41:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:52,916 INFO L225 Difference]: With dead ends: 1102 [2021-11-13 01:41:52,917 INFO L226 Difference]: Without dead ends: 1002 [2021-11-13 01:41:52,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:41:52,918 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 1540 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 436.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 537.72ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:52,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1540 Valid, 1758 Invalid, 1238 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [36 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 537.72ms Time] [2021-11-13 01:41:52,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-11-13 01:41:53,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 543. [2021-11-13 01:41:53,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 527 states have (on average 1.28842504743833) internal successors, (679), 542 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 679 transitions. [2021-11-13 01:41:53,038 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 679 transitions. Word has length 81 [2021-11-13 01:41:53,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:53,039 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 679 transitions. [2021-11-13 01:41:53,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-13 01:41:53,039 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 679 transitions. [2021-11-13 01:41:53,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 01:41:53,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:53,041 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] [2021-11-13 01:41:53,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 01:41:53,042 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:53,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1939466226, now seen corresponding path program 1 times [2021-11-13 01:41:53,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:53,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016969340] [2021-11-13 01:41:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:53,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:53,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:53,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016969340] [2021-11-13 01:41:53,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016969340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:53,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:53,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:53,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456162086] [2021-11-13 01:41:53,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:53,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:53,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:53,175 INFO L87 Difference]: Start difference. First operand 543 states and 679 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-13 01:41:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:54,072 INFO L93 Difference]: Finished difference Result 1098 states and 1390 transitions. [2021-11-13 01:41:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:41:54,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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 [2021-11-13 01:41:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:54,077 INFO L225 Difference]: With dead ends: 1098 [2021-11-13 01:41:54,077 INFO L226 Difference]: Without dead ends: 1002 [2021-11-13 01:41:54,078 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 [2021-11-13 01:41:54,079 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 1575 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 490.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.22ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 597.49ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:54,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 1761 Invalid, 1170 Unknown, 0 Unchecked, 5.22ms Time], IncrementalHoareTripleChecker [38 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 597.49ms Time] [2021-11-13 01:41:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-11-13 01:41:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 543. [2021-11-13 01:41:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 527 states have (on average 1.2865275142314991) internal successors, (678), 542 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 678 transitions. [2021-11-13 01:41:54,182 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 678 transitions. Word has length 81 [2021-11-13 01:41:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:54,182 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 678 transitions. [2021-11-13 01:41:54,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-13 01:41:54,183 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 678 transitions. [2021-11-13 01:41:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:41:54,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:54,184 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] [2021-11-13 01:41:54,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-13 01:41:54,185 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1416899414, now seen corresponding path program 1 times [2021-11-13 01:41:54,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:54,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127672260] [2021-11-13 01:41:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:54,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:54,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:54,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127672260] [2021-11-13 01:41:54,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127672260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:54,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:54,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:41:54,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957921463] [2021-11-13 01:41:54,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:54,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:54,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:54,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:54,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:54,304 INFO L87 Difference]: Start difference. First operand 543 states and 678 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) [2021-11-13 01:41:55,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:55,264 INFO L93 Difference]: Finished difference Result 984 states and 1227 transitions. [2021-11-13 01:41:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:41:55,265 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 [2021-11-13 01:41:55,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:55,270 INFO L225 Difference]: With dead ends: 984 [2021-11-13 01:41:55,270 INFO L226 Difference]: Without dead ends: 978 [2021-11-13 01:41:55,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:41:55,271 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 1589 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 526.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 644.77ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:55,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 1816 Invalid, 1325 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [66 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 644.77ms Time] [2021-11-13 01:41:55,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-11-13 01:41:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 543. [2021-11-13 01:41:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 527 states have (on average 1.2827324478178368) internal successors, (676), 542 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 676 transitions. [2021-11-13 01:41:55,378 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 676 transitions. Word has length 82 [2021-11-13 01:41:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:55,378 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 676 transitions. [2021-11-13 01:41:55,378 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) [2021-11-13 01:41:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 676 transitions. [2021-11-13 01:41:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:41:55,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:55,380 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] [2021-11-13 01:41:55,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-13 01:41:55,381 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:55,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:55,381 INFO L85 PathProgramCache]: Analyzing trace with hash 110550506, now seen corresponding path program 1 times [2021-11-13 01:41:55,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:55,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110638306] [2021-11-13 01:41:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:55,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:55,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:55,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110638306] [2021-11-13 01:41:55,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110638306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:55,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:55,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:41:55,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161633915] [2021-11-13 01:41:55,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:55,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:41:55,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:55,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:41:55,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:41:55,587 INFO L87 Difference]: Start difference. First operand 543 states and 676 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:57,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:57,414 INFO L93 Difference]: Finished difference Result 1533 states and 1954 transitions. [2021-11-13 01:41:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:41:57,416 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-13 01:41:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:57,421 INFO L225 Difference]: With dead ends: 1533 [2021-11-13 01:41:57,421 INFO L226 Difference]: Without dead ends: 1514 [2021-11-13 01:41:57,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:41:57,423 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 3261 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 810.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3261 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.26ms SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 973.95ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:57,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3261 Valid, 1942 Invalid, 1880 Unknown, 0 Unchecked, 11.26ms Time], IncrementalHoareTripleChecker [356 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 973.95ms Time] [2021-11-13 01:41:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-11-13 01:41:57,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 553. [2021-11-13 01:41:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 537 states have (on average 1.277467411545624) internal successors, (686), 552 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:57,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 686 transitions. [2021-11-13 01:41:57,533 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 686 transitions. Word has length 82 [2021-11-13 01:41:57,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:57,534 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 686 transitions. [2021-11-13 01:41:57,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:57,534 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 686 transitions. [2021-11-13 01:41:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:41:57,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:57,536 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] [2021-11-13 01:41:57,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-13 01:41:57,537 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:57,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:57,537 INFO L85 PathProgramCache]: Analyzing trace with hash -534325398, now seen corresponding path program 1 times [2021-11-13 01:41:57,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:57,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256503848] [2021-11-13 01:41:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:57,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:41:57,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:41:57,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256503848] [2021-11-13 01:41:57,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256503848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:57,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:57,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:41:57,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890503382] [2021-11-13 01:41:57,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:57,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:41:57,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:41:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:41:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:41:57,728 INFO L87 Difference]: Start difference. First operand 553 states and 686 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:59,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:59,817 INFO L93 Difference]: Finished difference Result 1445 states and 1831 transitions. [2021-11-13 01:41:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:41:59,817 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-13 01:41:59,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:59,824 INFO L225 Difference]: With dead ends: 1445 [2021-11-13 01:41:59,825 INFO L226 Difference]: Without dead ends: 1439 [2021-11-13 01:41:59,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:41:59,826 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 3282 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 869.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.99ms SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1053.89ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:59,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3282 Valid, 1882 Invalid, 1973 Unknown, 0 Unchecked, 12.99ms Time], IncrementalHoareTripleChecker [454 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1053.89ms Time] [2021-11-13 01:41:59,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2021-11-13 01:41:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 563. [2021-11-13 01:41:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 547 states have (on average 1.2723948811700183) internal successors, (696), 562 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 696 transitions. [2021-11-13 01:41:59,924 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 696 transitions. Word has length 82 [2021-11-13 01:41:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:59,924 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 696 transitions. [2021-11-13 01:41:59,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:41:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 696 transitions. [2021-11-13 01:41:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:41:59,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:59,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:59,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-13 01:41:59,927 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:41:59,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:59,927 INFO L85 PathProgramCache]: Analyzing trace with hash 148568362, now seen corresponding path program 1 times [2021-11-13 01:41:59,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:41:59,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400218173] [2021-11-13 01:41:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:59,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:41:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:00,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:00,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400218173] [2021-11-13 01:42:00,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400218173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:00,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:00,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:42:00,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767282811] [2021-11-13 01:42:00,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:00,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:42:00,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:00,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:42:00,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:42:00,044 INFO L87 Difference]: Start difference. First operand 563 states and 696 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) [2021-11-13 01:42:01,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:01,048 INFO L93 Difference]: Finished difference Result 1125 states and 1414 transitions. [2021-11-13 01:42:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:42:01,049 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 [2021-11-13 01:42:01,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:01,053 INFO L225 Difference]: With dead ends: 1125 [2021-11-13 01:42:01,053 INFO L226 Difference]: Without dead ends: 1012 [2021-11-13 01:42:01,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:42:01,054 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 1568 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 521.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.78ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 637.74ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:01,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1568 Valid, 2062 Invalid, 1384 Unknown, 0 Unchecked, 5.78ms Time], IncrementalHoareTripleChecker [38 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 637.74ms Time] [2021-11-13 01:42:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-11-13 01:42:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 563. [2021-11-13 01:42:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 547 states have (on average 1.2687385740402193) internal successors, (694), 562 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 694 transitions. [2021-11-13 01:42:01,178 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 694 transitions. Word has length 82 [2021-11-13 01:42:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:01,179 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 694 transitions. [2021-11-13 01:42:01,179 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) [2021-11-13 01:42:01,179 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 694 transitions. [2021-11-13 01:42:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:42:01,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:01,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:01,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-13 01:42:01,182 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:01,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:01,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1321164118, now seen corresponding path program 1 times [2021-11-13 01:42:01,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:01,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972253105] [2021-11-13 01:42:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:01,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:01,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:01,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972253105] [2021-11-13 01:42:01,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972253105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:01,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:01,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:42:01,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703864058] [2021-11-13 01:42:01,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:01,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:42:01,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:01,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:42:01,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:42:01,369 INFO L87 Difference]: Start difference. First operand 563 states and 694 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:03,571 INFO L93 Difference]: Finished difference Result 1712 states and 2183 transitions. [2021-11-13 01:42:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:42:03,571 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-13 01:42:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:03,577 INFO L225 Difference]: With dead ends: 1712 [2021-11-13 01:42:03,577 INFO L226 Difference]: Without dead ends: 1555 [2021-11-13 01:42:03,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:42:03,579 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 3074 mSDsluCounter, 2224 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 957.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3074 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.05ms SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1176.57ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:03,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3074 Valid, 2756 Invalid, 2472 Unknown, 0 Unchecked, 11.05ms Time], IncrementalHoareTripleChecker [299 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 1176.57ms Time] [2021-11-13 01:42:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-11-13 01:42:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 573. [2021-11-13 01:42:03,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 557 states have (on average 1.2639138240574506) internal successors, (704), 572 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:03,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 704 transitions. [2021-11-13 01:42:03,685 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 704 transitions. Word has length 82 [2021-11-13 01:42:03,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:03,685 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 704 transitions. [2021-11-13 01:42:03,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:03,686 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 704 transitions. [2021-11-13 01:42:03,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:42:03,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:03,687 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] [2021-11-13 01:42:03,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-13 01:42:03,688 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:03,688 INFO L85 PathProgramCache]: Analyzing trace with hash -378154710, now seen corresponding path program 1 times [2021-11-13 01:42:03,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:03,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770578562] [2021-11-13 01:42:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:03,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:03,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:03,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770578562] [2021-11-13 01:42:03,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770578562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:03,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:03,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:42:03,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461332255] [2021-11-13 01:42:03,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:03,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:42:03,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:42:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:42:03,807 INFO L87 Difference]: Start difference. First operand 573 states and 704 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) [2021-11-13 01:42:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:04,836 INFO L93 Difference]: Finished difference Result 1090 states and 1356 transitions. [2021-11-13 01:42:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:42:04,836 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 [2021-11-13 01:42:04,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:04,841 INFO L225 Difference]: With dead ends: 1090 [2021-11-13 01:42:04,842 INFO L226 Difference]: Without dead ends: 998 [2021-11-13 01:42:04,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:42:04,843 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 1568 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 511.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.36ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 623.23ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:04,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1568 Valid, 1868 Invalid, 1331 Unknown, 0 Unchecked, 5.36ms Time], IncrementalHoareTripleChecker [66 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 623.23ms Time] [2021-11-13 01:42:04,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-11-13 01:42:04,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 573. [2021-11-13 01:42:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 557 states have (on average 1.2621184919210053) internal successors, (703), 572 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 703 transitions. [2021-11-13 01:42:04,993 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 703 transitions. Word has length 82 [2021-11-13 01:42:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:04,993 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 703 transitions. [2021-11-13 01:42:04,993 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) [2021-11-13 01:42:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 703 transitions. [2021-11-13 01:42:04,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:42:04,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:04,995 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] [2021-11-13 01:42:04,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-13 01:42:04,996 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash 637597674, now seen corresponding path program 1 times [2021-11-13 01:42:04,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:04,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775867138] [2021-11-13 01:42:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:04,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:05,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:05,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775867138] [2021-11-13 01:42:05,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775867138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:05,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:05,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:42:05,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632924703] [2021-11-13 01:42:05,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:05,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:42:05,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:05,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:42:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:42:05,110 INFO L87 Difference]: Start difference. First operand 573 states and 703 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) [2021-11-13 01:42:06,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:06,156 INFO L93 Difference]: Finished difference Result 1127 states and 1408 transitions. [2021-11-13 01:42:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:42:06,156 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 [2021-11-13 01:42:06,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:06,161 INFO L225 Difference]: With dead ends: 1127 [2021-11-13 01:42:06,162 INFO L226 Difference]: Without dead ends: 1022 [2021-11-13 01:42:06,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:42:06,163 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 1083 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 533.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.57ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 656.13ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:06,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 2048 Invalid, 1423 Unknown, 0 Unchecked, 5.57ms Time], IncrementalHoareTripleChecker [26 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 656.13ms Time] [2021-11-13 01:42:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-11-13 01:42:06,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 573. [2021-11-13 01:42:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 557 states have (on average 1.26032315978456) internal successors, (702), 572 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 702 transitions. [2021-11-13 01:42:06,273 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 702 transitions. Word has length 82 [2021-11-13 01:42:06,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:06,274 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 702 transitions. [2021-11-13 01:42:06,274 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) [2021-11-13 01:42:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 702 transitions. [2021-11-13 01:42:06,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:42:06,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:06,276 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] [2021-11-13 01:42:06,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-13 01:42:06,276 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:06,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:06,277 INFO L85 PathProgramCache]: Analyzing trace with hash -586374390, now seen corresponding path program 1 times [2021-11-13 01:42:06,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:06,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399483213] [2021-11-13 01:42:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:06,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:06,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:06,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399483213] [2021-11-13 01:42:06,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399483213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:06,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:06,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:42:06,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073167937] [2021-11-13 01:42:06,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:06,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:42:06,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:42:06,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:42:06,463 INFO L87 Difference]: Start difference. First operand 573 states and 702 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:08,608 INFO L93 Difference]: Finished difference Result 1531 states and 1937 transitions. [2021-11-13 01:42:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:42:08,609 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-13 01:42:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:08,613 INFO L225 Difference]: With dead ends: 1531 [2021-11-13 01:42:08,613 INFO L226 Difference]: Without dead ends: 1439 [2021-11-13 01:42:08,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:42:08,615 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 3103 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 870.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3103 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.49ms SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1048.59ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:08,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3103 Valid, 2114 Invalid, 2049 Unknown, 0 Unchecked, 9.49ms Time], IncrementalHoareTripleChecker [435 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 1048.59ms Time] [2021-11-13 01:42:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2021-11-13 01:42:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 578. [2021-11-13 01:42:08,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 562 states have (on average 1.2580071174377223) internal successors, (707), 577 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 707 transitions. [2021-11-13 01:42:08,732 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 707 transitions. Word has length 82 [2021-11-13 01:42:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:08,732 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 707 transitions. [2021-11-13 01:42:08,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 707 transitions. [2021-11-13 01:42:08,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:42:08,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:08,734 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] [2021-11-13 01:42:08,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-13 01:42:08,734 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:08,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1377145907, now seen corresponding path program 1 times [2021-11-13 01:42:08,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:08,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298836265] [2021-11-13 01:42:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:08,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:09,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:09,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298836265] [2021-11-13 01:42:09,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298836265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:09,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:09,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-13 01:42:09,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533979831] [2021-11-13 01:42:09,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:09,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 01:42:09,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:09,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 01:42:09,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:42:09,379 INFO L87 Difference]: Start difference. First operand 578 states and 707 transitions. Second operand has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 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) [2021-11-13 01:42:11,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:11,510 INFO L93 Difference]: Finished difference Result 984 states and 1213 transitions. [2021-11-13 01:42:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 01:42:11,510 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 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 [2021-11-13 01:42:11,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:11,513 INFO L225 Difference]: With dead ends: 984 [2021-11-13 01:42:11,513 INFO L226 Difference]: Without dead ends: 827 [2021-11-13 01:42:11,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 01:42:11,514 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 2010 mSDsluCounter, 6140 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 697.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 6674 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.53ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 823.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:11,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 6674 Invalid, 1342 Unknown, 0 Unchecked, 21.53ms Time], IncrementalHoareTripleChecker [38 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 823.60ms Time] [2021-11-13 01:42:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-11-13 01:42:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 548. [2021-11-13 01:42:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 532 states have (on average 1.255639097744361) internal successors, (668), 547 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 668 transitions. [2021-11-13 01:42:11,694 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 668 transitions. Word has length 83 [2021-11-13 01:42:11,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:11,695 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 668 transitions. [2021-11-13 01:42:11,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 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) [2021-11-13 01:42:11,696 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 668 transitions. [2021-11-13 01:42:11,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:42:11,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:11,697 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] [2021-11-13 01:42:11,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-13 01:42:11,698 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:11,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:11,699 INFO L85 PathProgramCache]: Analyzing trace with hash -28134202, now seen corresponding path program 1 times [2021-11-13 01:42:11,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:11,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258602250] [2021-11-13 01:42:11,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:11,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:11,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:11,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258602250] [2021-11-13 01:42:11,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258602250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:11,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:11,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:42:11,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379159414] [2021-11-13 01:42:11,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:11,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:42:11,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:42:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:42:11,818 INFO L87 Difference]: Start difference. First operand 548 states and 668 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) [2021-11-13 01:42:12,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:12,895 INFO L93 Difference]: Finished difference Result 1009 states and 1246 transitions. [2021-11-13 01:42:12,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:42:12,896 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 [2021-11-13 01:42:12,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:12,897 INFO L225 Difference]: With dead ends: 1009 [2021-11-13 01:42:12,897 INFO L226 Difference]: Without dead ends: 990 [2021-11-13 01:42:12,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:42:12,899 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 1843 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 492.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.98ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 600.66ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:12,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1843 Valid, 1627 Invalid, 1151 Unknown, 0 Unchecked, 5.98ms Time], IncrementalHoareTripleChecker [52 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 600.66ms Time] [2021-11-13 01:42:12,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2021-11-13 01:42:13,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 543. [2021-11-13 01:42:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 527 states have (on average 1.25426944971537) internal successors, (661), 542 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 661 transitions. [2021-11-13 01:42:13,016 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 661 transitions. Word has length 83 [2021-11-13 01:42:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:13,016 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 661 transitions. [2021-11-13 01:42:13,016 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) [2021-11-13 01:42:13,016 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 661 transitions. [2021-11-13 01:42:13,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:42:13,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:13,018 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] [2021-11-13 01:42:13,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-13 01:42:13,018 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:13,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:13,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1042213600, now seen corresponding path program 1 times [2021-11-13 01:42:13,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:13,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011417406] [2021-11-13 01:42:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:13,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:13,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:13,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011417406] [2021-11-13 01:42:13,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011417406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:13,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:13,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:42:13,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242897934] [2021-11-13 01:42:13,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:13,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:42:13,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:13,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:42:13,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:42:13,119 INFO L87 Difference]: Start difference. First operand 543 states and 661 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) [2021-11-13 01:42:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:14,123 INFO L93 Difference]: Finished difference Result 1180 states and 1478 transitions. [2021-11-13 01:42:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:42:14,124 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 [2021-11-13 01:42:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:14,125 INFO L225 Difference]: With dead ends: 1180 [2021-11-13 01:42:14,125 INFO L226 Difference]: Without dead ends: 1023 [2021-11-13 01:42:14,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:42:14,126 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 1699 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 442.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.32ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 543.11ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:14,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 1825 Invalid, 1231 Unknown, 0 Unchecked, 5.32ms Time], IncrementalHoareTripleChecker [27 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 543.11ms Time] [2021-11-13 01:42:14,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2021-11-13 01:42:14,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 533. [2021-11-13 01:42:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 517 states have (on average 1.2553191489361701) internal successors, (649), 532 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 649 transitions. [2021-11-13 01:42:14,246 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 649 transitions. Word has length 83 [2021-11-13 01:42:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:14,246 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 649 transitions. [2021-11-13 01:42:14,247 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) [2021-11-13 01:42:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 649 transitions. [2021-11-13 01:42:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:42:14,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:14,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:14,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-13 01:42:14,248 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash -199769875, now seen corresponding path program 1 times [2021-11-13 01:42:14,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:14,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980433274] [2021-11-13 01:42:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:14,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:15,508 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:15,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980433274] [2021-11-13 01:42:15,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980433274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:15,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:15,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-11-13 01:42:15,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868868646] [2021-11-13 01:42:15,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:15,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-13 01:42:15,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:15,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-13 01:42:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2021-11-13 01:42:15,510 INFO L87 Difference]: Start difference. First operand 533 states and 649 transitions. Second operand has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 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) [2021-11-13 01:42:21,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:21,734 INFO L93 Difference]: Finished difference Result 1585 states and 1970 transitions. [2021-11-13 01:42:21,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-13 01:42:21,735 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 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 [2021-11-13 01:42:21,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:21,737 INFO L225 Difference]: With dead ends: 1585 [2021-11-13 01:42:21,737 INFO L226 Difference]: Without dead ends: 1498 [2021-11-13 01:42:21,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=444, Invalid=2636, Unknown=0, NotChecked=0, Total=3080 [2021-11-13 01:42:21,738 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 3311 mSDsluCounter, 14777 mSDsCounter, 0 mSdLazyCounter, 7381 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3450.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3311 SdHoareTripleChecker+Valid, 15534 SdHoareTripleChecker+Invalid, 7511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.97ms SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 7381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4038.78ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:21,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3311 Valid, 15534 Invalid, 7511 Unknown, 0 Unchecked, 36.97ms Time], IncrementalHoareTripleChecker [130 Valid, 7381 Invalid, 0 Unknown, 0 Unchecked, 4038.78ms Time] [2021-11-13 01:42:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-11-13 01:42:21,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 548. [2021-11-13 01:42:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 532 states have (on average 1.2575187969924813) internal successors, (669), 547 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 669 transitions. [2021-11-13 01:42:21,896 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 669 transitions. Word has length 83 [2021-11-13 01:42:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:21,896 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 669 transitions. [2021-11-13 01:42:21,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 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) [2021-11-13 01:42:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 669 transitions. [2021-11-13 01:42:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:42:21,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:21,897 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] [2021-11-13 01:42:21,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-13 01:42:21,898 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:21,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1097921229, now seen corresponding path program 1 times [2021-11-13 01:42:21,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:21,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928199680] [2021-11-13 01:42:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:21,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:22,204 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:22,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928199680] [2021-11-13 01:42:22,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928199680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:22,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:22,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:42:22,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626206961] [2021-11-13 01:42:22,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:22,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:42:22,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:42:22,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:42:22,205 INFO L87 Difference]: Start difference. First operand 548 states and 669 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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) [2021-11-13 01:42:23,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:23,877 INFO L93 Difference]: Finished difference Result 1222 states and 1531 transitions. [2021-11-13 01:42:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:42:23,878 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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 [2021-11-13 01:42:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:23,879 INFO L225 Difference]: With dead ends: 1222 [2021-11-13 01:42:23,879 INFO L226 Difference]: Without dead ends: 1135 [2021-11-13 01:42:23,880 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 [2021-11-13 01:42:23,880 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 2132 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 643.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2132 SdHoareTripleChecker+Valid, 3923 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.86ms SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 765.86ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:23,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2132 Valid, 3923 Invalid, 1493 Unknown, 0 Unchecked, 8.86ms Time], IncrementalHoareTripleChecker [97 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 765.86ms Time] [2021-11-13 01:42:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-13 01:42:24,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 547. [2021-11-13 01:42:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 531 states have (on average 1.256120527306968) internal successors, (667), 546 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 667 transitions. [2021-11-13 01:42:24,073 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 667 transitions. Word has length 83 [2021-11-13 01:42:24,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:24,074 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 667 transitions. [2021-11-13 01:42:24,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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) [2021-11-13 01:42:24,074 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 667 transitions. [2021-11-13 01:42:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:42:24,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:24,076 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] [2021-11-13 01:42:24,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-13 01:42:24,076 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:24,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:24,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1397509459, now seen corresponding path program 1 times [2021-11-13 01:42:24,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:24,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130294257] [2021-11-13 01:42:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:24,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:24,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:24,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:24,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130294257] [2021-11-13 01:42:24,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130294257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:24,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:24,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:42:24,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729845763] [2021-11-13 01:42:24,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:24,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:42:24,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:42:24,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:42:24,397 INFO L87 Difference]: Start difference. First operand 547 states and 667 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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) [2021-11-13 01:42:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:26,146 INFO L93 Difference]: Finished difference Result 1227 states and 1535 transitions. [2021-11-13 01:42:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:42:26,147 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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 [2021-11-13 01:42:26,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:26,148 INFO L225 Difference]: With dead ends: 1227 [2021-11-13 01:42:26,148 INFO L226 Difference]: Without dead ends: 1140 [2021-11-13 01:42:26,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:42:26,149 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 2342 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 653.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.95ms SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 774.65ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:26,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 3606 Invalid, 1438 Unknown, 0 Unchecked, 8.95ms Time], IncrementalHoareTripleChecker [100 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 774.65ms Time] [2021-11-13 01:42:26,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-11-13 01:42:26,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 546. [2021-11-13 01:42:26,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 530 states have (on average 1.2547169811320755) internal successors, (665), 545 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:26,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 665 transitions. [2021-11-13 01:42:26,288 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 665 transitions. Word has length 83 [2021-11-13 01:42:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:26,288 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 665 transitions. [2021-11-13 01:42:26,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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) [2021-11-13 01:42:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 665 transitions. [2021-11-13 01:42:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:42:26,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:26,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:26,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-13 01:42:26,291 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:26,291 INFO L85 PathProgramCache]: Analyzing trace with hash -674509507, now seen corresponding path program 1 times [2021-11-13 01:42:26,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:26,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608772932] [2021-11-13 01:42:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:26,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:26,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:26,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608772932] [2021-11-13 01:42:26,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608772932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:26,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:26,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:42:26,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412741529] [2021-11-13 01:42:26,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:26,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:42:26,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:26,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:42:26,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:42:26,388 INFO L87 Difference]: Start difference. First operand 546 states and 665 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) [2021-11-13 01:42:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:27,610 INFO L93 Difference]: Finished difference Result 1054 states and 1304 transitions. [2021-11-13 01:42:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:42:27,610 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 [2021-11-13 01:42:27,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:27,611 INFO L225 Difference]: With dead ends: 1054 [2021-11-13 01:42:27,612 INFO L226 Difference]: Without dead ends: 962 [2021-11-13 01:42:27,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:42:27,613 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 1647 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 485.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.10ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 590.69ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:27,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 1649 Invalid, 1237 Unknown, 0 Unchecked, 7.10ms Time], IncrementalHoareTripleChecker [85 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 590.69ms Time] [2021-11-13 01:42:27,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-11-13 01:42:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 541. [2021-11-13 01:42:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 525 states have (on average 1.2552380952380953) internal successors, (659), 540 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 659 transitions. [2021-11-13 01:42:27,771 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 659 transitions. Word has length 83 [2021-11-13 01:42:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:27,771 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 659 transitions. [2021-11-13 01:42:27,771 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) [2021-11-13 01:42:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 659 transitions. [2021-11-13 01:42:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:42:27,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:27,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:27,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-13 01:42:27,773 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1140659213, now seen corresponding path program 1 times [2021-11-13 01:42:27,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:27,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996934308] [2021-11-13 01:42:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:27,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:28,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:28,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996934308] [2021-11-13 01:42:28,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996934308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:28,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:28,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-13 01:42:28,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131177802] [2021-11-13 01:42:28,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:28,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-13 01:42:28,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:28,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-13 01:42:28,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-11-13 01:42:28,476 INFO L87 Difference]: Start difference. First operand 541 states and 659 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 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) [2021-11-13 01:42:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:32,916 INFO L93 Difference]: Finished difference Result 1190 states and 1454 transitions. [2021-11-13 01:42:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-13 01:42:32,917 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 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 [2021-11-13 01:42:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:32,918 INFO L225 Difference]: With dead ends: 1190 [2021-11-13 01:42:32,918 INFO L226 Difference]: Without dead ends: 1100 [2021-11-13 01:42:32,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=392, Invalid=2058, Unknown=0, NotChecked=0, Total=2450 [2021-11-13 01:42:32,920 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 2713 mSDsluCounter, 11688 mSDsCounter, 0 mSdLazyCounter, 5781 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2483.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2713 SdHoareTripleChecker+Valid, 12410 SdHoareTripleChecker+Invalid, 5927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.76ms SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 5781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2933.18ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:32,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2713 Valid, 12410 Invalid, 5927 Unknown, 0 Unchecked, 30.76ms Time], IncrementalHoareTripleChecker [146 Valid, 5781 Invalid, 0 Unknown, 0 Unchecked, 2933.18ms Time] [2021-11-13 01:42:32,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-11-13 01:42:33,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 556. [2021-11-13 01:42:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 540 states have (on average 1.2555555555555555) internal successors, (678), 555 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:33,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 678 transitions. [2021-11-13 01:42:33,076 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 678 transitions. Word has length 83 [2021-11-13 01:42:33,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:33,076 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 678 transitions. [2021-11-13 01:42:33,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 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) [2021-11-13 01:42:33,077 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 678 transitions. [2021-11-13 01:42:33,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:42:33,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:33,077 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] [2021-11-13 01:42:33,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-13 01:42:33,078 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:33,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:33,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2096908269, now seen corresponding path program 1 times [2021-11-13 01:42:33,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:33,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520030373] [2021-11-13 01:42:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:33,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:33,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:33,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520030373] [2021-11-13 01:42:33,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520030373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:33,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:33,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:42:33,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295217579] [2021-11-13 01:42:33,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:33,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:42:33,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:33,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:42:33,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:42:33,360 INFO L87 Difference]: Start difference. First operand 556 states and 678 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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) [2021-11-13 01:42:34,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:34,287 INFO L93 Difference]: Finished difference Result 874 states and 1084 transitions. [2021-11-13 01:42:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:42:34,288 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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 [2021-11-13 01:42:34,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:34,289 INFO L225 Difference]: With dead ends: 874 [2021-11-13 01:42:34,289 INFO L226 Difference]: Without dead ends: 733 [2021-11-13 01:42:34,289 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 [2021-11-13 01:42:34,290 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1702 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 224.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.97ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 265.85ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:34,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 3397 Invalid, 458 Unknown, 0 Unchecked, 5.97ms Time], IncrementalHoareTripleChecker [21 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 265.85ms Time] [2021-11-13 01:42:34,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-11-13 01:42:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 501. [2021-11-13 01:42:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 486 states have (on average 1.2530864197530864) internal successors, (609), 500 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 609 transitions. [2021-11-13 01:42:34,450 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 609 transitions. Word has length 83 [2021-11-13 01:42:34,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:34,450 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 609 transitions. [2021-11-13 01:42:34,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 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) [2021-11-13 01:42:34,450 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 609 transitions. [2021-11-13 01:42:34,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 01:42:34,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:34,451 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] [2021-11-13 01:42:34,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-13 01:42:34,452 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:34,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1381404559, now seen corresponding path program 1 times [2021-11-13 01:42:34,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:34,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377416929] [2021-11-13 01:42:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:34,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:34,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:34,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377416929] [2021-11-13 01:42:34,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377416929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:34,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:34,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:42:34,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744805150] [2021-11-13 01:42:34,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:34,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:42:34,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:34,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:42:34,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:42:34,715 INFO L87 Difference]: Start difference. First operand 501 states and 609 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) [2021-11-13 01:42:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:35,558 INFO L93 Difference]: Finished difference Result 851 states and 1042 transitions. [2021-11-13 01:42:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:42:35,559 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 [2021-11-13 01:42:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:35,560 INFO L225 Difference]: With dead ends: 851 [2021-11-13 01:42:35,560 INFO L226 Difference]: Without dead ends: 748 [2021-11-13 01:42:35,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:42:35,561 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 2093 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 229.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.82ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 274.99ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:35,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2093 Valid, 2428 Invalid, 545 Unknown, 0 Unchecked, 4.82ms Time], IncrementalHoareTripleChecker [52 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 274.99ms Time] [2021-11-13 01:42:35,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-11-13 01:42:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 477. [2021-11-13 01:42:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 463 states have (on average 1.2505399568034556) internal successors, (579), 476 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 579 transitions. [2021-11-13 01:42:35,694 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 579 transitions. Word has length 84 [2021-11-13 01:42:35,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:35,694 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 579 transitions. [2021-11-13 01:42:35,695 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) [2021-11-13 01:42:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 579 transitions. [2021-11-13 01:42:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 01:42:35,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:35,695 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] [2021-11-13 01:42:35,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-13 01:42:35,696 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:35,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:35,696 INFO L85 PathProgramCache]: Analyzing trace with hash -142238409, now seen corresponding path program 1 times [2021-11-13 01:42:35,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:35,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513695133] [2021-11-13 01:42:35,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:35,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:36,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:36,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513695133] [2021-11-13 01:42:36,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513695133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:36,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:36,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-13 01:42:36,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446168166] [2021-11-13 01:42:36,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:36,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 01:42:36,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:36,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 01:42:36,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:42:36,316 INFO L87 Difference]: Start difference. First operand 477 states and 579 transitions. Second operand has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 18 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) [2021-11-13 01:42:38,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:38,761 INFO L93 Difference]: Finished difference Result 1429 states and 1782 transitions. [2021-11-13 01:42:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:42:38,761 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 18 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 [2021-11-13 01:42:38,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:38,763 INFO L225 Difference]: With dead ends: 1429 [2021-11-13 01:42:38,763 INFO L226 Difference]: Without dead ends: 1307 [2021-11-13 01:42:38,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 01:42:38,764 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 1446 mSDsluCounter, 11005 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 926.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 11593 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.58ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1092.62ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:38,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 11593 Invalid, 2095 Unknown, 0 Unchecked, 18.58ms Time], IncrementalHoareTripleChecker [34 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 1092.62ms Time] [2021-11-13 01:42:38,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2021-11-13 01:42:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 468. [2021-11-13 01:42:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 454 states have (on average 1.2444933920704846) internal successors, (565), 467 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 565 transitions. [2021-11-13 01:42:38,908 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 565 transitions. Word has length 84 [2021-11-13 01:42:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:38,908 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 565 transitions. [2021-11-13 01:42:38,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 18 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) [2021-11-13 01:42:38,908 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 565 transitions. [2021-11-13 01:42:38,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 01:42:38,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:38,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:38,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-13 01:42:38,909 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:38,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:38,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2131684943, now seen corresponding path program 1 times [2021-11-13 01:42:38,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:38,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527653291] [2021-11-13 01:42:38,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:38,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:40,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:40,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527653291] [2021-11-13 01:42:40,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527653291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:40,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:40,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-13 01:42:40,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455536188] [2021-11-13 01:42:40,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:40,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-13 01:42:40,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:40,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-13 01:42:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2021-11-13 01:42:40,070 INFO L87 Difference]: Start difference. First operand 468 states and 565 transitions. Second operand has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 28 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) [2021-11-13 01:42:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:44,597 INFO L93 Difference]: Finished difference Result 1114 states and 1349 transitions. [2021-11-13 01:42:44,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 01:42:44,598 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 28 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 [2021-11-13 01:42:44,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:44,599 INFO L225 Difference]: With dead ends: 1114 [2021-11-13 01:42:44,599 INFO L226 Difference]: Without dead ends: 1024 [2021-11-13 01:42:44,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=414, Invalid=2342, Unknown=0, NotChecked=0, Total=2756 [2021-11-13 01:42:44,600 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 2053 mSDsluCounter, 10352 mSDsCounter, 0 mSdLazyCounter, 5261 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2345.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 10913 SdHoareTripleChecker+Invalid, 5345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.72ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 5261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2744.87ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:44,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2053 Valid, 10913 Invalid, 5345 Unknown, 0 Unchecked, 25.72ms Time], IncrementalHoareTripleChecker [84 Valid, 5261 Invalid, 0 Unknown, 0 Unchecked, 2744.87ms Time] [2021-11-13 01:42:44,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-11-13 01:42:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 479. [2021-11-13 01:42:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 465 states have (on average 1.249462365591398) internal successors, (581), 478 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 581 transitions. [2021-11-13 01:42:44,745 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 581 transitions. Word has length 84 [2021-11-13 01:42:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:44,745 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 581 transitions. [2021-11-13 01:42:44,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 28 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) [2021-11-13 01:42:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 581 transitions. [2021-11-13 01:42:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 01:42:44,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:44,746 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] [2021-11-13 01:42:44,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-13 01:42:44,748 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:44,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1223733489, now seen corresponding path program 1 times [2021-11-13 01:42:44,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:44,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334938322] [2021-11-13 01:42:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:44,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:45,062 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:45,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334938322] [2021-11-13 01:42:45,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334938322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:45,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:45,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:42:45,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462322921] [2021-11-13 01:42:45,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:45,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:42:45,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:42:45,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:42:45,063 INFO L87 Difference]: Start difference. First operand 479 states and 581 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 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) [2021-11-13 01:42:47,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:47,146 INFO L93 Difference]: Finished difference Result 1711 states and 2157 transitions. [2021-11-13 01:42:47,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 01:42:47,152 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 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 [2021-11-13 01:42:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:47,154 INFO L225 Difference]: With dead ends: 1711 [2021-11-13 01:42:47,154 INFO L226 Difference]: Without dead ends: 1567 [2021-11-13 01:42:47,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-13 01:42:47,155 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 2093 mSDsluCounter, 6785 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 506.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 7479 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.31ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 603.78ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:47,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2093 Valid, 7479 Invalid, 1080 Unknown, 0 Unchecked, 12.31ms Time], IncrementalHoareTripleChecker [38 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 603.78ms Time] [2021-11-13 01:42:47,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2021-11-13 01:42:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 420. [2021-11-13 01:42:47,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 409 states have (on average 1.2371638141809291) internal successors, (506), 419 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 506 transitions. [2021-11-13 01:42:47,304 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 506 transitions. Word has length 84 [2021-11-13 01:42:47,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:47,304 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 506 transitions. [2021-11-13 01:42:47,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 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) [2021-11-13 01:42:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 506 transitions. [2021-11-13 01:42:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 01:42:47,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:47,306 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] [2021-11-13 01:42:47,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-13 01:42:47,306 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:47,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1559722417, now seen corresponding path program 1 times [2021-11-13 01:42:47,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:47,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860545838] [2021-11-13 01:42:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:47,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:47,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:47,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860545838] [2021-11-13 01:42:47,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860545838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:47,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:47,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-13 01:42:47,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197693369] [2021-11-13 01:42:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:47,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:42:47,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:42:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:42:47,747 INFO L87 Difference]: Start difference. First operand 420 states and 506 transitions. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 14 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) [2021-11-13 01:42:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:48,984 INFO L93 Difference]: Finished difference Result 721 states and 880 transitions. [2021-11-13 01:42:48,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 01:42:48,984 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 14 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 [2021-11-13 01:42:48,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:48,985 INFO L225 Difference]: With dead ends: 721 [2021-11-13 01:42:48,985 INFO L226 Difference]: Without dead ends: 564 [2021-11-13 01:42:48,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2021-11-13 01:42:48,986 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 1044 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 363.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.77ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 437.28ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:48,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 3083 Invalid, 797 Unknown, 0 Unchecked, 5.77ms Time], IncrementalHoareTripleChecker [37 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 437.28ms Time] [2021-11-13 01:42:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-13 01:42:49,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 405. [2021-11-13 01:42:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 394 states have (on average 1.233502538071066) internal successors, (486), 404 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 486 transitions. [2021-11-13 01:42:49,144 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 486 transitions. Word has length 84 [2021-11-13 01:42:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:49,144 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 486 transitions. [2021-11-13 01:42:49,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 14 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) [2021-11-13 01:42:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 486 transitions. [2021-11-13 01:42:49,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 01:42:49,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:49,145 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] [2021-11-13 01:42:49,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-13 01:42:49,145 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:49,145 INFO L85 PathProgramCache]: Analyzing trace with hash -282374679, now seen corresponding path program 1 times [2021-11-13 01:42:49,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:49,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389443233] [2021-11-13 01:42:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:49,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:49,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:49,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389443233] [2021-11-13 01:42:49,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389443233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:49,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:49,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:42:49,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947944066] [2021-11-13 01:42:49,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:49,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:42:49,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:49,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:42:49,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:42:49,423 INFO L87 Difference]: Start difference. First operand 405 states and 486 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 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) [2021-11-13 01:42:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:51,382 INFO L93 Difference]: Finished difference Result 1579 states and 1982 transitions. [2021-11-13 01:42:51,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 01:42:51,382 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 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 [2021-11-13 01:42:51,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:51,388 INFO L225 Difference]: With dead ends: 1579 [2021-11-13 01:42:51,389 INFO L226 Difference]: Without dead ends: 1485 [2021-11-13 01:42:51,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-11-13 01:42:51,392 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1980 mSDsluCounter, 4367 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 427.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1980 SdHoareTripleChecker+Valid, 4914 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.14ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 512.05ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:51,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1980 Valid, 4914 Invalid, 927 Unknown, 0 Unchecked, 9.14ms Time], IncrementalHoareTripleChecker [61 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 512.05ms Time] [2021-11-13 01:42:51,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2021-11-13 01:42:51,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 397. [2021-11-13 01:42:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 386 states have (on average 1.2305699481865284) internal successors, (475), 396 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 475 transitions. [2021-11-13 01:42:51,645 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 475 transitions. Word has length 84 [2021-11-13 01:42:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:51,645 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 475 transitions. [2021-11-13 01:42:51,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 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) [2021-11-13 01:42:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 475 transitions. [2021-11-13 01:42:51,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 01:42:51,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:51,649 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] [2021-11-13 01:42:51,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-13 01:42:51,650 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:51,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:51,652 INFO L85 PathProgramCache]: Analyzing trace with hash -101111601, now seen corresponding path program 1 times [2021-11-13 01:42:51,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:51,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651653411] [2021-11-13 01:42:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:51,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:51,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:51,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651653411] [2021-11-13 01:42:51,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651653411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:51,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:51,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:42:51,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147822803] [2021-11-13 01:42:51,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:51,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:42:51,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:42:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:42:51,925 INFO L87 Difference]: Start difference. First operand 397 states and 475 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) [2021-11-13 01:42:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:52,739 INFO L93 Difference]: Finished difference Result 696 states and 861 transitions. [2021-11-13 01:42:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:42:52,739 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 [2021-11-13 01:42:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:52,740 INFO L225 Difference]: With dead ends: 696 [2021-11-13 01:42:52,740 INFO L226 Difference]: Without dead ends: 585 [2021-11-13 01:42:52,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:42:52,742 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1369 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.47ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.28ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:52,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 1964 Invalid, 314 Unknown, 0 Unchecked, 4.47ms Time], IncrementalHoareTripleChecker [20 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 185.28ms Time] [2021-11-13 01:42:52,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-11-13 01:42:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 330. [2021-11-13 01:42:52,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 322 states have (on average 1.2298136645962734) internal successors, (396), 329 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 396 transitions. [2021-11-13 01:42:52,892 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 396 transitions. Word has length 84 [2021-11-13 01:42:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:52,892 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 396 transitions. [2021-11-13 01:42:52,892 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) [2021-11-13 01:42:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 396 transitions. [2021-11-13 01:42:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-13 01:42:52,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:52,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:52,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-13 01:42:52,893 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:52,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:52,893 INFO L85 PathProgramCache]: Analyzing trace with hash -379806907, now seen corresponding path program 1 times [2021-11-13 01:42:52,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:52,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763544870] [2021-11-13 01:42:52,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:52,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:53,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:53,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763544870] [2021-11-13 01:42:53,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763544870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:53,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:53,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:42:53,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349146512] [2021-11-13 01:42:53,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:53,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:42:53,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:42:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:42:53,227 INFO L87 Difference]: Start difference. First operand 330 states and 396 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:55,798 INFO L93 Difference]: Finished difference Result 1644 states and 2087 transitions. [2021-11-13 01:42:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 01:42:55,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-13 01:42:55,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:55,801 INFO L225 Difference]: With dead ends: 1644 [2021-11-13 01:42:55,801 INFO L226 Difference]: Without dead ends: 1531 [2021-11-13 01:42:55,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-13 01:42:55,802 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 1192 mSDsluCounter, 5470 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 535.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 5951 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.43ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 647.12ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:55,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1192 Valid, 5951 Invalid, 1132 Unknown, 0 Unchecked, 10.43ms Time], IncrementalHoareTripleChecker [29 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 647.12ms Time] [2021-11-13 01:42:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-11-13 01:42:55,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 290. [2021-11-13 01:42:55,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 284 states have (on average 1.204225352112676) internal successors, (342), 289 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 342 transitions. [2021-11-13 01:42:55,957 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 342 transitions. Word has length 85 [2021-11-13 01:42:55,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:55,957 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 342 transitions. [2021-11-13 01:42:55,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 342 transitions. [2021-11-13 01:42:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-13 01:42:55,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:55,958 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:55,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-13 01:42:55,959 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:55,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:55,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1570867187, now seen corresponding path program 1 times [2021-11-13 01:42:55,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:55,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328272549] [2021-11-13 01:42:55,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:55,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:56,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:56,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328272549] [2021-11-13 01:42:56,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328272549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:56,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:56,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:42:56,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133072850] [2021-11-13 01:42:56,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:56,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:42:56,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:42:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:42:56,227 INFO L87 Difference]: Start difference. First operand 290 states and 342 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:58,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:58,297 INFO L93 Difference]: Finished difference Result 1353 states and 1713 transitions. [2021-11-13 01:42:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 01:42:58,297 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-13 01:42:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:58,301 INFO L225 Difference]: With dead ends: 1353 [2021-11-13 01:42:58,302 INFO L226 Difference]: Without dead ends: 1256 [2021-11-13 01:42:58,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-13 01:42:58,303 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 1305 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 400.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 4466 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.23ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 485.14ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:58,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 4466 Invalid, 891 Unknown, 0 Unchecked, 8.23ms Time], IncrementalHoareTripleChecker [36 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 485.14ms Time] [2021-11-13 01:42:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-11-13 01:42:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 279. [2021-11-13 01:42:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 274 states have (on average 1.2007299270072993) internal successors, (329), 278 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 329 transitions. [2021-11-13 01:42:58,543 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 329 transitions. Word has length 85 [2021-11-13 01:42:58,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:58,543 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 329 transitions. [2021-11-13 01:42:58,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 329 transitions. [2021-11-13 01:42:58,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-13 01:42:58,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:58,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:58,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-13 01:42:58,545 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:58,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:58,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1029208973, now seen corresponding path program 1 times [2021-11-13 01:42:58,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:58,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521035930] [2021-11-13 01:42:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:58,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:58,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:58,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521035930] [2021-11-13 01:42:58,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521035930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:58,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:58,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 01:42:58,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904988509] [2021-11-13 01:42:58,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:58,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:42:58,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:58,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:42:58,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:42:58,801 INFO L87 Difference]: Start difference. First operand 279 states and 329 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:59,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:59,630 INFO L93 Difference]: Finished difference Result 561 states and 694 transitions. [2021-11-13 01:42:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:42:59,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-13 01:42:59,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:59,632 INFO L225 Difference]: With dead ends: 561 [2021-11-13 01:42:59,632 INFO L226 Difference]: Without dead ends: 419 [2021-11-13 01:42:59,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:42:59,633 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 1165 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.26ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:59,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1165 Valid, 791 Invalid, 169 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [15 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 127.26ms Time] [2021-11-13 01:42:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-13 01:42:59,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 223. [2021-11-13 01:42:59,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 221 states have (on average 1.1990950226244343) internal successors, (265), 222 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 265 transitions. [2021-11-13 01:42:59,844 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 265 transitions. Word has length 85 [2021-11-13 01:42:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:59,845 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 265 transitions. [2021-11-13 01:42:59,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 265 transitions. [2021-11-13 01:42:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-13 01:42:59,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:59,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:59,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-13 01:42:59,846 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:42:59,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:59,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1517009585, now seen corresponding path program 1 times [2021-11-13 01:42:59,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:59,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451585206] [2021-11-13 01:42:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:59,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:00,012 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:00,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451585206] [2021-11-13 01:43:00,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451585206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:00,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:00,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:43:00,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900591814] [2021-11-13 01:43:00,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:00,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:43:00,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:00,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:43:00,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:43:00,014 INFO L87 Difference]: Start difference. First operand 223 states and 265 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:02,099 INFO L93 Difference]: Finished difference Result 1157 states and 1484 transitions. [2021-11-13 01:43:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 01:43:02,100 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-13 01:43:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:02,101 INFO L225 Difference]: With dead ends: 1157 [2021-11-13 01:43:02,101 INFO L226 Difference]: Without dead ends: 1037 [2021-11-13 01:43:02,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-13 01:43:02,102 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1639 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 455.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 556.58ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:02,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1639 Valid, 905 Invalid, 943 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [109 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 556.58ms Time] [2021-11-13 01:43:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-11-13 01:43:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 233. [2021-11-13 01:43:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 231 states have (on average 1.1904761904761905) internal successors, (275), 232 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 275 transitions. [2021-11-13 01:43:02,319 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 275 transitions. Word has length 86 [2021-11-13 01:43:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:02,319 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 275 transitions. [2021-11-13 01:43:02,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 275 transitions. [2021-11-13 01:43:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 01:43:02,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:02,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:02,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-13 01:43:02,320 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:02,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1606087513, now seen corresponding path program 1 times [2021-11-13 01:43:02,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:02,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226202667] [2021-11-13 01:43:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:02,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:02,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:02,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226202667] [2021-11-13 01:43:02,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226202667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:02,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:02,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:43:02,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5662312] [2021-11-13 01:43:02,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:02,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:43:02,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:02,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:43:02,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:43:02,429 INFO L87 Difference]: Start difference. First operand 233 states and 275 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:03,136 INFO L93 Difference]: Finished difference Result 483 states and 593 transitions. [2021-11-13 01:43:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 01:43:03,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-13 01:43:03,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:03,137 INFO L225 Difference]: With dead ends: 483 [2021-11-13 01:43:03,137 INFO L226 Difference]: Without dead ends: 363 [2021-11-13 01:43:03,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:43:03,139 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 422 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 181.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 220.73ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:03,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 471 Invalid, 395 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [10 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 220.73ms Time] [2021-11-13 01:43:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-13 01:43:03,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 223. [2021-11-13 01:43:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 221 states have (on average 1.1900452488687783) internal successors, (263), 222 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 263 transitions. [2021-11-13 01:43:03,270 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 263 transitions. Word has length 87 [2021-11-13 01:43:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:03,270 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 263 transitions. [2021-11-13 01:43:03,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:03,271 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 263 transitions. [2021-11-13 01:43:03,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-13 01:43:03,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:03,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:03,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-13 01:43:03,272 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash 615115764, now seen corresponding path program 1 times [2021-11-13 01:43:03,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:03,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36013088] [2021-11-13 01:43:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:03,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:04,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:04,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36013088] [2021-11-13 01:43:04,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36013088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:04,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:04,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-13 01:43:04,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020406446] [2021-11-13 01:43:04,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:04,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-13 01:43:04,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-13 01:43:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-11-13 01:43:04,299 INFO L87 Difference]: Start difference. First operand 223 states and 263 transitions. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:06,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:06,535 INFO L93 Difference]: Finished difference Result 446 states and 546 transitions. [2021-11-13 01:43:06,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-13 01:43:06,535 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-13 01:43:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:06,536 INFO L225 Difference]: With dead ends: 446 [2021-11-13 01:43:06,536 INFO L226 Difference]: Without dead ends: 440 [2021-11-13 01:43:06,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=406, Invalid=2144, Unknown=0, NotChecked=0, Total=2550 [2021-11-13 01:43:06,537 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 750 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 703.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.98ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 820.88ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:06,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 2880 Invalid, 1518 Unknown, 0 Unchecked, 7.98ms Time], IncrementalHoareTripleChecker [35 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 820.88ms Time] [2021-11-13 01:43:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-13 01:43:06,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 242. [2021-11-13 01:43:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 241 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 286 transitions. [2021-11-13 01:43:06,679 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 286 transitions. Word has length 88 [2021-11-13 01:43:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:06,679 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 286 transitions. [2021-11-13 01:43:06,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 286 transitions. [2021-11-13 01:43:06,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 01:43:06,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:06,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:06,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-13 01:43:06,680 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:06,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:06,681 INFO L85 PathProgramCache]: Analyzing trace with hash 634138090, now seen corresponding path program 1 times [2021-11-13 01:43:06,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:06,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679122347] [2021-11-13 01:43:06,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:06,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:06,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:06,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679122347] [2021-11-13 01:43:06,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679122347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:06,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:06,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:43:06,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824660026] [2021-11-13 01:43:06,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:06,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:43:06,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:06,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:43:06,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:43:06,952 INFO L87 Difference]: Start difference. First operand 242 states and 286 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:08,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:08,322 INFO L93 Difference]: Finished difference Result 562 states and 696 transitions. [2021-11-13 01:43:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:43:08,323 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-13 01:43:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:08,324 INFO L225 Difference]: With dead ends: 562 [2021-11-13 01:43:08,324 INFO L226 Difference]: Without dead ends: 556 [2021-11-13 01:43:08,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:43:08,325 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 723 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 223.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 261.67ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:08,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 1529 Invalid, 367 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [12 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 261.67ms Time] [2021-11-13 01:43:08,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-11-13 01:43:08,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 217. [2021-11-13 01:43:08,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.1851851851851851) internal successors, (256), 216 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:08,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 256 transitions. [2021-11-13 01:43:08,517 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 256 transitions. Word has length 89 [2021-11-13 01:43:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:08,517 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 256 transitions. [2021-11-13 01:43:08,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 256 transitions. [2021-11-13 01:43:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 01:43:08,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:08,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:08,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-13 01:43:08,518 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:08,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:08,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1337256340, now seen corresponding path program 1 times [2021-11-13 01:43:08,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:08,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951092924] [2021-11-13 01:43:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:08,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:08,562 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:08,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951092924] [2021-11-13 01:43:08,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951092924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:08,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:08,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:43:08,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900760803] [2021-11-13 01:43:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:08,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:43:08,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:43:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:08,565 INFO L87 Difference]: Start difference. First operand 217 states and 256 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:08,826 INFO L93 Difference]: Finished difference Result 312 states and 381 transitions. [2021-11-13 01:43:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:08,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-11-13 01:43:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:08,827 INFO L225 Difference]: With dead ends: 312 [2021-11-13 01:43:08,827 INFO L226 Difference]: Without dead ends: 268 [2021-11-13 01:43:08,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:08,827 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 65 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.98ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:08,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 299 Invalid, 26 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 27.98ms Time] [2021-11-13 01:43:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-13 01:43:09,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 258. [2021-11-13 01:43:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.2023346303501945) internal successors, (309), 257 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 309 transitions. [2021-11-13 01:43:09,013 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 309 transitions. Word has length 107 [2021-11-13 01:43:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:09,013 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 309 transitions. [2021-11-13 01:43:09,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 309 transitions. [2021-11-13 01:43:09,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-13 01:43:09,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:09,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:09,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-13 01:43:09,015 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:09,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:09,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1745745532, now seen corresponding path program 1 times [2021-11-13 01:43:09,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:09,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915177306] [2021-11-13 01:43:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:09,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:09,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:09,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915177306] [2021-11-13 01:43:09,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915177306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:09,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:09,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:43:09,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862457544] [2021-11-13 01:43:09,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:09,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:43:09,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:09,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:43:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:09,069 INFO L87 Difference]: Start difference. First operand 258 states and 309 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:09,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:09,492 INFO L93 Difference]: Finished difference Result 506 states and 637 transitions. [2021-11-13 01:43:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:09,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-13 01:43:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:09,493 INFO L225 Difference]: With dead ends: 506 [2021-11-13 01:43:09,493 INFO L226 Difference]: Without dead ends: 382 [2021-11-13 01:43:09,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:09,494 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 58 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.64ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.79ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:09,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 300 Invalid, 26 Unknown, 0 Unchecked, 0.64ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 27.79ms Time] [2021-11-13 01:43:09,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-13 01:43:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 368. [2021-11-13 01:43:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.237057220708447) internal successors, (454), 367 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 454 transitions. [2021-11-13 01:43:09,827 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 454 transitions. Word has length 110 [2021-11-13 01:43:09,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:09,827 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 454 transitions. [2021-11-13 01:43:09,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:09,827 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 454 transitions. [2021-11-13 01:43:09,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 01:43:09,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:09,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:09,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-13 01:43:09,828 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:09,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:09,829 INFO L85 PathProgramCache]: Analyzing trace with hash 86933805, now seen corresponding path program 1 times [2021-11-13 01:43:09,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:09,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592158450] [2021-11-13 01:43:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:09,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:09,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:09,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592158450] [2021-11-13 01:43:09,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592158450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:09,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:09,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:43:09,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734726777] [2021-11-13 01:43:09,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:09,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:43:09,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:09,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:43:09,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:09,876 INFO L87 Difference]: Start difference. First operand 368 states and 454 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:10,915 INFO L93 Difference]: Finished difference Result 836 states and 1072 transitions. [2021-11-13 01:43:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:10,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-13 01:43:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:10,917 INFO L225 Difference]: With dead ends: 836 [2021-11-13 01:43:10,918 INFO L226 Difference]: Without dead ends: 602 [2021-11-13 01:43:10,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:10,919 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 51 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.05ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:10,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 301 Invalid, 26 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 31.05ms Time] [2021-11-13 01:43:10,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-13 01:43:11,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 576. [2021-11-13 01:43:11,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 1.2626086956521738) internal successors, (726), 575 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:11,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 726 transitions. [2021-11-13 01:43:11,563 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 726 transitions. Word has length 113 [2021-11-13 01:43:11,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:11,563 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 726 transitions. [2021-11-13 01:43:11,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:11,563 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 726 transitions. [2021-11-13 01:43:11,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 01:43:11,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:11,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:11,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-13 01:43:11,564 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:11,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:11,565 INFO L85 PathProgramCache]: Analyzing trace with hash -99208674, now seen corresponding path program 1 times [2021-11-13 01:43:11,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:11,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64708914] [2021-11-13 01:43:11,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:11,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:11,611 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:11,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64708914] [2021-11-13 01:43:11,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64708914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:11,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:11,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:43:11,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237986604] [2021-11-13 01:43:11,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:11,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:43:11,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:11,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:43:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:11,613 INFO L87 Difference]: Start difference. First operand 576 states and 726 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:13,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:13,090 INFO L93 Difference]: Finished difference Result 1460 states and 1888 transitions. [2021-11-13 01:43:13,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:13,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-13 01:43:13,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:13,092 INFO L225 Difference]: With dead ends: 1460 [2021-11-13 01:43:13,093 INFO L226 Difference]: Without dead ends: 1018 [2021-11-13 01:43:13,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:13,094 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 44 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.31ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:13,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 302 Invalid, 26 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 31.31ms Time] [2021-11-13 01:43:13,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-11-13 01:43:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 968. [2021-11-13 01:43:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 1.2761116856256463) internal successors, (1234), 967 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1234 transitions. [2021-11-13 01:43:14,236 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1234 transitions. Word has length 116 [2021-11-13 01:43:14,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:14,237 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1234 transitions. [2021-11-13 01:43:14,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:14,237 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1234 transitions. [2021-11-13 01:43:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-13 01:43:14,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:14,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:14,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-13 01:43:14,238 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:14,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 970496512, now seen corresponding path program 1 times [2021-11-13 01:43:14,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:14,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162762018] [2021-11-13 01:43:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:14,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:14,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:14,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162762018] [2021-11-13 01:43:14,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162762018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:14,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:14,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:43:14,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040253022] [2021-11-13 01:43:14,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:14,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:43:14,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:14,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:43:14,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:14,296 INFO L87 Difference]: Start difference. First operand 968 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:16,888 INFO L93 Difference]: Finished difference Result 2636 states and 3412 transitions. [2021-11-13 01:43:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-13 01:43:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:16,891 INFO L225 Difference]: With dead ends: 2636 [2021-11-13 01:43:16,891 INFO L226 Difference]: Without dead ends: 1802 [2021-11-13 01:43:16,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:16,893 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 34 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.53ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:16,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 303 Invalid, 27 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 31.53ms Time] [2021-11-13 01:43:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2021-11-13 01:43:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1704. [2021-11-13 01:43:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 1.2789195537287141) internal successors, (2178), 1703 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2178 transitions. [2021-11-13 01:43:19,172 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2178 transitions. Word has length 119 [2021-11-13 01:43:19,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:19,173 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 2178 transitions. [2021-11-13 01:43:19,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:19,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2178 transitions. [2021-11-13 01:43:19,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 01:43:19,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:19,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:19,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-13 01:43:19,174 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:19,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:19,174 INFO L85 PathProgramCache]: Analyzing trace with hash 488041427, now seen corresponding path program 1 times [2021-11-13 01:43:19,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:19,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610815512] [2021-11-13 01:43:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:19,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:19,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:19,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610815512] [2021-11-13 01:43:19,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610815512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:19,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:19,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:43:19,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322169116] [2021-11-13 01:43:19,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:19,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:43:19,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:19,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:43:19,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:43:19,250 INFO L87 Difference]: Start difference. First operand 1704 states and 2178 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:26,419 INFO L93 Difference]: Finished difference Result 6809 states and 8797 transitions. [2021-11-13 01:43:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:43:26,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-13 01:43:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:26,424 INFO L225 Difference]: With dead ends: 6809 [2021-11-13 01:43:26,424 INFO L226 Difference]: Without dead ends: 5239 [2021-11-13 01:43:26,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:43:26,427 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 840 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.73ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.01ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:26,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 1385 Invalid, 236 Unknown, 0 Unchecked, 3.73ms Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 136.01ms Time] [2021-11-13 01:43:26,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2021-11-13 01:43:29,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 2468. [2021-11-13 01:43:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.270368869071747) internal successors, (3134), 2467 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3134 transitions. [2021-11-13 01:43:29,803 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3134 transitions. Word has length 122 [2021-11-13 01:43:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:29,804 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 3134 transitions. [2021-11-13 01:43:29,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:29,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3134 transitions. [2021-11-13 01:43:29,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-13 01:43:29,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:29,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:29,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-13 01:43:29,806 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:29,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:29,807 INFO L85 PathProgramCache]: Analyzing trace with hash 601773992, now seen corresponding path program 1 times [2021-11-13 01:43:29,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:29,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892372411] [2021-11-13 01:43:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:29,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:29,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:29,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892372411] [2021-11-13 01:43:29,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892372411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:29,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:29,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:43:29,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837270453] [2021-11-13 01:43:29,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:29,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:43:29,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:29,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:43:29,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:29,862 INFO L87 Difference]: Start difference. First operand 2468 states and 3134 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:33,992 INFO L93 Difference]: Finished difference Result 5412 states and 6908 transitions. [2021-11-13 01:43:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:33,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2021-11-13 01:43:33,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:33,996 INFO L225 Difference]: With dead ends: 5412 [2021-11-13 01:43:33,996 INFO L226 Difference]: Without dead ends: 3078 [2021-11-13 01:43:33,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:33,999 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 79 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.77ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:34,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 237 Invalid, 27 Unknown, 0 Unchecked, 0.74ms Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 32.77ms Time] [2021-11-13 01:43:34,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-11-13 01:43:38,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3076. [2021-11-13 01:43:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3075 states have (on average 1.263089430894309) internal successors, (3884), 3075 states have internal predecessors, (3884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 3884 transitions. [2021-11-13 01:43:38,156 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 3884 transitions. Word has length 124 [2021-11-13 01:43:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:38,156 INFO L470 AbstractCegarLoop]: Abstraction has 3076 states and 3884 transitions. [2021-11-13 01:43:38,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 3884 transitions. [2021-11-13 01:43:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-13 01:43:38,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:38,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:38,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-13 01:43:38,157 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:38,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:38,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1582353173, now seen corresponding path program 1 times [2021-11-13 01:43:38,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:38,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864653466] [2021-11-13 01:43:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:38,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:38,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:38,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864653466] [2021-11-13 01:43:38,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864653466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:38,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:38,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:43:38,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987404296] [2021-11-13 01:43:38,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:38,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:43:38,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:38,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:43:38,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:43:38,306 INFO L87 Difference]: Start difference. First operand 3076 states and 3884 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:42,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:42,378 INFO L93 Difference]: Finished difference Result 6020 states and 7624 transitions. [2021-11-13 01:43:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:43:42,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2021-11-13 01:43:42,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:42,382 INFO L225 Difference]: With dead ends: 6020 [2021-11-13 01:43:42,382 INFO L226 Difference]: Without dead ends: 3078 [2021-11-13 01:43:42,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:43:42,386 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 488 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.33ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:42,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 372 Invalid, 89 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 59.33ms Time] [2021-11-13 01:43:42,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-11-13 01:43:46,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3076. [2021-11-13 01:43:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3075 states have (on average 1.262439024390244) internal successors, (3882), 3075 states have internal predecessors, (3882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 3882 transitions. [2021-11-13 01:43:46,421 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 3882 transitions. Word has length 124 [2021-11-13 01:43:46,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:46,421 INFO L470 AbstractCegarLoop]: Abstraction has 3076 states and 3882 transitions. [2021-11-13 01:43:46,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:46,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 3882 transitions. [2021-11-13 01:43:46,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-13 01:43:46,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:46,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:46,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-13 01:43:46,422 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:46,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:46,423 INFO L85 PathProgramCache]: Analyzing trace with hash -6458196, now seen corresponding path program 1 times [2021-11-13 01:43:46,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:46,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192406239] [2021-11-13 01:43:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:46,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:46,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:46,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192406239] [2021-11-13 01:43:46,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192406239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:46,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:46,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:43:46,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411847124] [2021-11-13 01:43:46,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:46,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:43:46,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:46,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:43:46,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:43:46,503 INFO L87 Difference]: Start difference. First operand 3076 states and 3882 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:52,283 INFO L93 Difference]: Finished difference Result 4243 states and 5298 transitions. [2021-11-13 01:43:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:43:52,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-13 01:43:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:52,286 INFO L225 Difference]: With dead ends: 4243 [2021-11-13 01:43:52,287 INFO L226 Difference]: Without dead ends: 4241 [2021-11-13 01:43:52,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:43:52,287 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 334 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.42ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:52,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 972 Invalid, 147 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 93.42ms Time] [2021-11-13 01:43:52,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2021-11-13 01:43:56,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 3076. [2021-11-13 01:43:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3075 states have (on average 1.246829268292683) internal successors, (3834), 3075 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 3834 transitions. [2021-11-13 01:43:56,257 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 3834 transitions. Word has length 125 [2021-11-13 01:43:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:56,257 INFO L470 AbstractCegarLoop]: Abstraction has 3076 states and 3834 transitions. [2021-11-13 01:43:56,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 3834 transitions. [2021-11-13 01:43:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-13 01:43:56,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:56,260 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:56,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-13 01:43:56,260 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:43:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:56,260 INFO L85 PathProgramCache]: Analyzing trace with hash 238346755, now seen corresponding path program 1 times [2021-11-13 01:43:56,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:56,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252700224] [2021-11-13 01:43:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:56,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 01:43:56,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:56,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252700224] [2021-11-13 01:43:56,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252700224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:56,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:56,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:43:56,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399439868] [2021-11-13 01:43:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:56,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:43:56,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:56,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:43:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:43:56,519 INFO L87 Difference]: Start difference. First operand 3076 states and 3834 transitions. Second operand has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:11,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:11,071 INFO L93 Difference]: Finished difference Result 12997 states and 16215 transitions. [2021-11-13 01:44:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 01:44:11,072 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 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 144 [2021-11-13 01:44:11,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:11,082 INFO L225 Difference]: With dead ends: 12997 [2021-11-13 01:44:11,082 INFO L226 Difference]: Without dead ends: 10038 [2021-11-13 01:44:11,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=649, Unknown=0, NotChecked=0, Total=870 [2021-11-13 01:44:11,086 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1834 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 381.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.70ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 492.85ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:11,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1834 Valid, 773 Invalid, 784 Unknown, 0 Unchecked, 4.70ms Time], IncrementalHoareTripleChecker [93 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 492.85ms Time] [2021-11-13 01:44:11,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10038 states. [2021-11-13 01:44:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10038 to 3086. [2021-11-13 01:44:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 3085 states have (on average 1.246029173419773) internal successors, (3844), 3085 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:15,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 3844 transitions. [2021-11-13 01:44:15,497 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 3844 transitions. Word has length 144 [2021-11-13 01:44:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:15,497 INFO L470 AbstractCegarLoop]: Abstraction has 3086 states and 3844 transitions. [2021-11-13 01:44:15,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 3844 transitions. [2021-11-13 01:44:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-13 01:44:15,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:15,499 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:44:15,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-13 01:44:15,499 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:44:15,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:15,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1931609592, now seen corresponding path program 1 times [2021-11-13 01:44:15,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:44:15,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278897299] [2021-11-13 01:44:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:15,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:44:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 01:44:15,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:44:15,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278897299] [2021-11-13 01:44:15,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278897299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:15,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:15,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:44:15,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039551620] [2021-11-13 01:44:15,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:15,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:44:15,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:44:15,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:44:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:44:15,615 INFO L87 Difference]: Start difference. First operand 3086 states and 3844 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:22,564 INFO L93 Difference]: Finished difference Result 7737 states and 9662 transitions. [2021-11-13 01:44:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 01:44:22,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-13 01:44:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:22,569 INFO L225 Difference]: With dead ends: 7737 [2021-11-13 01:44:22,569 INFO L226 Difference]: Without dead ends: 4778 [2021-11-13 01:44:22,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:44:22,572 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 526 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 148.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 200.52ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:22,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 425 Invalid, 375 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [14 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 200.52ms Time] [2021-11-13 01:44:22,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4778 states. [2021-11-13 01:44:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4778 to 3076. [2021-11-13 01:44:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3075 states have (on average 1.2461788617886178) internal successors, (3832), 3075 states have internal predecessors, (3832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 3832 transitions. [2021-11-13 01:44:26,665 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 3832 transitions. Word has length 145 [2021-11-13 01:44:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:26,666 INFO L470 AbstractCegarLoop]: Abstraction has 3076 states and 3832 transitions. [2021-11-13 01:44:26,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 3832 transitions. [2021-11-13 01:44:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-13 01:44:26,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:26,668 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:44:26,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-13 01:44:26,668 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:44:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:26,668 INFO L85 PathProgramCache]: Analyzing trace with hash -85742584, now seen corresponding path program 1 times [2021-11-13 01:44:26,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:44:26,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921406933] [2021-11-13 01:44:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:26,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:44:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:27,443 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 01:44:27,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:44:27,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921406933] [2021-11-13 01:44:27,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921406933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:27,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:27,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-13 01:44:27,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365031] [2021-11-13 01:44:27,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:27,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-13 01:44:27,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:44:27,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-13 01:44:27,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2021-11-13 01:44:27,444 INFO L87 Difference]: Start difference. First operand 3076 states and 3832 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:37,627 INFO L93 Difference]: Finished difference Result 9011 states and 11264 transitions. [2021-11-13 01:44:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-13 01:44:37,628 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 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 146 [2021-11-13 01:44:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:37,634 INFO L225 Difference]: With dead ends: 9011 [2021-11-13 01:44:37,634 INFO L226 Difference]: Without dead ends: 6058 [2021-11-13 01:44:37,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=359, Invalid=1897, Unknown=0, NotChecked=0, Total=2256 [2021-11-13 01:44:37,638 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 525 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 674.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.23ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 797.21ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:37,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 2823 Invalid, 1468 Unknown, 0 Unchecked, 7.23ms Time], IncrementalHoareTripleChecker [34 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 797.21ms Time] [2021-11-13 01:44:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6058 states. [2021-11-13 01:44:42,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6058 to 3094. [2021-11-13 01:44:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 3093 states have (on average 1.245392822502425) internal successors, (3852), 3093 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 3852 transitions. [2021-11-13 01:44:42,490 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 3852 transitions. Word has length 146 [2021-11-13 01:44:42,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:42,490 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 3852 transitions. [2021-11-13 01:44:42,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 3852 transitions. [2021-11-13 01:44:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-13 01:44:42,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:42,492 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:44:42,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-13 01:44:42,492 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-13 01:44:42,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash 624258686, now seen corresponding path program 1 times [2021-11-13 01:44:42,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:44:42,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598374862] [2021-11-13 01:44:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:42,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:44:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:48,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:44:48,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598374862] [2021-11-13 01:44:48,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598374862] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 01:44:48,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103571007] [2021-11-13 01:44:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:48,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:44:48,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:44:48,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:44:48,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6624c472-4804-40a8-a522-76754ccdd92a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 01:44:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:49,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-13 01:44:49,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:45:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:22,573 INFO L328 TraceCheckSpWp]: Computing backward predicates...