./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/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 72fb41a66cb1f9b8ef6e2c9a867b06ff465ce26afd613e6d36809476f178395e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:27:29,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:27:29,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:27:29,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:27:29,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:27:29,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:27:29,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:27:29,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:27:29,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:27:29,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:27:29,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:27:29,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:27:29,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:27:29,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:27:29,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:27:29,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:27:29,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:27:29,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:27:29,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:27:29,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:27:29,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:27:29,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:27:29,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:27:29,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:27:29,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:27:29,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:27:29,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:27:29,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:27:29,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:27:29,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:27:29,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:27:29,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:27:29,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:27:29,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:27:29,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:27:29,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:27:29,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:27:29,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:27:29,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:27:29,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:27:29,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:27:29,785 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:27:29,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:27:29,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:27:29,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:27:29,817 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:27:29,818 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:27:29,818 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:27:29,818 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:27:29,818 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:27:29,819 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:27:29,819 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:27:29,819 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:27:29,819 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:27:29,820 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:27:29,820 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:27:29,820 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:27:29,820 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:27:29,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:27:29,821 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:27:29,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:27:29,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:27:29,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:27:29,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:27:29,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:27:29,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:27:29,823 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:27:29,823 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:27:29,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:27:29,824 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:27:29,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:27:29,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:27:29,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:27:29,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:29,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:27:29,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:27:29,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:27:29,826 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:27:29,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:27:29,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:27:29,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:27:29,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:27:29,827 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72fb41a66cb1f9b8ef6e2c9a867b06ff465ce26afd613e6d36809476f178395e [2021-11-13 01:27:30,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:27:30,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:27:30,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:27:30,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:27:30,194 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:27:30,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-13 01:27:30,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/data/cd79aeefb/3b7cb73a742f46b490b71050ffc35373/FLAGddc30adfa [2021-11-13 01:27:31,314 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:27:31,315 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-13 01:27:31,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/data/cd79aeefb/3b7cb73a742f46b490b71050ffc35373/FLAGddc30adfa [2021-11-13 01:27:31,732 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/data/cd79aeefb/3b7cb73a742f46b490b71050ffc35373 [2021-11-13 01:27:31,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:27:31,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:27:31,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:31,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:27:31,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:27:31,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:31" (1/1) ... [2021-11-13 01:27:31,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d8bfa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:31, skipping insertion in model container [2021-11-13 01:27:31,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:31" (1/1) ... [2021-11-13 01:27:31,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:27:31,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:32,550 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13533,13546] [2021-11-13 01:27:32,589 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18033,18046] [2021-11-13 01:27:32,604 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19325,19338] [2021-11-13 01:27:32,614 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20083,20096] [2021-11-13 01:27:32,631 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21703,21716] [2021-11-13 01:27:32,641 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22461,22474] [2021-11-13 01:27:32,653 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23547,23560] [2021-11-13 01:27:32,679 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26086,26099] [2021-11-13 01:27:32,688 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26847,26860] [2021-11-13 01:27:32,700 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27936,27949] [2021-11-13 01:27:32,722 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29941,29954] [2021-11-13 01:27:32,757 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33864,33877] [2021-11-13 01:27:32,765 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34625,34638] [2021-11-13 01:27:32,774 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35718,35731] [2021-11-13 01:27:32,789 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37727,37740] [2021-11-13 01:27:32,816 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41330,41343] [2021-11-13 01:27:32,861 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48207,48220] [2021-11-13 01:27:32,871 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48968,48981] [2021-11-13 01:27:32,882 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50057,50070] [2021-11-13 01:27:32,909 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52062,52075] [2021-11-13 01:27:32,939 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55451,55464] [2021-11-13 01:27:33,004 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61148,61161] [2021-11-13 01:27:33,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:33,599 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:27:33,765 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13533,13546] [2021-11-13 01:27:33,824 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18033,18046] [2021-11-13 01:27:33,850 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19325,19338] [2021-11-13 01:27:33,857 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20083,20096] [2021-11-13 01:27:33,866 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21703,21716] [2021-11-13 01:27:33,873 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22461,22474] [2021-11-13 01:27:33,880 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23547,23560] [2021-11-13 01:27:33,897 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26086,26099] [2021-11-13 01:27:33,903 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26847,26860] [2021-11-13 01:27:33,910 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27936,27949] [2021-11-13 01:27:33,922 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29941,29954] [2021-11-13 01:27:33,942 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33864,33877] [2021-11-13 01:27:33,955 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34625,34638] [2021-11-13 01:27:33,962 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35718,35731] [2021-11-13 01:27:33,975 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37727,37740] [2021-11-13 01:27:33,996 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41330,41343] [2021-11-13 01:27:34,031 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48207,48220] [2021-11-13 01:27:34,037 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48968,48981] [2021-11-13 01:27:34,044 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50057,50070] [2021-11-13 01:27:34,056 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52062,52075] [2021-11-13 01:27:34,075 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55451,55464] [2021-11-13 01:27:34,102 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_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61148,61161] [2021-11-13 01:27:34,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:34,468 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:27:34,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34 WrapperNode [2021-11-13 01:27:34,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:34,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:27:34,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:27:34,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:27:34,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34" (1/1) ... [2021-11-13 01:27:34,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34" (1/1) ... [2021-11-13 01:27:34,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:27:34,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:27:34,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:27:34,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:27:34,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34" (1/1) ... [2021-11-13 01:27:34,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34" (1/1) ... [2021-11-13 01:27:34,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34" (1/1) ... [2021-11-13 01:27:34,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34" (1/1) ... [2021-11-13 01:27:34,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34" (1/1) ... [2021-11-13 01:27:34,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34" (1/1) ... [2021-11-13 01:27:34,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34" (1/1) ... [2021-11-13 01:27:34,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:27:34,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:27:34,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:27:34,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:27:34,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34" (1/1) ... [2021-11-13 01:27:34,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:34,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:27:34,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:27:35,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:27:35,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:27:35,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 01:27:35,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:27:35,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:27:39,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:27:39,461 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:27:39,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:39 BoogieIcfgContainer [2021-11-13 01:27:39,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:27:39,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:27:39,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:27:39,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:27:39,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:27:31" (1/3) ... [2021-11-13 01:27:39,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2781dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:39, skipping insertion in model container [2021-11-13 01:27:39,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:34" (2/3) ... [2021-11-13 01:27:39,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2781dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:39, skipping insertion in model container [2021-11-13 01:27:39,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:39" (3/3) ... [2021-11-13 01:27:39,477 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-13 01:27:39,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:27:39,483 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-11-13 01:27:39,548 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:27:39,557 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 01:27:39,557 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-11-13 01:27:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 1087 states, 1064 states have (on average 1.8646616541353382) internal successors, (1984), 1086 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 01:27:39,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:39,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:39,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:39,649 INFO L85 PathProgramCache]: Analyzing trace with hash -744865271, now seen corresponding path program 1 times [2021-11-13 01:27:39,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:39,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87266056] [2021-11-13 01:27:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:39,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:40,268 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 01:27:40,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:40,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87266056] [2021-11-13 01:27:40,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87266056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:40,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:40,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:27:40,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567769369] [2021-11-13 01:27:40,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:40,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:27:40,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:27:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:27:40,324 INFO L87 Difference]: Start difference. First operand has 1087 states, 1064 states have (on average 1.8646616541353382) internal successors, (1984), 1086 states have internal predecessors, (1984), 0 states have call successors, (0), 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 16.8) internal successors, (84), 4 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 01:27:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:41,354 INFO L93 Difference]: Finished difference Result 1627 states and 2869 transitions. [2021-11-13 01:27:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:27:41,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 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 01:27:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:41,390 INFO L225 Difference]: With dead ends: 1627 [2021-11-13 01:27:41,390 INFO L226 Difference]: Without dead ends: 841 [2021-11-13 01:27:41,401 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 01:27:41,412 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 4301 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 613.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.54ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 805.84ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:41,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 1013 Invalid, 524 Unknown, 0 Unchecked, 32.54ms Time], IncrementalHoareTripleChecker [19 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 805.84ms Time] [2021-11-13 01:27:41,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-11-13 01:27:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 841. [2021-11-13 01:27:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 819 states have (on average 1.2991452991452992) internal successors, (1064), 840 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:41,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1064 transitions. [2021-11-13 01:27:41,530 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1064 transitions. Word has length 84 [2021-11-13 01:27:41,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:41,531 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1064 transitions. [2021-11-13 01:27:41,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 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 01:27:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1064 transitions. [2021-11-13 01:27:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-13 01:27:41,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:41,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:27:41,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 01:27:41,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:41,541 INFO L85 PathProgramCache]: Analyzing trace with hash 861830130, now seen corresponding path program 1 times [2021-11-13 01:27:41,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:41,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875812994] [2021-11-13 01:27:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:41,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:41,787 INFO 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 01:27:41,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:41,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875812994] [2021-11-13 01:27:41,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875812994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:41,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:41,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:27:41,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410987308] [2021-11-13 01:27:41,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:41,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:27:41,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:41,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:27:41,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:27:41,795 INFO L87 Difference]: Start difference. First operand 841 states and 1064 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:42,659 INFO L93 Difference]: Finished difference Result 1375 states and 1790 transitions. [2021-11-13 01:27:42,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:27:42,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-13 01:27:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:42,665 INFO L225 Difference]: With dead ends: 1375 [2021-11-13 01:27:42,665 INFO L226 Difference]: Without dead ends: 761 [2021-11-13 01:27:42,667 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 01:27:42,668 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 2702 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 631.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.83ms SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 761.44ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:42,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2702 Valid, 488 Invalid, 640 Unknown, 0 Unchecked, 15.83ms Time], IncrementalHoareTripleChecker [115 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 761.44ms Time] [2021-11-13 01:27:42,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-11-13 01:27:42,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2021-11-13 01:27:42,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 739 states have (on average 1.3085250338294994) internal successors, (967), 760 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 967 transitions. [2021-11-13 01:27:42,720 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 967 transitions. Word has length 85 [2021-11-13 01:27:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:42,723 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 967 transitions. [2021-11-13 01:27:42,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:42,725 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 967 transitions. [2021-11-13 01:27:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-13 01:27:42,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:42,734 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, 1, 1, 1] [2021-11-13 01:27:42,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 01:27:42,735 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:42,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash 212889132, now seen corresponding path program 1 times [2021-11-13 01:27:42,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:42,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450144858] [2021-11-13 01:27:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:42,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:42,970 INFO 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 01:27:42,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:42,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450144858] [2021-11-13 01:27:42,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450144858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:42,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:42,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:27:42,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859390855] [2021-11-13 01:27:42,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:42,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:27:42,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:42,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:27:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:27:42,975 INFO L87 Difference]: Start difference. First operand 761 states and 967 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:43,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:43,661 INFO L93 Difference]: Finished difference Result 1295 states and 1692 transitions. [2021-11-13 01:27:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:27:43,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-13 01:27:43,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:43,667 INFO L225 Difference]: With dead ends: 1295 [2021-11-13 01:27:43,667 INFO L226 Difference]: Without dead ends: 685 [2021-11-13 01:27:43,669 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 01:27:43,670 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 2539 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 478.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.77ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 588.30ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:43,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2539 Valid, 494 Invalid, 449 Unknown, 0 Unchecked, 13.77ms Time], IncrementalHoareTripleChecker [31 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 588.30ms Time] [2021-11-13 01:27:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2021-11-13 01:27:43,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2021-11-13 01:27:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 663 states have (on average 1.330316742081448) internal successors, (882), 684 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 882 transitions. [2021-11-13 01:27:43,710 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 882 transitions. Word has length 86 [2021-11-13 01:27:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:43,711 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 882 transitions. [2021-11-13 01:27:43,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 882 transitions. [2021-11-13 01:27:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 01:27:43,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:43,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:43,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 01:27:43,714 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash 595317579, now seen corresponding path program 1 times [2021-11-13 01:27:43,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:43,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964873137] [2021-11-13 01:27:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:43,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:43,833 INFO 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 01:27:43,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:43,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964873137] [2021-11-13 01:27:43,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964873137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:43,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:43,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:27:43,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145815789] [2021-11-13 01:27:43,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:43,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:27:43,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:43,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:27:43,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:27:43,839 INFO L87 Difference]: Start difference. First operand 685 states and 882 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:44,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:44,415 INFO L93 Difference]: Finished difference Result 1219 states and 1606 transitions. [2021-11-13 01:27:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:27:44,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-13 01:27:44,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:44,421 INFO L225 Difference]: With dead ends: 1219 [2021-11-13 01:27:44,421 INFO L226 Difference]: Without dead ends: 635 [2021-11-13 01:27:44,422 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 01:27:44,423 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 2413 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 404.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.92ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 487.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:44,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2413 Valid, 466 Invalid, 386 Unknown, 0 Unchecked, 10.92ms Time], IncrementalHoareTripleChecker [11 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 487.83ms Time] [2021-11-13 01:27:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-11-13 01:27:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2021-11-13 01:27:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 613 states have (on average 1.3491027732463294) internal successors, (827), 634 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 827 transitions. [2021-11-13 01:27:44,474 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 827 transitions. Word has length 87 [2021-11-13 01:27:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:44,475 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 827 transitions. [2021-11-13 01:27:44,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:44,480 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 827 transitions. [2021-11-13 01:27:44,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-13 01:27:44,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:44,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:44,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 01:27:44,492 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:44,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:44,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1127238977, now seen corresponding path program 1 times [2021-11-13 01:27:44,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:44,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303596477] [2021-11-13 01:27:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:44,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:44,673 INFO 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 01:27:44,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:44,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303596477] [2021-11-13 01:27:44,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303596477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:44,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:44,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:27:44,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719119235] [2021-11-13 01:27:44,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:44,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:27:44,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:44,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:27:44,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:27:44,677 INFO L87 Difference]: Start difference. First operand 635 states and 827 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:45,525 INFO L93 Difference]: Finished difference Result 1488 states and 1970 transitions. [2021-11-13 01:27:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:27:45,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-13 01:27:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:45,532 INFO L225 Difference]: With dead ends: 1488 [2021-11-13 01:27:45,532 INFO L226 Difference]: Without dead ends: 926 [2021-11-13 01:27:45,533 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 01:27:45,535 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 3088 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 573.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3088 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.28ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 724.58ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:45,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3088 Valid, 693 Invalid, 580 Unknown, 0 Unchecked, 11.28ms Time], IncrementalHoareTripleChecker [8 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 724.58ms Time] [2021-11-13 01:27:45,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-11-13 01:27:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 846. [2021-11-13 01:27:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 824 states have (on average 1.3944174757281553) internal successors, (1149), 845 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1149 transitions. [2021-11-13 01:27:45,603 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1149 transitions. Word has length 88 [2021-11-13 01:27:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:45,603 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 1149 transitions. [2021-11-13 01:27:45,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1149 transitions. [2021-11-13 01:27:45,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 01:27:45,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:45,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:45,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 01:27:45,608 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:45,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:45,608 INFO L85 PathProgramCache]: Analyzing trace with hash -81085098, now seen corresponding path program 1 times [2021-11-13 01:27:45,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:45,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417792950] [2021-11-13 01:27:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:45,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:45,698 INFO 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 01:27:45,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:45,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417792950] [2021-11-13 01:27:45,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417792950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:45,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:45,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:27:45,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649020742] [2021-11-13 01:27:45,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:45,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:27:45,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:45,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:27:45,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:27:45,702 INFO L87 Difference]: Start difference. First operand 846 states and 1149 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:46,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:46,401 INFO L93 Difference]: Finished difference Result 1619 states and 2224 transitions. [2021-11-13 01:27:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:27:46,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-13 01:27:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:46,409 INFO L225 Difference]: With dead ends: 1619 [2021-11-13 01:27:46,409 INFO L226 Difference]: Without dead ends: 838 [2021-11-13 01:27:46,411 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 01:27:46,414 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 2217 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 473.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.77ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 579.29ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:46,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2217 Valid, 426 Invalid, 451 Unknown, 0 Unchecked, 6.77ms Time], IncrementalHoareTripleChecker [52 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 579.29ms Time] [2021-11-13 01:27:46,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-11-13 01:27:46,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2021-11-13 01:27:46,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3946078431372548) internal successors, (1138), 837 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1138 transitions. [2021-11-13 01:27:46,486 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1138 transitions. Word has length 89 [2021-11-13 01:27:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:46,488 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1138 transitions. [2021-11-13 01:27:46,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1138 transitions. [2021-11-13 01:27:46,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 01:27:46,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:46,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:46,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 01:27:46,492 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:46,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1177000506, now seen corresponding path program 1 times [2021-11-13 01:27:46,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:46,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018700824] [2021-11-13 01:27:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:46,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:46,709 INFO 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 01:27:46,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:46,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018700824] [2021-11-13 01:27:46,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018700824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:46,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:46,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 01:27:46,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068427819] [2021-11-13 01:27:46,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:46,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:27:46,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:27:46,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:27:46,714 INFO L87 Difference]: Start difference. First operand 838 states and 1138 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:47,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:47,925 INFO L93 Difference]: Finished difference Result 1466 states and 1908 transitions. [2021-11-13 01:27:47,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:27:47,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-13 01:27:47,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:47,933 INFO L225 Difference]: With dead ends: 1466 [2021-11-13 01:27:47,933 INFO L226 Difference]: Without dead ends: 1103 [2021-11-13 01:27:47,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:27:47,936 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 3339 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 756.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3339 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.49ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 927.56ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:47,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3339 Valid, 933 Invalid, 1115 Unknown, 0 Unchecked, 11.49ms Time], IncrementalHoareTripleChecker [105 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 927.56ms Time] [2021-11-13 01:27:47,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2021-11-13 01:27:48,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 838. [2021-11-13 01:27:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3933823529411764) internal successors, (1137), 837 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1137 transitions. [2021-11-13 01:27:48,027 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1137 transitions. Word has length 90 [2021-11-13 01:27:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:48,028 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1137 transitions. [2021-11-13 01:27:48,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1137 transitions. [2021-11-13 01:27:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 01:27:48,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:48,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:48,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 01:27:48,035 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:48,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1435926047, now seen corresponding path program 1 times [2021-11-13 01:27:48,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:48,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788912788] [2021-11-13 01:27:48,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:48,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:48,289 INFO 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 01:27:48,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:48,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788912788] [2021-11-13 01:27:48,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788912788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:48,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:48,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:27:48,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468898484] [2021-11-13 01:27:48,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:48,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:27:48,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:48,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:27:48,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:27:48,293 INFO L87 Difference]: Start difference. First operand 838 states and 1137 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:50,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:50,015 INFO L93 Difference]: Finished difference Result 1144 states and 1547 transitions. [2021-11-13 01:27:50,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:27:50,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-13 01:27:50,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:50,023 INFO L225 Difference]: With dead ends: 1144 [2021-11-13 01:27:50,023 INFO L226 Difference]: Without dead ends: 938 [2021-11-13 01:27:50,024 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 01:27:50,025 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1676 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1181.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.05ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1432.14ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:50,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1676 Valid, 2559 Invalid, 1928 Unknown, 0 Unchecked, 15.05ms Time], IncrementalHoareTripleChecker [14 Valid, 1914 Invalid, 0 Unknown, 0 Unchecked, 1432.14ms Time] [2021-11-13 01:27:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-11-13 01:27:50,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 838. [2021-11-13 01:27:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.392156862745098) internal successors, (1136), 837 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1136 transitions. [2021-11-13 01:27:50,111 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1136 transitions. Word has length 90 [2021-11-13 01:27:50,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:50,112 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1136 transitions. [2021-11-13 01:27:50,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:50,112 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1136 transitions. [2021-11-13 01:27:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 01:27:50,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:50,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:27:50,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 01:27:50,116 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1452291629, now seen corresponding path program 1 times [2021-11-13 01:27:50,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:50,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956948901] [2021-11-13 01:27:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:50,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:50,344 INFO 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 01:27:50,344 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:50,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956948901] [2021-11-13 01:27:50,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956948901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:50,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:50,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:27:50,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461784178] [2021-11-13 01:27:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:50,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:27:50,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:50,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:27:50,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:27:50,349 INFO L87 Difference]: Start difference. First operand 838 states and 1136 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:52,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:52,294 INFO L93 Difference]: Finished difference Result 1634 states and 2213 transitions. [2021-11-13 01:27:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:27:52,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-13 01:27:52,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:52,306 INFO L225 Difference]: With dead ends: 1634 [2021-11-13 01:27:52,306 INFO L226 Difference]: Without dead ends: 1493 [2021-11-13 01:27:52,307 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 01:27:52,308 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 2626 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1276.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2626 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.78ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1610.98ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:52,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2626 Valid, 2930 Invalid, 2418 Unknown, 0 Unchecked, 16.78ms Time], IncrementalHoareTripleChecker [24 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 1610.98ms Time] [2021-11-13 01:27:52,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2021-11-13 01:27:52,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 838. [2021-11-13 01:27:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3909313725490196) internal successors, (1135), 837 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1135 transitions. [2021-11-13 01:27:52,406 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1135 transitions. Word has length 90 [2021-11-13 01:27:52,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:52,407 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1135 transitions. [2021-11-13 01:27:52,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:52,407 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1135 transitions. [2021-11-13 01:27:52,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 01:27:52,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:52,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:52,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 01:27:52,411 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:52,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:52,412 INFO L85 PathProgramCache]: Analyzing trace with hash 280311879, now seen corresponding path program 1 times [2021-11-13 01:27:52,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:52,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096556057] [2021-11-13 01:27:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:52,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:52,575 INFO 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 01:27:52,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:52,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096556057] [2021-11-13 01:27:52,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096556057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:52,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:52,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:27:52,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760142083] [2021-11-13 01:27:52,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:52,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:27:52,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:52,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:27:52,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:27:52,579 INFO L87 Difference]: Start difference. First operand 838 states and 1135 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:54,001 INFO L93 Difference]: Finished difference Result 1284 states and 1736 transitions. [2021-11-13 01:27:54,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 01:27:54,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-13 01:27:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:54,013 INFO L225 Difference]: With dead ends: 1284 [2021-11-13 01:27:54,013 INFO L226 Difference]: Without dead ends: 938 [2021-11-13 01:27:54,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:27:54,017 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 1699 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 949.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.35ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1142.93ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:54,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 1841 Invalid, 1658 Unknown, 0 Unchecked, 13.35ms Time], IncrementalHoareTripleChecker [15 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 1142.93ms Time] [2021-11-13 01:27:54,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-11-13 01:27:54,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 838. [2021-11-13 01:27:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3884803921568627) internal successors, (1133), 837 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1133 transitions. [2021-11-13 01:27:54,116 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1133 transitions. Word has length 92 [2021-11-13 01:27:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:54,116 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1133 transitions. [2021-11-13 01:27:54,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:54,118 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1133 transitions. [2021-11-13 01:27:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 01:27:54,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:54,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:27:54,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 01:27:54,122 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:54,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:54,122 INFO L85 PathProgramCache]: Analyzing trace with hash 347470600, now seen corresponding path program 1 times [2021-11-13 01:27:54,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:54,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138777675] [2021-11-13 01:27:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:54,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:54,351 INFO 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 01:27:54,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:54,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138777675] [2021-11-13 01:27:54,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138777675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:54,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:54,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:27:54,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454725605] [2021-11-13 01:27:54,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:54,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:27:54,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:54,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:27:54,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:27:54,355 INFO L87 Difference]: Start difference. First operand 838 states and 1133 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:56,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:56,218 INFO L93 Difference]: Finished difference Result 1605 states and 2162 transitions. [2021-11-13 01:27:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:27:56,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-13 01:27:56,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:56,233 INFO L225 Difference]: With dead ends: 1605 [2021-11-13 01:27:56,233 INFO L226 Difference]: Without dead ends: 1469 [2021-11-13 01:27:56,235 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 01:27:56,235 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 2524 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1214.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.27ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1515.13ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:56,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2524 Valid, 2691 Invalid, 2320 Unknown, 0 Unchecked, 13.27ms Time], IncrementalHoareTripleChecker [38 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 1515.13ms Time] [2021-11-13 01:27:56,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-13 01:27:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 838. [2021-11-13 01:27:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3860294117647058) internal successors, (1131), 837 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:56,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1131 transitions. [2021-11-13 01:27:56,341 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1131 transitions. Word has length 92 [2021-11-13 01:27:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:56,342 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1131 transitions. [2021-11-13 01:27:56,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1131 transitions. [2021-11-13 01:27:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 01:27:56,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:56,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:56,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 01:27:56,346 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:56,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:56,347 INFO L85 PathProgramCache]: Analyzing trace with hash -950419438, now seen corresponding path program 1 times [2021-11-13 01:27:56,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:56,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346394724] [2021-11-13 01:27:56,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:56,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:56,518 INFO 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 01:27:56,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:56,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346394724] [2021-11-13 01:27:56,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346394724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:56,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:56,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:27:56,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961186398] [2021-11-13 01:27:56,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:56,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:27:56,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:27:56,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:27:56,521 INFO L87 Difference]: Start difference. First operand 838 states and 1131 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:58,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:58,458 INFO L93 Difference]: Finished difference Result 1683 states and 2272 transitions. [2021-11-13 01:27:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:27:58,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-13 01:27:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:58,469 INFO L225 Difference]: With dead ends: 1683 [2021-11-13 01:27:58,470 INFO L226 Difference]: Without dead ends: 1493 [2021-11-13 01:27:58,471 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 01:27:58,472 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 2600 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 2643 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1260.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.90ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1601.71ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:58,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2600 Valid, 3508 Invalid, 2666 Unknown, 0 Unchecked, 11.90ms Time], IncrementalHoareTripleChecker [23 Valid, 2643 Invalid, 0 Unknown, 0 Unchecked, 1601.71ms Time] [2021-11-13 01:27:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2021-11-13 01:27:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 838. [2021-11-13 01:27:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.383578431372549) internal successors, (1129), 837 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 01:27:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1129 transitions. [2021-11-13 01:27:58,578 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1129 transitions. Word has length 92 [2021-11-13 01:27:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:58,578 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1129 transitions. [2021-11-13 01:27:58,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:27:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1129 transitions. [2021-11-13 01:27:58,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 01:27:58,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:58,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:58,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 01:27:58,583 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:27:58,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:58,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1340210149, now seen corresponding path program 1 times [2021-11-13 01:27:58,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:27:58,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602730369] [2021-11-13 01:27:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:58,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:27:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:58,757 INFO 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 01:27:58,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:27:58,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602730369] [2021-11-13 01:27:58,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602730369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:27:58,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:27:58,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:27:58,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504381783] [2021-11-13 01:27:58,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:58,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:27:58,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:27:58,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:27:58,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:27:58,761 INFO L87 Difference]: Start difference. First operand 838 states and 1129 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:00,421 INFO L93 Difference]: Finished difference Result 1586 states and 2131 transitions. [2021-11-13 01:28:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:00,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-13 01:28:00,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:00,432 INFO L225 Difference]: With dead ends: 1586 [2021-11-13 01:28:00,433 INFO L226 Difference]: Without dead ends: 1469 [2021-11-13 01:28:00,434 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 01:28:00,435 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 2509 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1078.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 2429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.96ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1358.59ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:00,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2509 Valid, 2907 Invalid, 2429 Unknown, 0 Unchecked, 9.96ms Time], IncrementalHoareTripleChecker [38 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1358.59ms Time] [2021-11-13 01:28:00,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-13 01:28:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 838. [2021-11-13 01:28:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3823529411764706) internal successors, (1128), 837 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1128 transitions. [2021-11-13 01:28:00,550 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1128 transitions. Word has length 92 [2021-11-13 01:28:00,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:00,551 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1128 transitions. [2021-11-13 01:28:00,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1128 transitions. [2021-11-13 01:28:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 01:28:00,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:00,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:28:00,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 01:28:00,555 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:00,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2065712337, now seen corresponding path program 1 times [2021-11-13 01:28:00,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:00,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141044896] [2021-11-13 01:28:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:00,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:00,818 INFO 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 01:28:00,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:00,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141044896] [2021-11-13 01:28:00,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141044896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:00,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:00,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:28:00,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687609881] [2021-11-13 01:28:00,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:00,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:28:00,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:00,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:28:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:28:00,822 INFO L87 Difference]: Start difference. First operand 838 states and 1128 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:03,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:03,995 INFO L93 Difference]: Finished difference Result 2195 states and 2948 transitions. [2021-11-13 01:28:03,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:28:03,996 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-13 01:28:03,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:04,007 INFO L225 Difference]: With dead ends: 2195 [2021-11-13 01:28:04,008 INFO L226 Difference]: Without dead ends: 2039 [2021-11-13 01:28:04,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:28:04,010 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 4799 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 2996 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1774.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4799 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 3461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.66ms SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 2996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2187.75ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:04,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4799 Valid, 3207 Invalid, 3461 Unknown, 0 Unchecked, 18.66ms Time], IncrementalHoareTripleChecker [465 Valid, 2996 Invalid, 0 Unknown, 0 Unchecked, 2187.75ms Time] [2021-11-13 01:28:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2021-11-13 01:28:04,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 842. [2021-11-13 01:28:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3804878048780487) internal successors, (1132), 841 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:04,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1132 transitions. [2021-11-13 01:28:04,148 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1132 transitions. Word has length 92 [2021-11-13 01:28:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:04,149 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1132 transitions. [2021-11-13 01:28:04,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:04,149 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1132 transitions. [2021-11-13 01:28:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 01:28:04,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:04,157 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] [2021-11-13 01:28:04,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 01:28:04,158 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:04,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:04,158 INFO L85 PathProgramCache]: Analyzing trace with hash -98755353, now seen corresponding path program 1 times [2021-11-13 01:28:04,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:04,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940881894] [2021-11-13 01:28:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:04,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:04,366 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 01:28:04,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:04,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940881894] [2021-11-13 01:28:04,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940881894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:04,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:04,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:04,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15843797] [2021-11-13 01:28:04,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:04,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:04,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:04,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:04,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:04,369 INFO L87 Difference]: Start difference. First operand 842 states and 1132 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:06,199 INFO L93 Difference]: Finished difference Result 1584 states and 2128 transitions. [2021-11-13 01:28:06,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:06,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-13 01:28:06,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:06,216 INFO L225 Difference]: With dead ends: 1584 [2021-11-13 01:28:06,216 INFO L226 Difference]: Without dead ends: 1473 [2021-11-13 01:28:06,217 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 01:28:06,218 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 2529 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1148.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.44ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1436.30ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:06,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2529 Valid, 2889 Invalid, 2421 Unknown, 0 Unchecked, 14.44ms Time], IncrementalHoareTripleChecker [38 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 1436.30ms Time] [2021-11-13 01:28:06,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2021-11-13 01:28:06,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 842. [2021-11-13 01:28:06,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3792682926829267) internal successors, (1131), 841 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1131 transitions. [2021-11-13 01:28:06,359 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1131 transitions. Word has length 92 [2021-11-13 01:28:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:06,359 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1131 transitions. [2021-11-13 01:28:06,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1131 transitions. [2021-11-13 01:28:06,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 01:28:06,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:06,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:28:06,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 01:28:06,363 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:06,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1715587412, now seen corresponding path program 1 times [2021-11-13 01:28:06,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:06,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280427336] [2021-11-13 01:28:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:06,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:06,623 INFO 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 01:28:06,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:06,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280427336] [2021-11-13 01:28:06,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280427336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:06,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:06,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:28:06,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450258718] [2021-11-13 01:28:06,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:06,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:28:06,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:06,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:28:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:28:06,629 INFO L87 Difference]: Start difference. First operand 842 states and 1131 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:09,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:09,755 INFO L93 Difference]: Finished difference Result 2172 states and 2915 transitions. [2021-11-13 01:28:09,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:28:09,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-13 01:28:09,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:09,766 INFO L225 Difference]: With dead ends: 2172 [2021-11-13 01:28:09,767 INFO L226 Difference]: Without dead ends: 2055 [2021-11-13 01:28:09,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:28:09,768 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 5166 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1626.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.43ms SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1957.02ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:09,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 2662 Invalid, 3136 Unknown, 0 Unchecked, 15.43ms Time], IncrementalHoareTripleChecker [556 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 1957.02ms Time] [2021-11-13 01:28:09,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2021-11-13 01:28:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 846. [2021-11-13 01:28:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 824 states have (on average 1.3774271844660195) internal successors, (1135), 845 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1135 transitions. [2021-11-13 01:28:09,921 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1135 transitions. Word has length 92 [2021-11-13 01:28:09,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:09,922 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 1135 transitions. [2021-11-13 01:28:09,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1135 transitions. [2021-11-13 01:28:09,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 01:28:09,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:09,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:09,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 01:28:09,926 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:09,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:09,927 INFO L85 PathProgramCache]: Analyzing trace with hash 343046810, now seen corresponding path program 1 times [2021-11-13 01:28:09,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:09,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022969794] [2021-11-13 01:28:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:09,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:10,071 INFO 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 01:28:10,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:10,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022969794] [2021-11-13 01:28:10,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022969794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:10,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:10,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:10,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502259509] [2021-11-13 01:28:10,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:10,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:10,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:10,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:10,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:10,075 INFO L87 Difference]: Start difference. First operand 846 states and 1135 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:11,654 INFO L93 Difference]: Finished difference Result 1590 states and 2131 transitions. [2021-11-13 01:28:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:28:11,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-13 01:28:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:11,662 INFO L225 Difference]: With dead ends: 1590 [2021-11-13 01:28:11,662 INFO L226 Difference]: Without dead ends: 1473 [2021-11-13 01:28:11,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:28:11,664 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1952 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 958.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.97ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1169.79ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:11,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1952 Valid, 2321 Invalid, 2093 Unknown, 0 Unchecked, 8.97ms Time], IncrementalHoareTripleChecker [34 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 1169.79ms Time] [2021-11-13 01:28:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2021-11-13 01:28:11,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 842. [2021-11-13 01:28:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3780487804878048) internal successors, (1130), 841 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1130 transitions. [2021-11-13 01:28:11,781 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1130 transitions. Word has length 93 [2021-11-13 01:28:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:11,782 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1130 transitions. [2021-11-13 01:28:11,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1130 transitions. [2021-11-13 01:28:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 01:28:11,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:11,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:28:11,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 01:28:11,786 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:11,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:11,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1488242838, now seen corresponding path program 1 times [2021-11-13 01:28:11,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:11,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243994122] [2021-11-13 01:28:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:11,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:11,921 INFO 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 01:28:11,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:11,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243994122] [2021-11-13 01:28:11,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243994122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:11,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:11,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:11,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069436723] [2021-11-13 01:28:11,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:11,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:11,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:11,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:11,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:11,924 INFO L87 Difference]: Start difference. First operand 842 states and 1130 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:13,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:13,708 INFO L93 Difference]: Finished difference Result 1649 states and 2216 transitions. [2021-11-13 01:28:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:28:13,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-13 01:28:13,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:13,716 INFO L225 Difference]: With dead ends: 1649 [2021-11-13 01:28:13,716 INFO L226 Difference]: Without dead ends: 1493 [2021-11-13 01:28:13,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:28:13,718 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 1820 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1075.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.68ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1319.50ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:13,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1820 Valid, 2760 Invalid, 2364 Unknown, 0 Unchecked, 10.68ms Time], IncrementalHoareTripleChecker [18 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 1319.50ms Time] [2021-11-13 01:28:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2021-11-13 01:28:13,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 838. [2021-11-13 01:28:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3786764705882353) internal successors, (1125), 837 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1125 transitions. [2021-11-13 01:28:13,847 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1125 transitions. Word has length 93 [2021-11-13 01:28:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:13,847 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1125 transitions. [2021-11-13 01:28:13,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1125 transitions. [2021-11-13 01:28:13,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:13,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:13,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:13,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 01:28:13,851 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:13,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:13,851 INFO L85 PathProgramCache]: Analyzing trace with hash 514536132, now seen corresponding path program 1 times [2021-11-13 01:28:13,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:13,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089916279] [2021-11-13 01:28:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:13,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:28:14,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:14,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089916279] [2021-11-13 01:28:14,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089916279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:14,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:14,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:14,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540025326] [2021-11-13 01:28:14,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:14,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:14,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:14,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:14,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:14,010 INFO L87 Difference]: Start difference. First operand 838 states and 1125 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:15,623 INFO L93 Difference]: Finished difference Result 1617 states and 2167 transitions. [2021-11-13 01:28:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:15,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:15,631 INFO L225 Difference]: With dead ends: 1617 [2021-11-13 01:28:15,631 INFO L226 Difference]: Without dead ends: 1469 [2021-11-13 01:28:15,632 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 01:28:15,633 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 2661 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1003.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.72ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1227.37ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:15,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2661 Valid, 3001 Invalid, 2330 Unknown, 0 Unchecked, 9.72ms Time], IncrementalHoareTripleChecker [39 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 1227.37ms Time] [2021-11-13 01:28:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-13 01:28:15,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 838. [2021-11-13 01:28:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3762254901960784) internal successors, (1123), 837 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:15,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1123 transitions. [2021-11-13 01:28:15,761 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1123 transitions. Word has length 94 [2021-11-13 01:28:15,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:15,761 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1123 transitions. [2021-11-13 01:28:15,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1123 transitions. [2021-11-13 01:28:15,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:15,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:15,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:15,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 01:28:15,765 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:15,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash 105690904, now seen corresponding path program 1 times [2021-11-13 01:28:15,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:15,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489333296] [2021-11-13 01:28:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:15,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:28:15,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:15,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489333296] [2021-11-13 01:28:15,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489333296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:15,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:15,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:15,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005391786] [2021-11-13 01:28:15,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:15,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:15,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:15,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:15,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:15,913 INFO L87 Difference]: Start difference. First operand 838 states and 1123 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:17,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:17,569 INFO L93 Difference]: Finished difference Result 1559 states and 2078 transitions. [2021-11-13 01:28:17,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:17,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:17,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:17,577 INFO L225 Difference]: With dead ends: 1559 [2021-11-13 01:28:17,577 INFO L226 Difference]: Without dead ends: 1445 [2021-11-13 01:28:17,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:28:17,579 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 1753 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1010.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 2389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.33ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1256.76ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:17,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 2869 Invalid, 2389 Unknown, 0 Unchecked, 9.33ms Time], IncrementalHoareTripleChecker [48 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 1256.76ms Time] [2021-11-13 01:28:17,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2021-11-13 01:28:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 838. [2021-11-13 01:28:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3737745098039216) internal successors, (1121), 837 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1121 transitions. [2021-11-13 01:28:17,714 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1121 transitions. Word has length 94 [2021-11-13 01:28:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:17,715 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1121 transitions. [2021-11-13 01:28:17,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1121 transitions. [2021-11-13 01:28:17,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:17,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:17,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:17,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 01:28:17,719 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:17,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:17,720 INFO L85 PathProgramCache]: Analyzing trace with hash 909968804, now seen corresponding path program 1 times [2021-11-13 01:28:17,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:17,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880215181] [2021-11-13 01:28:17,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:17,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:17,863 INFO 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 01:28:17,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:17,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880215181] [2021-11-13 01:28:17,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880215181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:17,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:17,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:17,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826313350] [2021-11-13 01:28:17,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:17,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:17,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:17,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:17,867 INFO L87 Difference]: Start difference. First operand 838 states and 1121 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:19,499 INFO L93 Difference]: Finished difference Result 1715 states and 2295 transitions. [2021-11-13 01:28:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:28:19,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:19,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:19,509 INFO L225 Difference]: With dead ends: 1715 [2021-11-13 01:28:19,509 INFO L226 Difference]: Without dead ends: 1493 [2021-11-13 01:28:19,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:28:19,511 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1852 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 954.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.40ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1171.71ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:19,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 2694 Invalid, 2280 Unknown, 0 Unchecked, 9.40ms Time], IncrementalHoareTripleChecker [19 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 1171.71ms Time] [2021-11-13 01:28:19,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2021-11-13 01:28:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 838. [2021-11-13 01:28:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3713235294117647) internal successors, (1119), 837 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1119 transitions. [2021-11-13 01:28:19,662 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1119 transitions. Word has length 94 [2021-11-13 01:28:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:19,663 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1119 transitions. [2021-11-13 01:28:19,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1119 transitions. [2021-11-13 01:28:19,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:19,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:19,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:19,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 01:28:19,666 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:19,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:19,667 INFO L85 PathProgramCache]: Analyzing trace with hash 556568795, now seen corresponding path program 1 times [2021-11-13 01:28:19,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:19,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577590795] [2021-11-13 01:28:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:19,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:19,815 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 01:28:19,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:19,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577590795] [2021-11-13 01:28:19,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577590795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:19,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:19,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:19,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559145466] [2021-11-13 01:28:19,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:19,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:19,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:19,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:19,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:19,818 INFO L87 Difference]: Start difference. First operand 838 states and 1119 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:21,369 INFO L93 Difference]: Finished difference Result 1553 states and 2067 transitions. [2021-11-13 01:28:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:21,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:21,376 INFO L225 Difference]: With dead ends: 1553 [2021-11-13 01:28:21,376 INFO L226 Difference]: Without dead ends: 1445 [2021-11-13 01:28:21,377 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 01:28:21,380 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 2472 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 906.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2472 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.66ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1115.90ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:21,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2472 Valid, 2452 Invalid, 2067 Unknown, 0 Unchecked, 8.66ms Time], IncrementalHoareTripleChecker [65 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1115.90ms Time] [2021-11-13 01:28:21,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2021-11-13 01:28:21,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 838. [2021-11-13 01:28:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3688725490196079) internal successors, (1117), 837 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1117 transitions. [2021-11-13 01:28:21,525 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1117 transitions. Word has length 94 [2021-11-13 01:28:21,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:21,526 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1117 transitions. [2021-11-13 01:28:21,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:21,526 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1117 transitions. [2021-11-13 01:28:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:21,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:21,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:21,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-13 01:28:21,529 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:21,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:21,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1887678960, now seen corresponding path program 1 times [2021-11-13 01:28:21,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:21,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155123946] [2021-11-13 01:28:21,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:21,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:21,676 INFO 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 01:28:21,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:21,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155123946] [2021-11-13 01:28:21,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155123946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:21,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:21,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:21,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498509356] [2021-11-13 01:28:21,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:21,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:21,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:21,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:21,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:21,680 INFO L87 Difference]: Start difference. First operand 838 states and 1117 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:23,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:23,322 INFO L93 Difference]: Finished difference Result 1555 states and 2066 transitions. [2021-11-13 01:28:23,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:23,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:23,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:23,328 INFO L225 Difference]: With dead ends: 1555 [2021-11-13 01:28:23,328 INFO L226 Difference]: Without dead ends: 1445 [2021-11-13 01:28:23,329 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 01:28:23,330 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1699 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 974.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.37ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1199.97ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:23,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 2715 Invalid, 2326 Unknown, 0 Unchecked, 9.37ms Time], IncrementalHoareTripleChecker [45 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 1199.97ms Time] [2021-11-13 01:28:23,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2021-11-13 01:28:23,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 838. [2021-11-13 01:28:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.366421568627451) internal successors, (1115), 837 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1115 transitions. [2021-11-13 01:28:23,479 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1115 transitions. Word has length 94 [2021-11-13 01:28:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:23,479 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1115 transitions. [2021-11-13 01:28:23,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1115 transitions. [2021-11-13 01:28:23,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:23,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:23,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:23,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-13 01:28:23,482 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:23,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2039186161, now seen corresponding path program 1 times [2021-11-13 01:28:23,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:23,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993764627] [2021-11-13 01:28:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:23,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:23,626 INFO 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 01:28:23,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:23,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993764627] [2021-11-13 01:28:23,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993764627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:23,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:23,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:23,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384265274] [2021-11-13 01:28:23,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:23,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:23,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:23,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:23,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:23,630 INFO L87 Difference]: Start difference. First operand 838 states and 1115 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:25,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:25,348 INFO L93 Difference]: Finished difference Result 1555 states and 2062 transitions. [2021-11-13 01:28:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:25,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:25,352 INFO L225 Difference]: With dead ends: 1555 [2021-11-13 01:28:25,352 INFO L226 Difference]: Without dead ends: 1445 [2021-11-13 01:28:25,353 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 01:28:25,354 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 1741 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 996.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.16ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1236.57ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:25,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1741 Valid, 2690 Invalid, 2239 Unknown, 0 Unchecked, 10.16ms Time], IncrementalHoareTripleChecker [47 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 1236.57ms Time] [2021-11-13 01:28:25,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2021-11-13 01:28:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 838. [2021-11-13 01:28:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3639705882352942) internal successors, (1113), 837 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1113 transitions. [2021-11-13 01:28:25,518 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1113 transitions. Word has length 94 [2021-11-13 01:28:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:25,518 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1113 transitions. [2021-11-13 01:28:25,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1113 transitions. [2021-11-13 01:28:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:25,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:25,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:25,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-13 01:28:25,522 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:25,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:25,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1846935907, now seen corresponding path program 1 times [2021-11-13 01:28:25,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:25,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927424536] [2021-11-13 01:28:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:25,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:28:25,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:25,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927424536] [2021-11-13 01:28:25,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927424536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:25,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:25,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:28:25,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756897683] [2021-11-13 01:28:25,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:25,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:28:25,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:25,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:28:25,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:28:25,758 INFO L87 Difference]: Start difference. First operand 838 states and 1113 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:29,070 INFO L93 Difference]: Finished difference Result 2219 states and 2960 transitions. [2021-11-13 01:28:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:28:29,070 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:29,073 INFO L225 Difference]: With dead ends: 2219 [2021-11-13 01:28:29,073 INFO L226 Difference]: Without dead ends: 2083 [2021-11-13 01:28:29,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:28:29,076 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 4562 mSDsluCounter, 2362 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1659.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4562 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.34ms SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2024.38ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:29,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4562 Valid, 3074 Invalid, 3294 Unknown, 0 Unchecked, 16.34ms Time], IncrementalHoareTripleChecker [487 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 2024.38ms Time] [2021-11-13 01:28:29,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-11-13 01:28:29,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 846. [2021-11-13 01:28:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 824 states have (on average 1.3604368932038835) internal successors, (1121), 845 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1121 transitions. [2021-11-13 01:28:29,219 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1121 transitions. Word has length 94 [2021-11-13 01:28:29,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:29,220 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 1121 transitions. [2021-11-13 01:28:29,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1121 transitions. [2021-11-13 01:28:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:29,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:29,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:29,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-13 01:28:29,223 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:29,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash -251225405, now seen corresponding path program 1 times [2021-11-13 01:28:29,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:29,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620909388] [2021-11-13 01:28:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:29,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:29,364 INFO 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 01:28:29,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:29,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620909388] [2021-11-13 01:28:29,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620909388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:29,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:29,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:29,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112347694] [2021-11-13 01:28:29,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:29,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:29,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:29,368 INFO L87 Difference]: Start difference. First operand 846 states and 1121 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:31,327 INFO L93 Difference]: Finished difference Result 1557 states and 2060 transitions. [2021-11-13 01:28:31,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:31,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:31,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:31,330 INFO L225 Difference]: With dead ends: 1557 [2021-11-13 01:28:31,330 INFO L226 Difference]: Without dead ends: 1453 [2021-11-13 01:28:31,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:28:31,331 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 1697 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1171.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.88ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1428.24ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:31,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1697 Valid, 2888 Invalid, 2448 Unknown, 0 Unchecked, 10.88ms Time], IncrementalHoareTripleChecker [46 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 1428.24ms Time] [2021-11-13 01:28:31,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-11-13 01:28:31,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 846. [2021-11-13 01:28:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 824 states have (on average 1.3592233009708738) internal successors, (1120), 845 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1120 transitions. [2021-11-13 01:28:31,482 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1120 transitions. Word has length 94 [2021-11-13 01:28:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:31,483 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 1120 transitions. [2021-11-13 01:28:31,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1120 transitions. [2021-11-13 01:28:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:31,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:31,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:31,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-13 01:28:31,486 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:31,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:31,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2102424565, now seen corresponding path program 1 times [2021-11-13 01:28:31,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:31,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803188580] [2021-11-13 01:28:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:31,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:28:31,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:31,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803188580] [2021-11-13 01:28:31,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803188580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:31,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:31,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:31,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543618956] [2021-11-13 01:28:31,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:31,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:31,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:31,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:31,633 INFO L87 Difference]: Start difference. First operand 846 states and 1120 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:33,321 INFO L93 Difference]: Finished difference Result 1553 states and 2054 transitions. [2021-11-13 01:28:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:33,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:33,324 INFO L225 Difference]: With dead ends: 1553 [2021-11-13 01:28:33,324 INFO L226 Difference]: Without dead ends: 1453 [2021-11-13 01:28:33,325 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 01:28:33,326 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 1727 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 997.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.90ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1219.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:33,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1727 Valid, 2892 Invalid, 2361 Unknown, 0 Unchecked, 8.90ms Time], IncrementalHoareTripleChecker [48 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 1219.83ms Time] [2021-11-13 01:28:33,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-11-13 01:28:33,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 846. [2021-11-13 01:28:33,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 824 states have (on average 1.358009708737864) internal successors, (1119), 845 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1119 transitions. [2021-11-13 01:28:33,465 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1119 transitions. Word has length 94 [2021-11-13 01:28:33,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:33,465 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 1119 transitions. [2021-11-13 01:28:33,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1119 transitions. [2021-11-13 01:28:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:33,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:33,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:33,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-13 01:28:33,468 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:33,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash -210482352, now seen corresponding path program 1 times [2021-11-13 01:28:33,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:33,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494298949] [2021-11-13 01:28:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:33,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:33,699 INFO 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 01:28:33,699 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:33,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494298949] [2021-11-13 01:28:33,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494298949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:33,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:33,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:28:33,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854205654] [2021-11-13 01:28:33,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:33,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:28:33,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:33,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:28:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:28:33,702 INFO L87 Difference]: Start difference. First operand 846 states and 1119 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:36,842 INFO L93 Difference]: Finished difference Result 2186 states and 2908 transitions. [2021-11-13 01:28:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:28:36,842 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:36,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:36,846 INFO L225 Difference]: With dead ends: 2186 [2021-11-13 01:28:36,846 INFO L226 Difference]: Without dead ends: 2060 [2021-11-13 01:28:36,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:28:36,848 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 5057 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1497.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5057 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.76ms SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1814.12ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:36,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5057 Valid, 2872 Invalid, 3054 Unknown, 0 Unchecked, 15.76ms Time], IncrementalHoareTripleChecker [518 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 1814.12ms Time] [2021-11-13 01:28:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2021-11-13 01:28:37,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 850. [2021-11-13 01:28:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.356280193236715) internal successors, (1123), 849 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1123 transitions. [2021-11-13 01:28:37,016 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1123 transitions. Word has length 94 [2021-11-13 01:28:37,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:37,016 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1123 transitions. [2021-11-13 01:28:37,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1123 transitions. [2021-11-13 01:28:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:37,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:37,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:28:37,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-13 01:28:37,019 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -619327580, now seen corresponding path program 1 times [2021-11-13 01:28:37,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:37,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389395883] [2021-11-13 01:28:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:37,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:37,153 INFO 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 01:28:37,154 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:37,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389395883] [2021-11-13 01:28:37,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389395883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:37,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:37,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:37,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835054001] [2021-11-13 01:28:37,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:37,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:37,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:37,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:37,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:37,157 INFO L87 Difference]: Start difference. First operand 850 states and 1123 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:38,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:38,808 INFO L93 Difference]: Finished difference Result 1561 states and 2061 transitions. [2021-11-13 01:28:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:38,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:38,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:38,811 INFO L225 Difference]: With dead ends: 1561 [2021-11-13 01:28:38,812 INFO L226 Difference]: Without dead ends: 1457 [2021-11-13 01:28:38,812 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 01:28:38,813 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 1736 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 940.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.88ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1155.79ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:38,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 2703 Invalid, 2223 Unknown, 0 Unchecked, 8.88ms Time], IncrementalHoareTripleChecker [47 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 1155.79ms Time] [2021-11-13 01:28:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-13 01:28:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 850. [2021-11-13 01:28:38,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.355072463768116) internal successors, (1122), 849 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1122 transitions. [2021-11-13 01:28:38,951 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1122 transitions. Word has length 94 [2021-11-13 01:28:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:38,951 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1122 transitions. [2021-11-13 01:28:38,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1122 transitions. [2021-11-13 01:28:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:38,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:38,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:38,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-13 01:28:38,953 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:38,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1893494246, now seen corresponding path program 1 times [2021-11-13 01:28:38,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:38,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935406835] [2021-11-13 01:28:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:38,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:39,130 INFO 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 01:28:39,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:39,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935406835] [2021-11-13 01:28:39,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935406835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:39,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:39,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:39,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303530943] [2021-11-13 01:28:39,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:39,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:39,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:39,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:39,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:39,135 INFO L87 Difference]: Start difference. First operand 850 states and 1122 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:40,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:40,844 INFO L93 Difference]: Finished difference Result 1557 states and 2056 transitions. [2021-11-13 01:28:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:40,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:40,849 INFO L225 Difference]: With dead ends: 1557 [2021-11-13 01:28:40,849 INFO L226 Difference]: Without dead ends: 1457 [2021-11-13 01:28:40,850 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 01:28:40,851 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 2410 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 952.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.90ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1168.94ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:40,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2410 Valid, 2412 Invalid, 2043 Unknown, 0 Unchecked, 9.90ms Time], IncrementalHoareTripleChecker [64 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 1168.94ms Time] [2021-11-13 01:28:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-13 01:28:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 850. [2021-11-13 01:28:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.353864734299517) internal successors, (1121), 849 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1121 transitions. [2021-11-13 01:28:41,033 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1121 transitions. Word has length 94 [2021-11-13 01:28:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:41,033 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1121 transitions. [2021-11-13 01:28:41,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1121 transitions. [2021-11-13 01:28:41,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:41,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:41,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:28:41,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-13 01:28:41,035 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:41,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1723188937, now seen corresponding path program 1 times [2021-11-13 01:28:41,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:41,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796111114] [2021-11-13 01:28:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:41,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:41,161 INFO 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 01:28:41,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:41,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796111114] [2021-11-13 01:28:41,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796111114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:41,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:41,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:41,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555659935] [2021-11-13 01:28:41,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:41,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:41,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:41,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:41,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:41,165 INFO L87 Difference]: Start difference. First operand 850 states and 1121 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:43,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:43,047 INFO L93 Difference]: Finished difference Result 1555 states and 2052 transitions. [2021-11-13 01:28:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:43,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:43,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:43,050 INFO L225 Difference]: With dead ends: 1555 [2021-11-13 01:28:43,050 INFO L226 Difference]: Without dead ends: 1457 [2021-11-13 01:28:43,050 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 01:28:43,051 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 1740 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1061.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.74ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1295.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:43,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1740 Valid, 2610 Invalid, 2140 Unknown, 0 Unchecked, 10.74ms Time], IncrementalHoareTripleChecker [48 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 1295.51ms Time] [2021-11-13 01:28:43,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-13 01:28:43,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 850. [2021-11-13 01:28:43,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3526570048309179) internal successors, (1120), 849 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:43,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1120 transitions. [2021-11-13 01:28:43,208 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1120 transitions. Word has length 94 [2021-11-13 01:28:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:43,208 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1120 transitions. [2021-11-13 01:28:43,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:43,208 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1120 transitions. [2021-11-13 01:28:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:43,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:43,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:28:43,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-13 01:28:43,210 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:43,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:43,211 INFO L85 PathProgramCache]: Analyzing trace with hash -211515308, now seen corresponding path program 1 times [2021-11-13 01:28:43,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:43,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113111105] [2021-11-13 01:28:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:43,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:43,332 INFO 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 01:28:43,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:43,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113111105] [2021-11-13 01:28:43,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113111105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:43,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:43,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:43,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584045143] [2021-11-13 01:28:43,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:43,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:43,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:43,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:43,335 INFO L87 Difference]: Start difference. First operand 850 states and 1120 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:44,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:44,990 INFO L93 Difference]: Finished difference Result 1561 states and 2056 transitions. [2021-11-13 01:28:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:44,993 INFO L225 Difference]: With dead ends: 1561 [2021-11-13 01:28:44,994 INFO L226 Difference]: Without dead ends: 1457 [2021-11-13 01:28:44,994 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 01:28:44,995 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 2408 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 899.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.61ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1108.17ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:44,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2408 Valid, 2411 Invalid, 2031 Unknown, 0 Unchecked, 9.61ms Time], IncrementalHoareTripleChecker [64 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 1108.17ms Time] [2021-11-13 01:28:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-13 01:28:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 850. [2021-11-13 01:28:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3514492753623188) internal successors, (1119), 849 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1119 transitions. [2021-11-13 01:28:45,235 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1119 transitions. Word has length 94 [2021-11-13 01:28:45,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:45,236 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1119 transitions. [2021-11-13 01:28:45,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1119 transitions. [2021-11-13 01:28:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:28:45,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:45,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:45,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-13 01:28:45,239 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:45,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2062930942, now seen corresponding path program 1 times [2021-11-13 01:28:45,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:45,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133407354] [2021-11-13 01:28:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:45,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:28:45,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:45,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133407354] [2021-11-13 01:28:45,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133407354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:45,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:45,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:45,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608678777] [2021-11-13 01:28:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:45,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:45,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:45,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:45,376 INFO L87 Difference]: Start difference. First operand 850 states and 1119 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:47,133 INFO L93 Difference]: Finished difference Result 1557 states and 2051 transitions. [2021-11-13 01:28:47,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:47,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 01:28:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:47,137 INFO L225 Difference]: With dead ends: 1557 [2021-11-13 01:28:47,137 INFO L226 Difference]: Without dead ends: 1457 [2021-11-13 01:28:47,137 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 01:28:47,138 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 1724 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 987.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.48ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1226.05ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:47,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1724 Valid, 2870 Invalid, 2326 Unknown, 0 Unchecked, 9.48ms Time], IncrementalHoareTripleChecker [48 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 1226.05ms Time] [2021-11-13 01:28:47,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-13 01:28:47,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 850. [2021-11-13 01:28:47,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3502415458937198) internal successors, (1118), 849 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:47,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1118 transitions. [2021-11-13 01:28:47,294 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1118 transitions. Word has length 94 [2021-11-13 01:28:47,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:47,294 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1118 transitions. [2021-11-13 01:28:47,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:47,294 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1118 transitions. [2021-11-13 01:28:47,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 01:28:47,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:47,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:47,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-13 01:28:47,296 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:47,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:47,297 INFO L85 PathProgramCache]: Analyzing trace with hash -853175475, now seen corresponding path program 1 times [2021-11-13 01:28:47,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:47,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724966065] [2021-11-13 01:28:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:47,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:47,421 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 01:28:47,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:47,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724966065] [2021-11-13 01:28:47,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724966065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:47,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:47,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:47,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281245513] [2021-11-13 01:28:47,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:47,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:47,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:47,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:47,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:47,424 INFO L87 Difference]: Start difference. First operand 850 states and 1118 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:49,206 INFO L93 Difference]: Finished difference Result 1605 states and 2121 transitions. [2021-11-13 01:28:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:28:49,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 01:28:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:49,211 INFO L225 Difference]: With dead ends: 1605 [2021-11-13 01:28:49,211 INFO L226 Difference]: Without dead ends: 1469 [2021-11-13 01:28:49,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:28:49,213 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 2602 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 957.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2602 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.25ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1173.65ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:49,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2602 Valid, 2645 Invalid, 2236 Unknown, 0 Unchecked, 9.25ms Time], IncrementalHoareTripleChecker [47 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 1173.65ms Time] [2021-11-13 01:28:49,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-13 01:28:49,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 842. [2021-11-13 01:28:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.351219512195122) internal successors, (1108), 841 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1108 transitions. [2021-11-13 01:28:49,457 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1108 transitions. Word has length 95 [2021-11-13 01:28:49,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:49,457 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1108 transitions. [2021-11-13 01:28:49,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1108 transitions. [2021-11-13 01:28:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 01:28:49,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:49,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:49,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-13 01:28:49,472 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:49,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:49,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1662722339, now seen corresponding path program 1 times [2021-11-13 01:28:49,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:49,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135182438] [2021-11-13 01:28:49,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:49,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:49,600 INFO 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 01:28:49,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:49,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135182438] [2021-11-13 01:28:49,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135182438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:49,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:49,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:49,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016593388] [2021-11-13 01:28:49,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:49,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:49,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:49,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:49,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:49,603 INFO L87 Difference]: Start difference. First operand 842 states and 1108 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:51,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:51,360 INFO L93 Difference]: Finished difference Result 1595 states and 2105 transitions. [2021-11-13 01:28:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:28:51,360 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 01:28:51,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:51,362 INFO L225 Difference]: With dead ends: 1595 [2021-11-13 01:28:51,363 INFO L226 Difference]: Without dead ends: 1469 [2021-11-13 01:28:51,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:28:51,364 INFO L933 BasicCegarLoop]: 682 mSDtfsCounter, 2510 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 2251 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 962.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2510 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.14ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1185.10ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:51,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2510 Valid, 2745 Invalid, 2298 Unknown, 0 Unchecked, 10.14ms Time], IncrementalHoareTripleChecker [47 Valid, 2251 Invalid, 0 Unknown, 0 Unchecked, 1185.10ms Time] [2021-11-13 01:28:51,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-13 01:28:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 838. [2021-11-13 01:28:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 816 states have (on average 1.3517156862745099) internal successors, (1103), 837 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:51,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1103 transitions. [2021-11-13 01:28:51,546 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1103 transitions. Word has length 95 [2021-11-13 01:28:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:51,546 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1103 transitions. [2021-11-13 01:28:51,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1103 transitions. [2021-11-13 01:28:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 01:28:51,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:51,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:51,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-13 01:28:51,548 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:51,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1984334520, now seen corresponding path program 1 times [2021-11-13 01:28:51,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:51,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163026901] [2021-11-13 01:28:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:51,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:28:51,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:51,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163026901] [2021-11-13 01:28:51,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163026901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:51,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:51,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:28:51,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694142075] [2021-11-13 01:28:51,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:51,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:28:51,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:51,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:28:51,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:28:51,947 INFO L87 Difference]: Start difference. First operand 838 states and 1103 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:53,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:53,967 INFO L93 Difference]: Finished difference Result 1720 states and 2274 transitions. [2021-11-13 01:28:53,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:53,968 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-13 01:28:53,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:53,970 INFO L225 Difference]: With dead ends: 1720 [2021-11-13 01:28:53,970 INFO L226 Difference]: Without dead ends: 1627 [2021-11-13 01:28:53,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:28:53,972 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 3044 mSDsluCounter, 4082 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 739.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 4990 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.54ms SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 892.09ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:53,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3044 Valid, 4990 Invalid, 1259 Unknown, 0 Unchecked, 19.54ms Time], IncrementalHoareTripleChecker [97 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 892.09ms Time] [2021-11-13 01:28:53,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-11-13 01:28:54,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 837. [2021-11-13 01:28:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 815 states have (on average 1.350920245398773) internal successors, (1101), 836 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1101 transitions. [2021-11-13 01:28:54,229 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1101 transitions. Word has length 95 [2021-11-13 01:28:54,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:54,229 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1101 transitions. [2021-11-13 01:28:54,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1101 transitions. [2021-11-13 01:28:54,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:28:54,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:54,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:54,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-13 01:28:54,232 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:54,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:54,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1766740068, now seen corresponding path program 1 times [2021-11-13 01:28:54,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:54,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084705540] [2021-11-13 01:28:54,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:54,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:54,370 INFO 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 01:28:54,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:54,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084705540] [2021-11-13 01:28:54,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084705540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:54,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:54,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:54,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540098449] [2021-11-13 01:28:54,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:54,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:54,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:54,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:54,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:54,375 INFO L87 Difference]: Start difference. First operand 837 states and 1101 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:56,294 INFO L93 Difference]: Finished difference Result 1492 states and 1947 transitions. [2021-11-13 01:28:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:28:56,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:28:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:56,297 INFO L225 Difference]: With dead ends: 1492 [2021-11-13 01:28:56,297 INFO L226 Difference]: Without dead ends: 1396 [2021-11-13 01:28:56,297 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 01:28:56,298 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 2460 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1056.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.27ms SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1290.55ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:56,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2460 Valid, 2665 Invalid, 2371 Unknown, 0 Unchecked, 10.27ms Time], IncrementalHoareTripleChecker [118 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 1290.55ms Time] [2021-11-13 01:28:56,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-11-13 01:28:56,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 837. [2021-11-13 01:28:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 815 states have (on average 1.3484662576687116) internal successors, (1099), 836 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:56,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1099 transitions. [2021-11-13 01:28:56,493 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1099 transitions. Word has length 96 [2021-11-13 01:28:56,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:56,494 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1099 transitions. [2021-11-13 01:28:56,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:56,494 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1099 transitions. [2021-11-13 01:28:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:28:56,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:56,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:28:56,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-13 01:28:56,496 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:56,496 INFO L85 PathProgramCache]: Analyzing trace with hash 500756844, now seen corresponding path program 1 times [2021-11-13 01:28:56,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:56,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415231346] [2021-11-13 01:28:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:56,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:56,624 INFO 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 01:28:56,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:56,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415231346] [2021-11-13 01:28:56,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415231346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:56,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:56,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:56,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493733181] [2021-11-13 01:28:56,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:56,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:56,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:56,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:56,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:56,627 INFO L87 Difference]: Start difference. First operand 837 states and 1099 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:58,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:58,358 INFO L93 Difference]: Finished difference Result 1496 states and 1950 transitions. [2021-11-13 01:28:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:28:58,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:28:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:58,360 INFO L225 Difference]: With dead ends: 1496 [2021-11-13 01:28:58,360 INFO L226 Difference]: Without dead ends: 1396 [2021-11-13 01:28:58,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:28:58,361 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 2698 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 887.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.97ms SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1092.23ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:58,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2698 Valid, 2163 Invalid, 2098 Unknown, 0 Unchecked, 8.97ms Time], IncrementalHoareTripleChecker [161 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 1092.23ms Time] [2021-11-13 01:28:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-11-13 01:28:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 837. [2021-11-13 01:28:58,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 815 states have (on average 1.3460122699386503) internal successors, (1097), 836 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1097 transitions. [2021-11-13 01:28:58,584 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1097 transitions. Word has length 96 [2021-11-13 01:28:58,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:58,585 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1097 transitions. [2021-11-13 01:28:58,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:28:58,585 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1097 transitions. [2021-11-13 01:28:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:28:58,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:58,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:58,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-13 01:28:58,587 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:28:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:58,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1255893419, now seen corresponding path program 1 times [2021-11-13 01:28:58,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:28:58,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227628282] [2021-11-13 01:28:58,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:58,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:28:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:28:58,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:28:58,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227628282] [2021-11-13 01:28:58,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227628282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:58,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:58,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:28:58,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131406557] [2021-11-13 01:28:58,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:58,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:28:58,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:28:58,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:28:58,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:28:58,730 INFO L87 Difference]: Start difference. First operand 837 states and 1097 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:00,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:00,661 INFO L93 Difference]: Finished difference Result 1496 states and 1946 transitions. [2021-11-13 01:29:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:00,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:00,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:00,664 INFO L225 Difference]: With dead ends: 1496 [2021-11-13 01:29:00,665 INFO L226 Difference]: Without dead ends: 1396 [2021-11-13 01:29:00,666 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 01:29:00,666 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 2448 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1042.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.00ms SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1269.91ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:00,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2448 Valid, 2609 Invalid, 2270 Unknown, 0 Unchecked, 10.00ms Time], IncrementalHoareTripleChecker [119 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 1269.91ms Time] [2021-11-13 01:29:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-11-13 01:29:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 837. [2021-11-13 01:29:00,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 815 states have (on average 1.343558282208589) internal successors, (1095), 836 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:00,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1095 transitions. [2021-11-13 01:29:00,911 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1095 transitions. Word has length 96 [2021-11-13 01:29:00,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:00,911 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1095 transitions. [2021-11-13 01:29:00,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:00,911 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1095 transitions. [2021-11-13 01:29:00,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:00,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:00,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:00,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-13 01:29:00,913 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:00,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1126876775, now seen corresponding path program 1 times [2021-11-13 01:29:00,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:00,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974021822] [2021-11-13 01:29:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:00,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:01,041 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 01:29:01,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:01,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974021822] [2021-11-13 01:29:01,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974021822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:01,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:01,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:01,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946756043] [2021-11-13 01:29:01,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:01,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:01,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:01,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:01,044 INFO L87 Difference]: Start difference. First operand 837 states and 1095 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:02,965 INFO L93 Difference]: Finished difference Result 1560 states and 2044 transitions. [2021-11-13 01:29:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:02,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:02,967 INFO L225 Difference]: With dead ends: 1560 [2021-11-13 01:29:02,967 INFO L226 Difference]: Without dead ends: 1444 [2021-11-13 01:29:02,968 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 01:29:02,968 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 1671 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1007.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.26ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1237.94ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:02,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 2859 Invalid, 2269 Unknown, 0 Unchecked, 10.26ms Time], IncrementalHoareTripleChecker [46 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 1237.94ms Time] [2021-11-13 01:29:02,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-11-13 01:29:03,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 837. [2021-11-13 01:29:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 815 states have (on average 1.3411042944785276) internal successors, (1093), 836 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1093 transitions. [2021-11-13 01:29:03,157 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1093 transitions. Word has length 96 [2021-11-13 01:29:03,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:03,157 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1093 transitions. [2021-11-13 01:29:03,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1093 transitions. [2021-11-13 01:29:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:03,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:03,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:03,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-13 01:29:03,159 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:03,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:03,159 INFO L85 PathProgramCache]: Analyzing trace with hash 443260260, now seen corresponding path program 1 times [2021-11-13 01:29:03,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:03,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863416225] [2021-11-13 01:29:03,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:03,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:03,291 INFO 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 01:29:03,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:03,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863416225] [2021-11-13 01:29:03,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863416225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:03,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:03,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:03,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910766278] [2021-11-13 01:29:03,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:03,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:03,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:03,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:03,295 INFO L87 Difference]: Start difference. First operand 837 states and 1093 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:05,218 INFO L93 Difference]: Finished difference Result 1496 states and 1942 transitions. [2021-11-13 01:29:05,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:05,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:05,220 INFO L225 Difference]: With dead ends: 1496 [2021-11-13 01:29:05,220 INFO L226 Difference]: Without dead ends: 1396 [2021-11-13 01:29:05,221 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 01:29:05,221 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 2440 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1010.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2440 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.34ms SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1239.12ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:05,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2440 Valid, 2665 Invalid, 2282 Unknown, 0 Unchecked, 10.34ms Time], IncrementalHoareTripleChecker [119 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1239.12ms Time] [2021-11-13 01:29:05,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-11-13 01:29:05,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 837. [2021-11-13 01:29:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 815 states have (on average 1.3386503067484663) internal successors, (1091), 836 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1091 transitions. [2021-11-13 01:29:05,470 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1091 transitions. Word has length 96 [2021-11-13 01:29:05,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:05,470 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1091 transitions. [2021-11-13 01:29:05,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:05,470 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1091 transitions. [2021-11-13 01:29:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:05,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:05,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:05,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-13 01:29:05,472 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:05,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:05,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1939509934, now seen corresponding path program 1 times [2021-11-13 01:29:05,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:05,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571682814] [2021-11-13 01:29:05,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:05,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:05,617 INFO 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 01:29:05,617 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:05,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571682814] [2021-11-13 01:29:05,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571682814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:05,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:05,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:05,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594072529] [2021-11-13 01:29:05,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:05,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:05,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:05,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:05,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:05,620 INFO L87 Difference]: Start difference. First operand 837 states and 1091 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:07,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:07,607 INFO L93 Difference]: Finished difference Result 1560 states and 2038 transitions. [2021-11-13 01:29:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:07,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:07,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:07,609 INFO L225 Difference]: With dead ends: 1560 [2021-11-13 01:29:07,609 INFO L226 Difference]: Without dead ends: 1444 [2021-11-13 01:29:07,609 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 01:29:07,610 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1738 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1024.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.83ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1253.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:07,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1738 Valid, 2866 Invalid, 2182 Unknown, 0 Unchecked, 10.83ms Time], IncrementalHoareTripleChecker [49 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 1253.83ms Time] [2021-11-13 01:29:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-11-13 01:29:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 837. [2021-11-13 01:29:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 815 states have (on average 1.336196319018405) internal successors, (1089), 836 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:07,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1089 transitions. [2021-11-13 01:29:07,791 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1089 transitions. Word has length 96 [2021-11-13 01:29:07,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:07,792 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1089 transitions. [2021-11-13 01:29:07,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:07,792 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1089 transitions. [2021-11-13 01:29:07,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:07,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:07,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:07,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-13 01:29:07,795 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:07,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:07,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1544761606, now seen corresponding path program 1 times [2021-11-13 01:29:07,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:07,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945293744] [2021-11-13 01:29:07,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:07,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:07,993 INFO 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 01:29:07,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:07,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945293744] [2021-11-13 01:29:07,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945293744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:07,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:07,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:29:07,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511016395] [2021-11-13 01:29:07,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:07,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:29:07,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:29:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:29:07,995 INFO L87 Difference]: Start difference. First operand 837 states and 1089 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:11,304 INFO L93 Difference]: Finished difference Result 2246 states and 2958 transitions. [2021-11-13 01:29:11,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:29:11,307 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:11,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:11,309 INFO L225 Difference]: With dead ends: 2246 [2021-11-13 01:29:11,309 INFO L226 Difference]: Without dead ends: 2090 [2021-11-13 01:29:11,309 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 01:29:11,310 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 4437 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 3295 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1493.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 3780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.01ms SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 3295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1809.19ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:11,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4437 Valid, 3759 Invalid, 3780 Unknown, 0 Unchecked, 15.01ms Time], IncrementalHoareTripleChecker [485 Valid, 3295 Invalid, 0 Unknown, 0 Unchecked, 1809.19ms Time] [2021-11-13 01:29:11,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-11-13 01:29:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 845. [2021-11-13 01:29:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.3329283110571082) internal successors, (1097), 844 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1097 transitions. [2021-11-13 01:29:11,529 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1097 transitions. Word has length 96 [2021-11-13 01:29:11,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:11,530 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1097 transitions. [2021-11-13 01:29:11,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1097 transitions. [2021-11-13 01:29:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:11,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:11,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:11,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-13 01:29:11,532 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:11,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:11,533 INFO L85 PathProgramCache]: Analyzing trace with hash -52113932, now seen corresponding path program 1 times [2021-11-13 01:29:11,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:11,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337864048] [2021-11-13 01:29:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:11,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:11,648 INFO 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 01:29:11,648 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:11,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337864048] [2021-11-13 01:29:11,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337864048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:11,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:11,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:11,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817005447] [2021-11-13 01:29:11,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:11,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:11,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:11,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:11,650 INFO L87 Difference]: Start difference. First operand 845 states and 1097 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:13,334 INFO L93 Difference]: Finished difference Result 1496 states and 1937 transitions. [2021-11-13 01:29:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:13,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:13,336 INFO L225 Difference]: With dead ends: 1496 [2021-11-13 01:29:13,336 INFO L226 Difference]: Without dead ends: 1404 [2021-11-13 01:29:13,336 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 01:29:13,337 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 2437 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 871.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.87ms SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1067.78ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:13,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2437 Valid, 2793 Invalid, 2382 Unknown, 0 Unchecked, 8.87ms Time], IncrementalHoareTripleChecker [118 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 1067.78ms Time] [2021-11-13 01:29:13,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-13 01:29:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 845. [2021-11-13 01:29:13,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.330498177399757) internal successors, (1095), 844 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1095 transitions. [2021-11-13 01:29:13,502 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1095 transitions. Word has length 96 [2021-11-13 01:29:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:13,502 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1095 transitions. [2021-11-13 01:29:13,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:13,503 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1095 transitions. [2021-11-13 01:29:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:13,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:13,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:13,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-13 01:29:13,504 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:13,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1952926503, now seen corresponding path program 1 times [2021-11-13 01:29:13,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:13,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003660534] [2021-11-13 01:29:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:13,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:13,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:13,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003660534] [2021-11-13 01:29:13,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003660534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:13,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:13,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:13,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027842702] [2021-11-13 01:29:13,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:13,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:13,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:13,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:13,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:13,606 INFO L87 Difference]: Start difference. First operand 845 states and 1095 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:15,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:15,410 INFO L93 Difference]: Finished difference Result 1500 states and 1939 transitions. [2021-11-13 01:29:15,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:29:15,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:15,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:15,412 INFO L225 Difference]: With dead ends: 1500 [2021-11-13 01:29:15,412 INFO L226 Difference]: Without dead ends: 1404 [2021-11-13 01:29:15,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:29:15,414 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1810 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 860.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.31ms SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1053.21ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:15,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1810 Valid, 2275 Invalid, 2060 Unknown, 0 Unchecked, 8.31ms Time], IncrementalHoareTripleChecker [104 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 1053.21ms Time] [2021-11-13 01:29:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-13 01:29:15,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 845. [2021-11-13 01:29:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.3280680437424057) internal successors, (1093), 844 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1093 transitions. [2021-11-13 01:29:15,588 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1093 transitions. Word has length 96 [2021-11-13 01:29:15,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:15,589 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1093 transitions. [2021-11-13 01:29:15,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:15,589 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1093 transitions. [2021-11-13 01:29:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:15,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:15,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:15,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-13 01:29:15,591 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:15,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1693346717, now seen corresponding path program 1 times [2021-11-13 01:29:15,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:15,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163430624] [2021-11-13 01:29:15,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:15,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:15,707 INFO 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 01:29:15,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:15,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163430624] [2021-11-13 01:29:15,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163430624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:15,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:15,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:15,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954632484] [2021-11-13 01:29:15,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:15,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:15,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:15,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:15,710 INFO L87 Difference]: Start difference. First operand 845 states and 1093 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:17,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:17,482 INFO L93 Difference]: Finished difference Result 1500 states and 1935 transitions. [2021-11-13 01:29:17,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:17,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:17,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:17,484 INFO L225 Difference]: With dead ends: 1500 [2021-11-13 01:29:17,484 INFO L226 Difference]: Without dead ends: 1404 [2021-11-13 01:29:17,485 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 01:29:17,486 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 2432 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 911.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.20ms SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1114.38ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:17,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2432 Valid, 2700 Invalid, 2277 Unknown, 0 Unchecked, 9.20ms Time], IncrementalHoareTripleChecker [119 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 1114.38ms Time] [2021-11-13 01:29:17,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-13 01:29:17,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 845. [2021-11-13 01:29:17,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.3256379100850546) internal successors, (1091), 844 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:17,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1091 transitions. [2021-11-13 01:29:17,694 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1091 transitions. Word has length 96 [2021-11-13 01:29:17,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:17,694 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1091 transitions. [2021-11-13 01:29:17,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:17,694 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1091 transitions. [2021-11-13 01:29:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:17,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:17,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:17,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-13 01:29:17,714 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:17,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:17,715 INFO L85 PathProgramCache]: Analyzing trace with hash 427743812, now seen corresponding path program 1 times [2021-11-13 01:29:17,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:17,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149311709] [2021-11-13 01:29:17,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:17,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:17,814 INFO 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 01:29:17,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:17,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149311709] [2021-11-13 01:29:17,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149311709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:17,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:17,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:17,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460447253] [2021-11-13 01:29:17,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:17,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:17,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:17,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:17,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:17,817 INFO L87 Difference]: Start difference. First operand 845 states and 1091 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:19,418 INFO L93 Difference]: Finished difference Result 1409 states and 1809 transitions. [2021-11-13 01:29:19,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:29:19,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:19,434 INFO L225 Difference]: With dead ends: 1409 [2021-11-13 01:29:19,434 INFO L226 Difference]: Without dead ends: 1404 [2021-11-13 01:29:19,435 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 01:29:19,435 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 2597 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 797.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2597 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.22ms SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 976.40ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:19,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2597 Valid, 2269 Invalid, 2100 Unknown, 0 Unchecked, 8.22ms Time], IncrementalHoareTripleChecker [157 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 976.40ms Time] [2021-11-13 01:29:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-13 01:29:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 845. [2021-11-13 01:29:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.3232077764277035) internal successors, (1089), 844 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1089 transitions. [2021-11-13 01:29:19,621 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1089 transitions. Word has length 96 [2021-11-13 01:29:19,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:19,621 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1089 transitions. [2021-11-13 01:29:19,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:19,622 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1089 transitions. [2021-11-13 01:29:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:19,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:19,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:19,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-13 01:29:19,624 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash -375995292, now seen corresponding path program 1 times [2021-11-13 01:29:19,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:19,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180757493] [2021-11-13 01:29:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:19,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:19,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:19,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180757493] [2021-11-13 01:29:19,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180757493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:19,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:19,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:19,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164376257] [2021-11-13 01:29:19,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:19,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:19,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:19,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:19,736 INFO L87 Difference]: Start difference. First operand 845 states and 1089 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:21,477 INFO L93 Difference]: Finished difference Result 1409 states and 1805 transitions. [2021-11-13 01:29:21,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:21,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:21,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:21,479 INFO L225 Difference]: With dead ends: 1409 [2021-11-13 01:29:21,480 INFO L226 Difference]: Without dead ends: 1404 [2021-11-13 01:29:21,480 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 01:29:21,481 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 2419 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 881.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.80ms SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1083.19ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:21,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2419 Valid, 2720 Invalid, 2266 Unknown, 0 Unchecked, 8.80ms Time], IncrementalHoareTripleChecker [119 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 1083.19ms Time] [2021-11-13 01:29:21,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-13 01:29:21,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 845. [2021-11-13 01:29:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.3207776427703524) internal successors, (1087), 844 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:21,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1087 transitions. [2021-11-13 01:29:21,707 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1087 transitions. Word has length 96 [2021-11-13 01:29:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:21,708 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1087 transitions. [2021-11-13 01:29:21,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1087 transitions. [2021-11-13 01:29:21,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:21,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:21,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:21,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-13 01:29:21,709 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:21,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1536201810, now seen corresponding path program 1 times [2021-11-13 01:29:21,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:21,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69055688] [2021-11-13 01:29:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:21,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:21,814 INFO 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 01:29:21,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:21,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69055688] [2021-11-13 01:29:21,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69055688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:21,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:21,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:21,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145074337] [2021-11-13 01:29:21,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:21,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:21,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:21,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:21,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:21,817 INFO L87 Difference]: Start difference. First operand 845 states and 1087 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:23,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:23,756 INFO L93 Difference]: Finished difference Result 1469 states and 1892 transitions. [2021-11-13 01:29:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:23,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:23,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:23,758 INFO L225 Difference]: With dead ends: 1469 [2021-11-13 01:29:23,758 INFO L226 Difference]: Without dead ends: 1452 [2021-11-13 01:29:23,759 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 01:29:23,760 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1653 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 979.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.45ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1195.41ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:23,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1653 Valid, 3098 Invalid, 2412 Unknown, 0 Unchecked, 9.45ms Time], IncrementalHoareTripleChecker [46 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 1195.41ms Time] [2021-11-13 01:29:23,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-11-13 01:29:23,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 845. [2021-11-13 01:29:23,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.3183475091130012) internal successors, (1085), 844 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:23,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1085 transitions. [2021-11-13 01:29:23,943 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1085 transitions. Word has length 96 [2021-11-13 01:29:23,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:23,943 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1085 transitions. [2021-11-13 01:29:23,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:23,943 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1085 transitions. [2021-11-13 01:29:23,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:23,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:23,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:23,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-13 01:29:23,944 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:23,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:23,945 INFO L85 PathProgramCache]: Analyzing trace with hash 134588212, now seen corresponding path program 1 times [2021-11-13 01:29:23,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:23,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095007124] [2021-11-13 01:29:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:23,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:24,053 INFO 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 01:29:24,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:24,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095007124] [2021-11-13 01:29:24,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095007124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:24,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:24,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:24,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370874681] [2021-11-13 01:29:24,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:24,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:24,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:24,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:24,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:24,056 INFO L87 Difference]: Start difference. First operand 845 states and 1085 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:25,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:25,720 INFO L93 Difference]: Finished difference Result 1500 states and 1925 transitions. [2021-11-13 01:29:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:25,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:25,722 INFO L225 Difference]: With dead ends: 1500 [2021-11-13 01:29:25,722 INFO L226 Difference]: Without dead ends: 1404 [2021-11-13 01:29:25,722 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 01:29:25,723 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 2418 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 849.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.94ms SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1037.02ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:25,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2418 Valid, 2751 Invalid, 2275 Unknown, 0 Unchecked, 7.94ms Time], IncrementalHoareTripleChecker [119 Valid, 2156 Invalid, 0 Unknown, 0 Unchecked, 1037.02ms Time] [2021-11-13 01:29:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-13 01:29:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 845. [2021-11-13 01:29:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.3159173754556501) internal successors, (1083), 844 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1083 transitions. [2021-11-13 01:29:25,926 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1083 transitions. Word has length 96 [2021-11-13 01:29:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:25,927 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1083 transitions. [2021-11-13 01:29:25,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:25,927 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1083 transitions. [2021-11-13 01:29:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:25,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:25,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:25,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-13 01:29:25,928 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1131131867, now seen corresponding path program 1 times [2021-11-13 01:29:25,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:25,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252880671] [2021-11-13 01:29:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:25,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:26,039 INFO 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 01:29:26,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:26,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252880671] [2021-11-13 01:29:26,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252880671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:26,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:26,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:26,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263114395] [2021-11-13 01:29:26,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:26,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:26,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:26,043 INFO L87 Difference]: Start difference. First operand 845 states and 1083 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:27,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:27,675 INFO L93 Difference]: Finished difference Result 1409 states and 1799 transitions. [2021-11-13 01:29:27,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:29:27,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:27,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:27,677 INFO L225 Difference]: With dead ends: 1409 [2021-11-13 01:29:27,677 INFO L226 Difference]: Without dead ends: 1404 [2021-11-13 01:29:27,677 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 01:29:27,678 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1781 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 771.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.94ms SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 953.28ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:27,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1781 Valid, 2317 Invalid, 2049 Unknown, 0 Unchecked, 7.94ms Time], IncrementalHoareTripleChecker [103 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 953.28ms Time] [2021-11-13 01:29:27,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-13 01:29:27,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 845. [2021-11-13 01:29:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.313487241798299) internal successors, (1081), 844 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1081 transitions. [2021-11-13 01:29:27,914 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1081 transitions. Word has length 96 [2021-11-13 01:29:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:27,914 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1081 transitions. [2021-11-13 01:29:27,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1081 transitions. [2021-11-13 01:29:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:27,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:27,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:27,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-13 01:29:27,916 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1928248723, now seen corresponding path program 1 times [2021-11-13 01:29:27,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:27,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324716223] [2021-11-13 01:29:27,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:27,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:28,039 INFO 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 01:29:28,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:28,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324716223] [2021-11-13 01:29:28,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324716223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:28,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:28,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:28,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226980376] [2021-11-13 01:29:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:28,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:28,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:28,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:28,041 INFO L87 Difference]: Start difference. First operand 845 states and 1081 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:30,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:30,108 INFO L93 Difference]: Finished difference Result 1498 states and 1917 transitions. [2021-11-13 01:29:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:30,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:30,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:30,110 INFO L225 Difference]: With dead ends: 1498 [2021-11-13 01:29:30,110 INFO L226 Difference]: Without dead ends: 1404 [2021-11-13 01:29:30,111 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 01:29:30,111 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 2411 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1051.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.50ms SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1299.09ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:30,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2411 Valid, 2840 Invalid, 2351 Unknown, 0 Unchecked, 10.50ms Time], IncrementalHoareTripleChecker [118 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 1299.09ms Time] [2021-11-13 01:29:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-13 01:29:30,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 845. [2021-11-13 01:29:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.3122721749696233) internal successors, (1080), 844 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1080 transitions. [2021-11-13 01:29:30,308 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1080 transitions. Word has length 96 [2021-11-13 01:29:30,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:30,309 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1080 transitions. [2021-11-13 01:29:30,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:30,309 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1080 transitions. [2021-11-13 01:29:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:30,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:30,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:30,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-13 01:29:30,310 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1101595287, now seen corresponding path program 1 times [2021-11-13 01:29:30,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:30,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010411029] [2021-11-13 01:29:30,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:30,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:30,419 INFO 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 01:29:30,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:30,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010411029] [2021-11-13 01:29:30,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010411029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:30,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:30,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:30,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595482628] [2021-11-13 01:29:30,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:30,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:30,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:30,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:30,422 INFO L87 Difference]: Start difference. First operand 845 states and 1080 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:32,256 INFO L93 Difference]: Finished difference Result 1501 states and 1919 transitions. [2021-11-13 01:29:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:29:32,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:32,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:32,259 INFO L225 Difference]: With dead ends: 1501 [2021-11-13 01:29:32,259 INFO L226 Difference]: Without dead ends: 1404 [2021-11-13 01:29:32,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:29:32,260 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 1734 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 844.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.82ms SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1044.39ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:32,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1734 Valid, 2389 Invalid, 2139 Unknown, 0 Unchecked, 8.82ms Time], IncrementalHoareTripleChecker [101 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1044.39ms Time] [2021-11-13 01:29:32,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-13 01:29:32,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 845. [2021-11-13 01:29:32,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.3110571081409477) internal successors, (1079), 844 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1079 transitions. [2021-11-13 01:29:32,487 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1079 transitions. Word has length 96 [2021-11-13 01:29:32,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:32,488 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1079 transitions. [2021-11-13 01:29:32,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1079 transitions. [2021-11-13 01:29:32,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:32,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:32,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:32,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-13 01:29:32,490 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:32,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:32,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1279554647, now seen corresponding path program 1 times [2021-11-13 01:29:32,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:32,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904626857] [2021-11-13 01:29:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:32,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:32,612 INFO 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 01:29:32,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:32,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904626857] [2021-11-13 01:29:32,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904626857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:32,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:32,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:32,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511039790] [2021-11-13 01:29:32,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:32,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:32,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:32,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:32,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:32,615 INFO L87 Difference]: Start difference. First operand 845 states and 1079 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:34,504 INFO L93 Difference]: Finished difference Result 1498 states and 1914 transitions. [2021-11-13 01:29:34,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:29:34,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:34,506 INFO L225 Difference]: With dead ends: 1498 [2021-11-13 01:29:34,506 INFO L226 Difference]: Without dead ends: 1404 [2021-11-13 01:29:34,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:29:34,507 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1773 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 863.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.51ms SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1069.90ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:34,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1773 Valid, 2314 Invalid, 2036 Unknown, 0 Unchecked, 11.51ms Time], IncrementalHoareTripleChecker [103 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1069.90ms Time] [2021-11-13 01:29:34,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-13 01:29:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 845. [2021-11-13 01:29:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.3098420413122722) internal successors, (1078), 844 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1078 transitions. [2021-11-13 01:29:34,714 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1078 transitions. Word has length 96 [2021-11-13 01:29:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:34,715 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1078 transitions. [2021-11-13 01:29:34,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1078 transitions. [2021-11-13 01:29:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:34,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:34,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:34,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-13 01:29:34,716 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:34,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1097118401, now seen corresponding path program 1 times [2021-11-13 01:29:34,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:34,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202547327] [2021-11-13 01:29:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:34,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:35,100 INFO 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 01:29:35,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:35,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202547327] [2021-11-13 01:29:35,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202547327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:35,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:35,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:29:35,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060226933] [2021-11-13 01:29:35,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:35,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:29:35,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:29:35,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:29:35,102 INFO L87 Difference]: Start difference. First operand 845 states and 1078 transitions. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:37,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:37,550 INFO L93 Difference]: Finished difference Result 2628 states and 3423 transitions. [2021-11-13 01:29:37,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 01:29:37,550 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:37,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:37,552 INFO L225 Difference]: With dead ends: 2628 [2021-11-13 01:29:37,553 INFO L226 Difference]: Without dead ends: 2492 [2021-11-13 01:29:37,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-13 01:29:37,554 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 3876 mSDsluCounter, 8690 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 574.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3876 SdHoareTripleChecker+Valid, 10062 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.55ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 697.31ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:37,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3876 Valid, 10062 Invalid, 1068 Unknown, 0 Unchecked, 18.55ms Time], IncrementalHoareTripleChecker [47 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 697.31ms Time] [2021-11-13 01:29:37,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2021-11-13 01:29:37,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 801. [2021-11-13 01:29:37,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.308974358974359) internal successors, (1021), 800 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1021 transitions. [2021-11-13 01:29:37,828 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1021 transitions. Word has length 96 [2021-11-13 01:29:37,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:37,829 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1021 transitions. [2021-11-13 01:29:37,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:37,829 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1021 transitions. [2021-11-13 01:29:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:37,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:37,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:37,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-13 01:29:37,830 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:37,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash 297856183, now seen corresponding path program 1 times [2021-11-13 01:29:37,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:37,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094596435] [2021-11-13 01:29:37,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:37,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:37,934 INFO 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 01:29:37,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:37,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094596435] [2021-11-13 01:29:37,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094596435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:37,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:37,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:37,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165002422] [2021-11-13 01:29:37,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:37,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:37,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:37,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:37,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:37,936 INFO L87 Difference]: Start difference. First operand 801 states and 1021 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:39,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:39,622 INFO L93 Difference]: Finished difference Result 1435 states and 1832 transitions. [2021-11-13 01:29:39,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:39,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:39,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:39,624 INFO L225 Difference]: With dead ends: 1435 [2021-11-13 01:29:39,624 INFO L226 Difference]: Without dead ends: 1338 [2021-11-13 01:29:39,625 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 01:29:39,625 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 2220 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 770.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.25ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 953.04ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:39,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2220 Valid, 2544 Invalid, 2066 Unknown, 0 Unchecked, 10.25ms Time], IncrementalHoareTripleChecker [105 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 953.04ms Time] [2021-11-13 01:29:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-13 01:29:39,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 801. [2021-11-13 01:29:39,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.3076923076923077) internal successors, (1020), 800 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:39,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1020 transitions. [2021-11-13 01:29:39,827 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1020 transitions. Word has length 96 [2021-11-13 01:29:39,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:39,828 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1020 transitions. [2021-11-13 01:29:39,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:39,828 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1020 transitions. [2021-11-13 01:29:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:39,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:39,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:39,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-13 01:29:39,829 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:39,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:39,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2084914011, now seen corresponding path program 1 times [2021-11-13 01:29:39,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:39,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868129829] [2021-11-13 01:29:39,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:39,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:39,928 INFO 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 01:29:39,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:39,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868129829] [2021-11-13 01:29:39,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868129829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:39,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:39,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:39,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347839068] [2021-11-13 01:29:39,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:39,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:39,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:39,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:39,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:39,931 INFO L87 Difference]: Start difference. First operand 801 states and 1020 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:41,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:41,778 INFO L93 Difference]: Finished difference Result 1491 states and 1913 transitions. [2021-11-13 01:29:41,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:41,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:41,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:41,780 INFO L225 Difference]: With dead ends: 1491 [2021-11-13 01:29:41,780 INFO L226 Difference]: Without dead ends: 1382 [2021-11-13 01:29:41,780 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 01:29:41,781 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 1525 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 850.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.32ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1044.71ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:41,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 2635 Invalid, 2005 Unknown, 0 Unchecked, 10.32ms Time], IncrementalHoareTripleChecker [41 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 1044.71ms Time] [2021-11-13 01:29:41,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-11-13 01:29:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 801. [2021-11-13 01:29:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.3064102564102564) internal successors, (1019), 800 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1019 transitions. [2021-11-13 01:29:42,029 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1019 transitions. Word has length 96 [2021-11-13 01:29:42,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:42,030 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1019 transitions. [2021-11-13 01:29:42,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1019 transitions. [2021-11-13 01:29:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:42,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:42,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:42,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-13 01:29:42,031 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:42,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:42,032 INFO L85 PathProgramCache]: Analyzing trace with hash 807960068, now seen corresponding path program 1 times [2021-11-13 01:29:42,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:42,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905607822] [2021-11-13 01:29:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:42,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:42,159 INFO 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 01:29:42,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:42,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905607822] [2021-11-13 01:29:42,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905607822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:42,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:42,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:42,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599268056] [2021-11-13 01:29:42,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:42,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:42,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:42,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:42,162 INFO L87 Difference]: Start difference. First operand 801 states and 1019 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:44,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:44,244 INFO L93 Difference]: Finished difference Result 1432 states and 1827 transitions. [2021-11-13 01:29:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:44,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:44,246 INFO L225 Difference]: With dead ends: 1432 [2021-11-13 01:29:44,246 INFO L226 Difference]: Without dead ends: 1338 [2021-11-13 01:29:44,246 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 01:29:44,247 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 2218 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 970.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.39ms SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1201.53ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:44,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2218 Valid, 2654 Invalid, 2162 Unknown, 0 Unchecked, 10.39ms Time], IncrementalHoareTripleChecker [104 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 1201.53ms Time] [2021-11-13 01:29:44,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-13 01:29:44,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 801. [2021-11-13 01:29:44,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.3051282051282052) internal successors, (1018), 800 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1018 transitions. [2021-11-13 01:29:44,487 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1018 transitions. Word has length 96 [2021-11-13 01:29:44,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:44,487 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1018 transitions. [2021-11-13 01:29:44,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:44,488 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1018 transitions. [2021-11-13 01:29:44,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:44,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:44,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:44,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-13 01:29:44,489 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:44,490 INFO L85 PathProgramCache]: Analyzing trace with hash -457280392, now seen corresponding path program 1 times [2021-11-13 01:29:44,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:44,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026400659] [2021-11-13 01:29:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:44,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:44,598 INFO 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 01:29:44,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:44,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026400659] [2021-11-13 01:29:44,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026400659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:44,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:44,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:44,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595943281] [2021-11-13 01:29:44,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:44,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:44,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:44,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:44,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:44,601 INFO L87 Difference]: Start difference. First operand 801 states and 1018 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:46,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:46,543 INFO L93 Difference]: Finished difference Result 1435 states and 1829 transitions. [2021-11-13 01:29:46,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:29:46,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:46,545 INFO L225 Difference]: With dead ends: 1435 [2021-11-13 01:29:46,545 INFO L226 Difference]: Without dead ends: 1338 [2021-11-13 01:29:46,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:29:46,546 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 1623 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 838.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.94ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1035.31ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:46,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 2182 Invalid, 1871 Unknown, 0 Unchecked, 10.94ms Time], IncrementalHoareTripleChecker [90 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1035.31ms Time] [2021-11-13 01:29:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-13 01:29:46,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 801. [2021-11-13 01:29:46,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.3038461538461539) internal successors, (1017), 800 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1017 transitions. [2021-11-13 01:29:46,766 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1017 transitions. Word has length 96 [2021-11-13 01:29:46,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:46,767 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1017 transitions. [2021-11-13 01:29:46,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1017 transitions. [2021-11-13 01:29:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:46,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:46,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:46,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-13 01:29:46,769 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:46,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:46,769 INFO L85 PathProgramCache]: Analyzing trace with hash -919090496, now seen corresponding path program 1 times [2021-11-13 01:29:46,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:46,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577432603] [2021-11-13 01:29:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:46,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:46,868 INFO 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 01:29:46,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:46,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577432603] [2021-11-13 01:29:46,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577432603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:46,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:46,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:46,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061574212] [2021-11-13 01:29:46,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:46,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:46,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:46,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:46,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:46,871 INFO L87 Difference]: Start difference. First operand 801 states and 1017 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:48,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:48,605 INFO L93 Difference]: Finished difference Result 1430 states and 1822 transitions. [2021-11-13 01:29:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:48,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:48,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:48,607 INFO L225 Difference]: With dead ends: 1430 [2021-11-13 01:29:48,607 INFO L226 Difference]: Without dead ends: 1338 [2021-11-13 01:29:48,607 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 01:29:48,608 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 2211 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 775.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.77ms SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 960.48ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:48,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2211 Valid, 2702 Invalid, 2153 Unknown, 0 Unchecked, 9.77ms Time], IncrementalHoareTripleChecker [104 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 960.48ms Time] [2021-11-13 01:29:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-13 01:29:48,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 801. [2021-11-13 01:29:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.3025641025641026) internal successors, (1016), 800 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:48,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1016 transitions. [2021-11-13 01:29:48,826 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1016 transitions. Word has length 96 [2021-11-13 01:29:48,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:48,827 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1016 transitions. [2021-11-13 01:29:48,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:48,827 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1016 transitions. [2021-11-13 01:29:48,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:48,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:48,828 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] [2021-11-13 01:29:48,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-13 01:29:48,828 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:48,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:48,829 INFO L85 PathProgramCache]: Analyzing trace with hash -599186684, now seen corresponding path program 1 times [2021-11-13 01:29:48,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:48,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346079659] [2021-11-13 01:29:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:48,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:48,952 INFO 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 01:29:48,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:48,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346079659] [2021-11-13 01:29:48,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346079659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:48,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:48,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:48,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710728477] [2021-11-13 01:29:48,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:48,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:48,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:48,955 INFO L87 Difference]: Start difference. First operand 801 states and 1016 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:50,673 INFO L93 Difference]: Finished difference Result 1432 states and 1823 transitions. [2021-11-13 01:29:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:29:50,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:50,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:50,674 INFO L225 Difference]: With dead ends: 1432 [2021-11-13 01:29:50,674 INFO L226 Difference]: Without dead ends: 1338 [2021-11-13 01:29:50,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:29:50,675 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 2201 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 739.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.33ms SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 916.72ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:50,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2201 Valid, 2296 Invalid, 2009 Unknown, 0 Unchecked, 10.33ms Time], IncrementalHoareTripleChecker [132 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 916.72ms Time] [2021-11-13 01:29:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-13 01:29:50,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 801. [2021-11-13 01:29:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.3012820512820513) internal successors, (1015), 800 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1015 transitions. [2021-11-13 01:29:50,887 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1015 transitions. Word has length 96 [2021-11-13 01:29:50,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:50,887 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1015 transitions. [2021-11-13 01:29:50,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:50,888 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1015 transitions. [2021-11-13 01:29:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:50,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:50,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:50,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-13 01:29:50,890 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:50,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1068299218, now seen corresponding path program 1 times [2021-11-13 01:29:50,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:50,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309118718] [2021-11-13 01:29:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:50,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:50,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:50,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309118718] [2021-11-13 01:29:50,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309118718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:50,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:50,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:50,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262248] [2021-11-13 01:29:50,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:50,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:50,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:50,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:50,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:50,973 INFO L87 Difference]: Start difference. First operand 801 states and 1015 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:52,502 INFO L93 Difference]: Finished difference Result 1430 states and 1819 transitions. [2021-11-13 01:29:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:29:52,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:52,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:52,504 INFO L225 Difference]: With dead ends: 1430 [2021-11-13 01:29:52,504 INFO L226 Difference]: Without dead ends: 1338 [2021-11-13 01:29:52,504 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 01:29:52,505 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 1614 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 648.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.77ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 799.82ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:52,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 2183 Invalid, 1859 Unknown, 0 Unchecked, 6.77ms Time], IncrementalHoareTripleChecker [90 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 799.82ms Time] [2021-11-13 01:29:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-13 01:29:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 801. [2021-11-13 01:29:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.3) internal successors, (1014), 800 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1014 transitions. [2021-11-13 01:29:52,790 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1014 transitions. Word has length 96 [2021-11-13 01:29:52,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:52,791 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1014 transitions. [2021-11-13 01:29:52,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:52,791 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1014 transitions. [2021-11-13 01:29:52,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:52,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:52,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:52,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-13 01:29:52,794 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:52,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:52,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1873206628, now seen corresponding path program 1 times [2021-11-13 01:29:52,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:52,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49002645] [2021-11-13 01:29:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:52,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:52,927 INFO 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 01:29:52,927 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:52,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49002645] [2021-11-13 01:29:52,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49002645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:52,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:52,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:52,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153568623] [2021-11-13 01:29:52,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:52,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:52,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:52,930 INFO L87 Difference]: Start difference. First operand 801 states and 1014 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:54,920 INFO L93 Difference]: Finished difference Result 1432 states and 1819 transitions. [2021-11-13 01:29:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:29:54,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:54,922 INFO L225 Difference]: With dead ends: 1432 [2021-11-13 01:29:54,922 INFO L226 Difference]: Without dead ends: 1338 [2021-11-13 01:29:54,922 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 01:29:54,923 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 2202 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 2019 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 883.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2202 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.81ms SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1090.62ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:54,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2202 Valid, 2671 Invalid, 2123 Unknown, 0 Unchecked, 9.81ms Time], IncrementalHoareTripleChecker [104 Valid, 2019 Invalid, 0 Unknown, 0 Unchecked, 1090.62ms Time] [2021-11-13 01:29:54,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-13 01:29:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 801. [2021-11-13 01:29:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.2987179487179488) internal successors, (1013), 800 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1013 transitions. [2021-11-13 01:29:55,159 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1013 transitions. Word has length 96 [2021-11-13 01:29:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:55,159 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1013 transitions. [2021-11-13 01:29:55,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1013 transitions. [2021-11-13 01:29:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:55,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:55,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:55,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-13 01:29:55,161 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:55,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:55,161 INFO L85 PathProgramCache]: Analyzing trace with hash 608299816, now seen corresponding path program 1 times [2021-11-13 01:29:55,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:55,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775654255] [2021-11-13 01:29:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:55,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:55,263 INFO 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 01:29:55,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:55,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775654255] [2021-11-13 01:29:55,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775654255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:55,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:55,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:55,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486768757] [2021-11-13 01:29:55,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:55,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:55,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:55,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:55,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:55,266 INFO L87 Difference]: Start difference. First operand 801 states and 1013 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:57,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:57,072 INFO L93 Difference]: Finished difference Result 1343 states and 1696 transitions. [2021-11-13 01:29:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:29:57,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:57,075 INFO L225 Difference]: With dead ends: 1343 [2021-11-13 01:29:57,075 INFO L226 Difference]: Without dead ends: 1338 [2021-11-13 01:29:57,075 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 01:29:57,076 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 2212 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 758.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.07ms SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 953.69ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:57,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2212 Valid, 2258 Invalid, 1983 Unknown, 0 Unchecked, 10.07ms Time], IncrementalHoareTripleChecker [132 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 953.69ms Time] [2021-11-13 01:29:57,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-13 01:29:57,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 801. [2021-11-13 01:29:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.2974358974358975) internal successors, (1012), 800 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:57,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1012 transitions. [2021-11-13 01:29:57,338 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1012 transitions. Word has length 96 [2021-11-13 01:29:57,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:57,338 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1012 transitions. [2021-11-13 01:29:57,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:57,339 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1012 transitions. [2021-11-13 01:29:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:57,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:57,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:57,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-13 01:29:57,340 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:57,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1773066592, now seen corresponding path program 1 times [2021-11-13 01:29:57,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:57,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418454092] [2021-11-13 01:29:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:57,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:29:57,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:57,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418454092] [2021-11-13 01:29:57,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418454092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:57,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:57,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:57,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594995414] [2021-11-13 01:29:57,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:57,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:57,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:57,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:57,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:57,443 INFO L87 Difference]: Start difference. First operand 801 states and 1012 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:59,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:59,157 INFO L93 Difference]: Finished difference Result 1432 states and 1816 transitions. [2021-11-13 01:29:59,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:29:59,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:29:59,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:59,159 INFO L225 Difference]: With dead ends: 1432 [2021-11-13 01:29:59,159 INFO L226 Difference]: Without dead ends: 1338 [2021-11-13 01:29:59,159 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 01:29:59,160 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 2294 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 689.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2294 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.30ms SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 858.74ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:59,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2294 Valid, 2190 Invalid, 1872 Unknown, 0 Unchecked, 10.30ms Time], IncrementalHoareTripleChecker [135 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 858.74ms Time] [2021-11-13 01:29:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-13 01:29:59,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 801. [2021-11-13 01:29:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.2961538461538462) internal successors, (1011), 800 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1011 transitions. [2021-11-13 01:29:59,409 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1011 transitions. Word has length 96 [2021-11-13 01:29:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:59,410 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1011 transitions. [2021-11-13 01:29:59,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:29:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1011 transitions. [2021-11-13 01:29:59,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:29:59,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:59,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:59,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-13 01:29:59,411 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:29:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:59,412 INFO L85 PathProgramCache]: Analyzing trace with hash 865275896, now seen corresponding path program 1 times [2021-11-13 01:29:59,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:29:59,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752710378] [2021-11-13 01:29:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:59,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:29:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:59,518 INFO 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 01:29:59,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:29:59,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752710378] [2021-11-13 01:29:59,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752710378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:59,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:59,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:29:59,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107797100] [2021-11-13 01:29:59,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:59,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:29:59,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:29:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:29:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:29:59,520 INFO L87 Difference]: Start difference. First operand 801 states and 1011 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:01,213 INFO L93 Difference]: Finished difference Result 1430 states and 1812 transitions. [2021-11-13 01:30:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:30:01,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-13 01:30:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:01,214 INFO L225 Difference]: With dead ends: 1430 [2021-11-13 01:30:01,215 INFO L226 Difference]: Without dead ends: 1338 [2021-11-13 01:30:01,215 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 01:30:01,215 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 2194 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 727.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.60ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 902.24ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:01,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 2572 Invalid, 2015 Unknown, 0 Unchecked, 9.60ms Time], IncrementalHoareTripleChecker [105 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 902.24ms Time] [2021-11-13 01:30:01,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-13 01:30:01,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 801. [2021-11-13 01:30:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 780 states have (on average 1.294871794871795) internal successors, (1010), 800 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:01,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1010 transitions. [2021-11-13 01:30:01,443 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1010 transitions. Word has length 96 [2021-11-13 01:30:01,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:01,444 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1010 transitions. [2021-11-13 01:30:01,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:01,444 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1010 transitions. [2021-11-13 01:30:01,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 01:30:01,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:01,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:01,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-13 01:30:01,445 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:01,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:01,445 INFO L85 PathProgramCache]: Analyzing trace with hash -308092620, now seen corresponding path program 1 times [2021-11-13 01:30:01,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:01,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977083859] [2021-11-13 01:30:01,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:01,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:01,533 INFO 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 01:30:01,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:01,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977083859] [2021-11-13 01:30:01,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977083859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:01,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:01,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:30:01,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804618479] [2021-11-13 01:30:01,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:01,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:30:01,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:01,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:30:01,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:30:01,535 INFO L87 Difference]: Start difference. First operand 801 states and 1010 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:03,132 INFO L93 Difference]: Finished difference Result 1580 states and 2020 transitions. [2021-11-13 01:30:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:30:03,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-13 01:30:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:03,134 INFO L225 Difference]: With dead ends: 1580 [2021-11-13 01:30:03,134 INFO L226 Difference]: Without dead ends: 1424 [2021-11-13 01:30:03,134 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 01:30:03,135 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 2318 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 686.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.33ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 846.30ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:03,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2318 Valid, 2576 Invalid, 1986 Unknown, 0 Unchecked, 8.33ms Time], IncrementalHoareTripleChecker [45 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 846.30ms Time] [2021-11-13 01:30:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-11-13 01:30:03,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 793. [2021-11-13 01:30:03,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 772 states have (on average 1.2953367875647668) internal successors, (1000), 792 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1000 transitions. [2021-11-13 01:30:03,376 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1000 transitions. Word has length 97 [2021-11-13 01:30:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:03,376 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 1000 transitions. [2021-11-13 01:30:03,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:03,377 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1000 transitions. [2021-11-13 01:30:03,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-13 01:30:03,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:03,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:03,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-13 01:30:03,379 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:03,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:03,379 INFO L85 PathProgramCache]: Analyzing trace with hash 236768823, now seen corresponding path program 1 times [2021-11-13 01:30:03,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:03,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560500556] [2021-11-13 01:30:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:03,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:03,740 INFO 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 01:30:03,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:03,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560500556] [2021-11-13 01:30:03,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560500556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:03,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:03,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:30:03,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477329465] [2021-11-13 01:30:03,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:03,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:30:03,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:03,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:30:03,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:30:03,742 INFO L87 Difference]: Start difference. First operand 793 states and 1000 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:06,927 INFO L93 Difference]: Finished difference Result 2530 states and 3247 transitions. [2021-11-13 01:30:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 01:30:06,927 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-13 01:30:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:06,929 INFO L225 Difference]: With dead ends: 2530 [2021-11-13 01:30:06,930 INFO L226 Difference]: Without dead ends: 2392 [2021-11-13 01:30:06,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-11-13 01:30:06,931 INFO L933 BasicCegarLoop]: 1543 mSDtfsCounter, 3475 mSDsluCounter, 9372 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 786.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 10687 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.97ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 945.44ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:06,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3475 Valid, 10687 Invalid, 1433 Unknown, 0 Unchecked, 19.97ms Time], IncrementalHoareTripleChecker [65 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 945.44ms Time] [2021-11-13 01:30:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2021-11-13 01:30:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 747. [2021-11-13 01:30:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 727 states have (on average 1.2916093535075652) internal successors, (939), 746 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 939 transitions. [2021-11-13 01:30:07,233 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 939 transitions. Word has length 98 [2021-11-13 01:30:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:07,233 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 939 transitions. [2021-11-13 01:30:07,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 939 transitions. [2021-11-13 01:30:07,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-13 01:30:07,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:07,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:07,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-13 01:30:07,236 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:07,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1830728152, now seen corresponding path program 1 times [2021-11-13 01:30:07,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:07,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390434420] [2021-11-13 01:30:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:07,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:07,525 INFO 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 01:30:07,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:07,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390434420] [2021-11-13 01:30:07,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390434420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:07,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:07,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:30:07,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794863189] [2021-11-13 01:30:07,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:07,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:30:07,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:07,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:30:07,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:30:07,528 INFO L87 Difference]: Start difference. First operand 747 states and 939 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:10,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:10,372 INFO L93 Difference]: Finished difference Result 2426 states and 3129 transitions. [2021-11-13 01:30:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 01:30:10,372 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-13 01:30:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:10,374 INFO L225 Difference]: With dead ends: 2426 [2021-11-13 01:30:10,374 INFO L226 Difference]: Without dead ends: 2268 [2021-11-13 01:30:10,375 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 01:30:10,375 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 3368 mSDsluCounter, 10601 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 637.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3368 SdHoareTripleChecker+Valid, 11843 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.33ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 771.32ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:10,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3368 Valid, 11843 Invalid, 1323 Unknown, 0 Unchecked, 20.33ms Time], IncrementalHoareTripleChecker [46 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 771.32ms Time] [2021-11-13 01:30:10,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2021-11-13 01:30:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 681. [2021-11-13 01:30:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 664 states have (on average 1.286144578313253) internal successors, (854), 680 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 854 transitions. [2021-11-13 01:30:10,624 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 854 transitions. Word has length 98 [2021-11-13 01:30:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:10,624 INFO L470 AbstractCegarLoop]: Abstraction has 681 states and 854 transitions. [2021-11-13 01:30:10,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 854 transitions. [2021-11-13 01:30:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-13 01:30:10,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:10,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:10,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-13 01:30:10,625 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:10,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:10,626 INFO L85 PathProgramCache]: Analyzing trace with hash 843370531, now seen corresponding path program 1 times [2021-11-13 01:30:10,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:10,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182216958] [2021-11-13 01:30:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:10,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:10,929 INFO 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 01:30:10,929 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:10,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182216958] [2021-11-13 01:30:10,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182216958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:10,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:10,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:30:10,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939319046] [2021-11-13 01:30:10,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:10,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:30:10,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:10,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:30:10,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:30:10,931 INFO L87 Difference]: Start difference. First operand 681 states and 854 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:12,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:12,686 INFO L93 Difference]: Finished difference Result 1076 states and 1345 transitions. [2021-11-13 01:30:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:30:12,687 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-13 01:30:12,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:12,688 INFO L225 Difference]: With dead ends: 1076 [2021-11-13 01:30:12,688 INFO L226 Difference]: Without dead ends: 978 [2021-11-13 01:30:12,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:30:12,692 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 2396 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 798.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.44ms SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 955.70ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:12,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2396 Valid, 3448 Invalid, 1898 Unknown, 0 Unchecked, 10.44ms Time], IncrementalHoareTripleChecker [135 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 955.70ms Time] [2021-11-13 01:30:12,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-11-13 01:30:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 671. [2021-11-13 01:30:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 655 states have (on average 1.2809160305343512) internal successors, (839), 670 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 839 transitions. [2021-11-13 01:30:12,932 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 839 transitions. Word has length 98 [2021-11-13 01:30:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:12,932 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 839 transitions. [2021-11-13 01:30:12,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 839 transitions. [2021-11-13 01:30:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-13 01:30:12,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:12,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:12,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-13 01:30:12,934 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:12,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:12,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1087150783, now seen corresponding path program 1 times [2021-11-13 01:30:12,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:12,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265422645] [2021-11-13 01:30:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:12,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:13,245 INFO 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 01:30:13,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:13,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265422645] [2021-11-13 01:30:13,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265422645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:13,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:13,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:30:13,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598372703] [2021-11-13 01:30:13,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:13,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:30:13,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:30:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:30:13,246 INFO L87 Difference]: Start difference. First operand 671 states and 839 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:16,156 INFO L93 Difference]: Finished difference Result 2266 states and 2899 transitions. [2021-11-13 01:30:16,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 01:30:16,156 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-13 01:30:16,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:16,158 INFO L225 Difference]: With dead ends: 2266 [2021-11-13 01:30:16,158 INFO L226 Difference]: Without dead ends: 2120 [2021-11-13 01:30:16,160 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 01:30:16,161 INFO L933 BasicCegarLoop]: 1419 mSDtfsCounter, 3036 mSDsluCounter, 8469 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 617.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3036 SdHoareTripleChecker+Valid, 9647 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.07ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 743.02ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:16,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3036 Valid, 9647 Invalid, 1277 Unknown, 0 Unchecked, 25.07ms Time], IncrementalHoareTripleChecker [62 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 743.02ms Time] [2021-11-13 01:30:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2021-11-13 01:30:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 617. [2021-11-13 01:30:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 604 states have (on average 1.271523178807947) internal successors, (768), 616 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 768 transitions. [2021-11-13 01:30:16,484 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 768 transitions. Word has length 98 [2021-11-13 01:30:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:16,484 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 768 transitions. [2021-11-13 01:30:16,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 768 transitions. [2021-11-13 01:30:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-13 01:30:16,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:16,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:16,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-13 01:30:16,487 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:16,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash -534371604, now seen corresponding path program 1 times [2021-11-13 01:30:16,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:16,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885719939] [2021-11-13 01:30:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:16,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:16,888 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:16,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885719939] [2021-11-13 01:30:16,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885719939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:16,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:16,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:30:16,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487933700] [2021-11-13 01:30:16,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:16,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:30:16,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:16,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:30:16,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:30:16,890 INFO L87 Difference]: Start difference. First operand 617 states and 768 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:19,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:19,292 INFO L93 Difference]: Finished difference Result 1232 states and 1572 transitions. [2021-11-13 01:30:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 01:30:19,292 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-13 01:30:19,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:19,293 INFO L225 Difference]: With dead ends: 1232 [2021-11-13 01:30:19,293 INFO L226 Difference]: Without dead ends: 942 [2021-11-13 01:30:19,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:30:19,295 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 2402 mSDsluCounter, 4511 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 485.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 5067 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.15ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 584.57ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:19,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2402 Valid, 5067 Invalid, 741 Unknown, 0 Unchecked, 14.15ms Time], IncrementalHoareTripleChecker [27 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 584.57ms Time] [2021-11-13 01:30:19,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-11-13 01:30:19,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 419. [2021-11-13 01:30:19,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 411 states have (on average 1.2506082725060828) internal successors, (514), 418 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:19,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 514 transitions. [2021-11-13 01:30:19,564 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 514 transitions. Word has length 98 [2021-11-13 01:30:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:19,565 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 514 transitions. [2021-11-13 01:30:19,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:19,565 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 514 transitions. [2021-11-13 01:30:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-13 01:30:19,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:19,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:19,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-13 01:30:19,567 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:19,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:19,568 INFO L85 PathProgramCache]: Analyzing trace with hash 913480628, now seen corresponding path program 1 times [2021-11-13 01:30:19,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:19,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951887304] [2021-11-13 01:30:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:19,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:19,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:19,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951887304] [2021-11-13 01:30:19,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951887304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:19,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:19,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:30:19,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624436045] [2021-11-13 01:30:19,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:19,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:30:19,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:19,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:30:19,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:30:19,921 INFO L87 Difference]: Start difference. First operand 419 states and 514 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:21,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:21,383 INFO L93 Difference]: Finished difference Result 716 states and 889 transitions. [2021-11-13 01:30:21,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:30:21,384 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-13 01:30:21,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:21,385 INFO L225 Difference]: With dead ends: 716 [2021-11-13 01:30:21,385 INFO L226 Difference]: Without dead ends: 620 [2021-11-13 01:30:21,385 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 01:30:21,386 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 2147 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 448.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.55ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 541.05ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:21,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2147 Valid, 1520 Invalid, 832 Unknown, 0 Unchecked, 7.55ms Time], IncrementalHoareTripleChecker [102 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 541.05ms Time] [2021-11-13 01:30:21,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-11-13 01:30:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 415. [2021-11-13 01:30:21,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 408 states have (on average 1.2475490196078431) internal successors, (509), 414 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 509 transitions. [2021-11-13 01:30:21,644 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 509 transitions. Word has length 98 [2021-11-13 01:30:21,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:21,644 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 509 transitions. [2021-11-13 01:30:21,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 509 transitions. [2021-11-13 01:30:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-13 01:30:21,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:21,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:21,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-13 01:30:21,646 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash -867036520, now seen corresponding path program 1 times [2021-11-13 01:30:21,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:21,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645994182] [2021-11-13 01:30:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:21,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:22,117 INFO 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 01:30:22,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:22,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645994182] [2021-11-13 01:30:22,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645994182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:22,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:22,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-13 01:30:22,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283096115] [2021-11-13 01:30:22,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:22,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:30:22,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:22,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:30:22,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:30:22,120 INFO L87 Difference]: Start difference. First operand 415 states and 509 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:23,789 INFO L93 Difference]: Finished difference Result 738 states and 923 transitions. [2021-11-13 01:30:23,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 01:30:23,790 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-13 01:30:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:23,791 INFO L225 Difference]: With dead ends: 738 [2021-11-13 01:30:23,791 INFO L226 Difference]: Without dead ends: 490 [2021-11-13 01:30:23,791 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 01:30:23,792 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 1615 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 469.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.91ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 562.03ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:23,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 2943 Invalid, 830 Unknown, 0 Unchecked, 9.91ms Time], IncrementalHoareTripleChecker [50 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 562.03ms Time] [2021-11-13 01:30:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-13 01:30:24,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 326. [2021-11-13 01:30:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 320 states have (on average 1.225) internal successors, (392), 325 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 392 transitions. [2021-11-13 01:30:24,026 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 392 transitions. Word has length 98 [2021-11-13 01:30:24,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:24,026 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 392 transitions. [2021-11-13 01:30:24,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 392 transitions. [2021-11-13 01:30:24,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 01:30:24,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:24,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:24,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-13 01:30:24,028 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:24,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:24,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1090193566, now seen corresponding path program 1 times [2021-11-13 01:30:24,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:24,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182762818] [2021-11-13 01:30:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:24,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:24,143 INFO 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 01:30:24,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:24,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182762818] [2021-11-13 01:30:24,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182762818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:24,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:24,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:30:24,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777018730] [2021-11-13 01:30:24,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:24,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:30:24,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:24,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:30:24,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:30:24,146 INFO L87 Difference]: Start difference. First operand 326 states and 392 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:25,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:25,018 INFO L93 Difference]: Finished difference Result 488 states and 593 transitions. [2021-11-13 01:30:25,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:30:25,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-13 01:30:25,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:25,020 INFO L225 Difference]: With dead ends: 488 [2021-11-13 01:30:25,020 INFO L226 Difference]: Without dead ends: 481 [2021-11-13 01:30:25,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:30:25,020 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 865 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 294.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.32ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 364.97ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:25,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 854 Invalid, 677 Unknown, 0 Unchecked, 4.32ms Time], IncrementalHoareTripleChecker [30 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 364.97ms Time] [2021-11-13 01:30:25,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-11-13 01:30:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 326. [2021-11-13 01:30:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 320 states have (on average 1.221875) internal successors, (391), 325 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 391 transitions. [2021-11-13 01:30:25,212 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 391 transitions. Word has length 99 [2021-11-13 01:30:25,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:25,213 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 391 transitions. [2021-11-13 01:30:25,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:25,213 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 391 transitions. [2021-11-13 01:30:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 01:30:25,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:25,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:25,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-13 01:30:25,214 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:25,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:25,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1504976506, now seen corresponding path program 1 times [2021-11-13 01:30:25,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:25,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572031850] [2021-11-13 01:30:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:25,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:25,319 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 01:30:25,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:25,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572031850] [2021-11-13 01:30:25,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572031850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:25,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:25,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:30:25,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087657335] [2021-11-13 01:30:25,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:25,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:30:25,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:25,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:30:25,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:30:25,322 INFO L87 Difference]: Start difference. First operand 326 states and 391 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:26,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:26,688 INFO L93 Difference]: Finished difference Result 819 states and 1033 transitions. [2021-11-13 01:30:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:30:26,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-13 01:30:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:26,689 INFO L225 Difference]: With dead ends: 819 [2021-11-13 01:30:26,689 INFO L226 Difference]: Without dead ends: 697 [2021-11-13 01:30:26,690 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 01:30:26,690 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 697 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 425.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.14ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 529.14ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:26,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 1340 Invalid, 1129 Unknown, 0 Unchecked, 5.14ms Time], IncrementalHoareTripleChecker [13 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 529.14ms Time] [2021-11-13 01:30:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-11-13 01:30:26,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 326. [2021-11-13 01:30:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 320 states have (on average 1.215625) internal successors, (389), 325 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 389 transitions. [2021-11-13 01:30:26,880 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 389 transitions. Word has length 99 [2021-11-13 01:30:26,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:26,880 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 389 transitions. [2021-11-13 01:30:26,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:26,880 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 389 transitions. [2021-11-13 01:30:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 01:30:26,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:26,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:26,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-13 01:30:26,881 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash -224858511, now seen corresponding path program 1 times [2021-11-13 01:30:26,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:26,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055417515] [2021-11-13 01:30:26,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:26,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:27,215 INFO 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 01:30:27,216 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:27,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055417515] [2021-11-13 01:30:27,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055417515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:27,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:27,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:30:27,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431971106] [2021-11-13 01:30:27,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:27,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:30:27,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:27,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:30:27,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:30:27,217 INFO L87 Difference]: Start difference. First operand 326 states and 389 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:28,759 INFO L93 Difference]: Finished difference Result 875 states and 1092 transitions. [2021-11-13 01:30:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 01:30:28,760 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-13 01:30:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:28,761 INFO L225 Difference]: With dead ends: 875 [2021-11-13 01:30:28,761 INFO L226 Difference]: Without dead ends: 772 [2021-11-13 01:30:28,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-13 01:30:28,762 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1178 mSDsluCounter, 3062 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 332.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.75ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 393.09ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:28,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 3354 Invalid, 670 Unknown, 0 Unchecked, 5.75ms Time], IncrementalHoareTripleChecker [30 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 393.09ms Time] [2021-11-13 01:30:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-13 01:30:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 315. [2021-11-13 01:30:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 310 states have (on average 1.2096774193548387) internal successors, (375), 314 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 375 transitions. [2021-11-13 01:30:29,004 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 375 transitions. Word has length 99 [2021-11-13 01:30:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:29,004 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 375 transitions. [2021-11-13 01:30:29,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:29,005 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 375 transitions. [2021-11-13 01:30:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 01:30:29,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:29,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:29,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-13 01:30:29,006 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:29,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:29,006 INFO L85 PathProgramCache]: Analyzing trace with hash -672554448, now seen corresponding path program 1 times [2021-11-13 01:30:29,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:29,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779776740] [2021-11-13 01:30:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:29,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:29,300 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 01:30:29,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:29,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779776740] [2021-11-13 01:30:29,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779776740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:29,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:29,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 01:30:29,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295356865] [2021-11-13 01:30:29,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:29,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:30:29,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:29,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:30:29,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:30:29,301 INFO L87 Difference]: Start difference. First operand 315 states and 375 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:30,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:30,294 INFO L93 Difference]: Finished difference Result 641 states and 794 transitions. [2021-11-13 01:30:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:30:30,294 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-13 01:30:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:30,295 INFO L225 Difference]: With dead ends: 641 [2021-11-13 01:30:30,295 INFO L226 Difference]: Without dead ends: 489 [2021-11-13 01:30:30,295 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 01:30:30,299 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 1107 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.33ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 179.54ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:30,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 1145 Invalid, 250 Unknown, 0 Unchecked, 3.33ms Time], IncrementalHoareTripleChecker [18 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 179.54ms Time] [2021-11-13 01:30:30,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-13 01:30:30,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 255. [2021-11-13 01:30:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 252 states have (on average 1.2023809523809523) internal successors, (303), 254 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 303 transitions. [2021-11-13 01:30:30,462 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 303 transitions. Word has length 99 [2021-11-13 01:30:30,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:30,462 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 303 transitions. [2021-11-13 01:30:30,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 303 transitions. [2021-11-13 01:30:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 01:30:30,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:30,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:30,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-13 01:30:30,463 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:30,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1003979678, now seen corresponding path program 1 times [2021-11-13 01:30:30,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:30,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030687926] [2021-11-13 01:30:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:30,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:30,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:30,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030687926] [2021-11-13 01:30:30,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030687926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:30,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:30,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:30:30,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916641188] [2021-11-13 01:30:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:30,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:30:30,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:30:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:30:30,758 INFO L87 Difference]: Start difference. First operand 255 states and 303 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:31,918 INFO L93 Difference]: Finished difference Result 585 states and 735 transitions. [2021-11-13 01:30:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:30:31,918 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-13 01:30:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:31,919 INFO L225 Difference]: With dead ends: 585 [2021-11-13 01:30:31,919 INFO L226 Difference]: Without dead ends: 579 [2021-11-13 01:30:31,919 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 01:30:31,920 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 973 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.14ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.70ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:31,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 1557 Invalid, 402 Unknown, 0 Unchecked, 3.14ms Time], IncrementalHoareTripleChecker [19 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 228.70ms Time] [2021-11-13 01:30:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-11-13 01:30:32,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 249. [2021-11-13 01:30:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.1983805668016194) internal successors, (296), 248 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 296 transitions. [2021-11-13 01:30:32,085 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 296 transitions. Word has length 101 [2021-11-13 01:30:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:32,085 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 296 transitions. [2021-11-13 01:30:32,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 296 transitions. [2021-11-13 01:30:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 01:30:32,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:32,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:32,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-13 01:30:32,086 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:32,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1120059438, now seen corresponding path program 1 times [2021-11-13 01:30:32,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:32,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764517818] [2021-11-13 01:30:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:32,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:33,374 INFO 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 01:30:33,374 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:33,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764517818] [2021-11-13 01:30:33,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764517818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:33,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:33,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-13 01:30:33,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154896498] [2021-11-13 01:30:33,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:33,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 01:30:33,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:33,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 01:30:33,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2021-11-13 01:30:33,376 INFO L87 Difference]: Start difference. First operand 249 states and 296 transitions. Second operand has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:36,523 INFO L93 Difference]: Finished difference Result 299 states and 349 transitions. [2021-11-13 01:30:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-13 01:30:36,524 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-13 01:30:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:36,524 INFO L225 Difference]: With dead ends: 299 [2021-11-13 01:30:36,524 INFO L226 Difference]: Without dead ends: 291 [2021-11-13 01:30:36,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=462, Invalid=2844, Unknown=0, NotChecked=0, Total=3306 [2021-11-13 01:30:36,525 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 707 mSDsluCounter, 2587 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1055.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.35ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1215.95ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:36,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 2654 Invalid, 2005 Unknown, 0 Unchecked, 9.35ms Time], IncrementalHoareTripleChecker [46 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1215.95ms Time] [2021-11-13 01:30:36,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-13 01:30:36,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 268. [2021-11-13 01:30:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 266 states have (on average 1.199248120300752) internal successors, (319), 267 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:36,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 319 transitions. [2021-11-13 01:30:36,709 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 319 transitions. Word has length 101 [2021-11-13 01:30:36,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:36,709 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 319 transitions. [2021-11-13 01:30:36,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 319 transitions. [2021-11-13 01:30:36,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-13 01:30:36,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:36,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:36,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-13 01:30:36,710 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:36,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1258225100, now seen corresponding path program 1 times [2021-11-13 01:30:36,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:36,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290711062] [2021-11-13 01:30:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:36,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:37,014 INFO 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 01:30:37,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:37,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290711062] [2021-11-13 01:30:37,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290711062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:37,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:37,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:30:37,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840974424] [2021-11-13 01:30:37,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:37,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:30:37,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:37,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:30:37,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:30:37,016 INFO L87 Difference]: Start difference. First operand 268 states and 319 transitions. Second operand has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:38,836 INFO L93 Difference]: Finished difference Result 818 states and 1045 transitions. [2021-11-13 01:30:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 01:30:38,837 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-13 01:30:38,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:38,838 INFO L225 Difference]: With dead ends: 818 [2021-11-13 01:30:38,838 INFO L226 Difference]: Without dead ends: 803 [2021-11-13 01:30:38,838 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 01:30:38,839 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 838 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 328.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.65ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 388.29ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:38,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 3094 Invalid, 656 Unknown, 0 Unchecked, 5.65ms Time], IncrementalHoareTripleChecker [15 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 388.29ms Time] [2021-11-13 01:30:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-11-13 01:30:39,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 237. [2021-11-13 01:30:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.194915254237288) internal successors, (282), 236 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 282 transitions. [2021-11-13 01:30:39,004 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 282 transitions. Word has length 102 [2021-11-13 01:30:39,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:39,004 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 282 transitions. [2021-11-13 01:30:39,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 282 transitions. [2021-11-13 01:30:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-13 01:30:39,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:39,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:39,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-13 01:30:39,005 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:39,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:39,006 INFO L85 PathProgramCache]: Analyzing trace with hash 839213805, now seen corresponding path program 1 times [2021-11-13 01:30:39,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:39,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798086057] [2021-11-13 01:30:39,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:39,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:39,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:39,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798086057] [2021-11-13 01:30:39,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798086057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:39,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:39,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:30:39,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172950220] [2021-11-13 01:30:39,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:39,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:30:39,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:39,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:30:39,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:30:39,055 INFO L87 Difference]: Start difference. First operand 237 states and 282 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 01:30:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:39,325 INFO L93 Difference]: Finished difference Result 337 states and 416 transitions. [2021-11-13 01:30:39,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:39,325 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 01:30:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:39,326 INFO L225 Difference]: With dead ends: 337 [2021-11-13 01:30:39,326 INFO L226 Difference]: Without dead ends: 290 [2021-11-13 01:30:39,326 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 01:30:39,326 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 73 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.36ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.14ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:39,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 338 Invalid, 29 Unknown, 0 Unchecked, 0.36ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 29.14ms Time] [2021-11-13 01:30:39,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-13 01:30:39,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 280. [2021-11-13 01:30:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.2150537634408602) internal successors, (339), 279 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 339 transitions. [2021-11-13 01:30:39,595 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 339 transitions. Word has length 119 [2021-11-13 01:30:39,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:39,595 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 339 transitions. [2021-11-13 01:30:39,595 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 01:30:39,595 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 339 transitions. [2021-11-13 01:30:39,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 01:30:39,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:39,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:39,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-13 01:30:39,596 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:39,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:39,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1191008833, now seen corresponding path program 1 times [2021-11-13 01:30:39,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:39,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013765887] [2021-11-13 01:30:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:39,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:39,638 INFO 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 01:30:39,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:39,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013765887] [2021-11-13 01:30:39,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013765887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:39,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:39,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:30:39,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998434346] [2021-11-13 01:30:39,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:39,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:30:39,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:39,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:30:39,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:30:39,639 INFO L87 Difference]: Start difference. First operand 280 states and 339 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:40,101 INFO L93 Difference]: Finished difference Result 546 states and 697 transitions. [2021-11-13 01:30:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:40,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-13 01:30:40,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:40,102 INFO L225 Difference]: With dead ends: 546 [2021-11-13 01:30:40,102 INFO L226 Difference]: Without dead ends: 413 [2021-11-13 01:30:40,102 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 01:30:40,103 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 66 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.96ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:40,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 338 Invalid, 29 Unknown, 0 Unchecked, 0.39ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 27.96ms Time] [2021-11-13 01:30:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-13 01:30:40,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 399. [2021-11-13 01:30:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.2537688442211055) internal successors, (499), 398 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 499 transitions. [2021-11-13 01:30:40,528 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 499 transitions. Word has length 122 [2021-11-13 01:30:40,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:40,529 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 499 transitions. [2021-11-13 01:30:40,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 499 transitions. [2021-11-13 01:30:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-13 01:30:40,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:40,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:40,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-13 01:30:40,530 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:40,530 INFO L85 PathProgramCache]: Analyzing trace with hash 909036050, now seen corresponding path program 1 times [2021-11-13 01:30:40,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:40,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154022341] [2021-11-13 01:30:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:40,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:40,575 INFO 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 01:30:40,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:40,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154022341] [2021-11-13 01:30:40,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154022341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:40,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:40,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:30:40,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429507894] [2021-11-13 01:30:40,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:40,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:30:40,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:40,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:30:40,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:30:40,577 INFO L87 Difference]: Start difference. First operand 399 states and 499 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:41,643 INFO L93 Difference]: Finished difference Result 903 states and 1177 transitions. [2021-11-13 01:30:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:41,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-13 01:30:41,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:41,644 INFO L225 Difference]: With dead ends: 903 [2021-11-13 01:30:41,644 INFO L226 Difference]: Without dead ends: 651 [2021-11-13 01:30:41,645 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 01:30:41,645 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 59 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.90ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:41,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 338 Invalid, 29 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 33.90ms Time] [2021-11-13 01:30:41,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-11-13 01:30:42,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 625. [2021-11-13 01:30:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 1.2836538461538463) internal successors, (801), 624 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 801 transitions. [2021-11-13 01:30:42,446 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 801 transitions. Word has length 125 [2021-11-13 01:30:42,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:42,446 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 801 transitions. [2021-11-13 01:30:42,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:42,447 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 801 transitions. [2021-11-13 01:30:42,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-13 01:30:42,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:42,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:42,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-13 01:30:42,448 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:42,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash 998269192, now seen corresponding path program 1 times [2021-11-13 01:30:42,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:42,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677408424] [2021-11-13 01:30:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:42,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:42,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:42,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677408424] [2021-11-13 01:30:42,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677408424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:42,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:42,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:30:42,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245237564] [2021-11-13 01:30:42,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:42,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:30:42,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:42,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:30:42,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:30:42,493 INFO L87 Difference]: Start difference. First operand 625 states and 801 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:44,120 INFO L93 Difference]: Finished difference Result 1581 states and 2083 transitions. [2021-11-13 01:30:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:44,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-13 01:30:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:44,122 INFO L225 Difference]: With dead ends: 1581 [2021-11-13 01:30:44,122 INFO L226 Difference]: Without dead ends: 1103 [2021-11-13 01:30:44,123 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 01:30:44,123 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 52 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.94ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:44,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 338 Invalid, 29 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 30.94ms Time] [2021-11-13 01:30:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2021-11-13 01:30:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1053. [2021-11-13 01:30:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 1.3013307984790874) internal successors, (1369), 1052 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1369 transitions. [2021-11-13 01:30:45,669 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1369 transitions. Word has length 128 [2021-11-13 01:30:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:45,669 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 1369 transitions. [2021-11-13 01:30:45,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1369 transitions. [2021-11-13 01:30:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-13 01:30:45,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:45,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:45,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-13 01:30:45,671 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:45,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1155294624, now seen corresponding path program 1 times [2021-11-13 01:30:45,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:45,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357860201] [2021-11-13 01:30:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:45,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:45,718 INFO 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 01:30:45,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:45,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357860201] [2021-11-13 01:30:45,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357860201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:45,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:45,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:30:45,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062464476] [2021-11-13 01:30:45,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:45,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:30:45,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:45,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:30:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:30:45,721 INFO L87 Difference]: Start difference. First operand 1053 states and 1369 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:48,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:48,883 INFO L93 Difference]: Finished difference Result 2865 states and 3787 transitions. [2021-11-13 01:30:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:48,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-13 01:30:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:48,885 INFO L225 Difference]: With dead ends: 2865 [2021-11-13 01:30:48,885 INFO L226 Difference]: Without dead ends: 1959 [2021-11-13 01:30:48,886 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 01:30:48,887 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 45 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.69ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:48,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 338 Invalid, 29 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 31.69ms Time] [2021-11-13 01:30:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-11-13 01:30:51,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1861. [2021-11-13 01:30:51,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1860 states have (on average 1.3080645161290323) internal successors, (2433), 1860 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2433 transitions. [2021-11-13 01:30:51,739 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2433 transitions. Word has length 131 [2021-11-13 01:30:51,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:51,739 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 2433 transitions. [2021-11-13 01:30:51,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:51,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2433 transitions. [2021-11-13 01:30:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 01:30:51,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:51,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:51,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-13 01:30:51,740 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:30:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash 894098406, now seen corresponding path program 1 times [2021-11-13 01:30:51,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:30:51,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273458531] [2021-11-13 01:30:51,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:51,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:30:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:30:51,787 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:30:51,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273458531] [2021-11-13 01:30:51,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273458531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:51,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:51,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:30:51,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391284597] [2021-11-13 01:30:51,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:51,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:30:51,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:30:51,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:30:51,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:30:51,789 INFO L87 Difference]: Start difference. First operand 1861 states and 2433 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:30:57,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:57,943 INFO L93 Difference]: Finished difference Result 5289 states and 6979 transitions. [2021-11-13 01:30:57,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:57,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-13 01:30:57,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:57,947 INFO L225 Difference]: With dead ends: 5289 [2021-11-13 01:30:57,948 INFO L226 Difference]: Without dead ends: 3575 [2021-11-13 01:30:57,950 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 01:30:57,950 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 35 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.87ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:57,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 338 Invalid, 30 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 33.87ms Time] [2021-11-13 01:30:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2021-11-13 01:31:03,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 3381. [2021-11-13 01:31:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 3380 states have (on average 1.3068047337278106) internal successors, (4417), 3380 states have internal predecessors, (4417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:04,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 4417 transitions. [2021-11-13 01:31:04,006 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 4417 transitions. Word has length 134 [2021-11-13 01:31:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:04,006 INFO L470 AbstractCegarLoop]: Abstraction has 3381 states and 4417 transitions. [2021-11-13 01:31:04,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:04,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 4417 transitions. [2021-11-13 01:31:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-13 01:31:04,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:04,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:04,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-13 01:31:04,007 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:31:04,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:04,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1371630351, now seen corresponding path program 1 times [2021-11-13 01:31:04,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:31:04,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561923020] [2021-11-13 01:31:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:04,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:31:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:04,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:31:04,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561923020] [2021-11-13 01:31:04,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561923020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:04,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:04,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 01:31:04,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770051770] [2021-11-13 01:31:04,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:04,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:31:04,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:31:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:31:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:31:04,087 INFO L87 Difference]: Start difference. First operand 3381 states and 4417 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:24,045 INFO L93 Difference]: Finished difference Result 13706 states and 18066 transitions. [2021-11-13 01:31:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 01:31:24,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-13 01:31:24,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:24,057 INFO L225 Difference]: With dead ends: 13706 [2021-11-13 01:31:24,057 INFO L226 Difference]: Without dead ends: 10472 [2021-11-13 01:31:24,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:31:24,062 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1142 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.78ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:24,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 2092 Invalid, 351 Unknown, 0 Unchecked, 5.78ms Time], IncrementalHoareTripleChecker [10 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 199.60ms Time] [2021-11-13 01:31:24,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10472 states. [2021-11-13 01:31:33,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10472 to 4719. [2021-11-13 01:31:33,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4719 states, 4718 states have (on average 1.301186943620178) internal successors, (6139), 4718 states have internal predecessors, (6139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4719 states to 4719 states and 6139 transitions. [2021-11-13 01:31:33,695 INFO L78 Accepts]: Start accepts. Automaton has 4719 states and 6139 transitions. Word has length 137 [2021-11-13 01:31:33,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:33,695 INFO L470 AbstractCegarLoop]: Abstraction has 4719 states and 6139 transitions. [2021-11-13 01:31:33,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:33,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4719 states and 6139 transitions. [2021-11-13 01:31:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-13 01:31:33,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:33,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:33,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-13 01:31:33,696 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:31:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash -851918415, now seen corresponding path program 1 times [2021-11-13 01:31:33,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:31:33,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877968863] [2021-11-13 01:31:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:33,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:31:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:33,743 INFO 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 01:31:33,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:31:33,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877968863] [2021-11-13 01:31:33,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877968863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:33,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:33,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:31:33,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744581936] [2021-11-13 01:31:33,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:33,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:33,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:31:33,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:33,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:31:33,745 INFO L87 Difference]: Start difference. First operand 4719 states and 6139 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:44,300 INFO L93 Difference]: Finished difference Result 9293 states and 12119 transitions. [2021-11-13 01:31:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:44,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-13 01:31:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:44,308 INFO L225 Difference]: With dead ends: 9293 [2021-11-13 01:31:44,308 INFO L226 Difference]: Without dead ends: 4721 [2021-11-13 01:31:44,313 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 01:31:44,314 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 36 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.47ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:44,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 272 Invalid, 41 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 40.47ms Time] [2021-11-13 01:31:44,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4721 states. [2021-11-13 01:31:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4721 to 4719. [2021-11-13 01:31:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4719 states, 4718 states have (on average 1.3007630351844002) internal successors, (6137), 4718 states have internal predecessors, (6137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4719 states to 4719 states and 6137 transitions. [2021-11-13 01:31:56,193 INFO L78 Accepts]: Start accepts. Automaton has 4719 states and 6137 transitions. Word has length 139 [2021-11-13 01:31:56,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:56,193 INFO L470 AbstractCegarLoop]: Abstraction has 4719 states and 6137 transitions. [2021-11-13 01:31:56,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:31:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4719 states and 6137 transitions. [2021-11-13 01:31:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-13 01:31:56,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:56,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:56,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-13 01:31:56,195 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:31:56,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:56,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1622729575, now seen corresponding path program 1 times [2021-11-13 01:31:56,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:31:56,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783475300] [2021-11-13 01:31:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:56,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:31:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:56,247 INFO 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 01:31:56,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:31:56,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783475300] [2021-11-13 01:31:56,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783475300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:56,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:56,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:31:56,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997807835] [2021-11-13 01:31:56,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:56,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:56,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:31:56,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:56,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:31:56,251 INFO L87 Difference]: Start difference. First operand 4719 states and 6137 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:10,763 INFO L93 Difference]: Finished difference Result 10477 states and 13683 transitions. [2021-11-13 01:32:10,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:32:10,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-13 01:32:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:10,771 INFO L225 Difference]: With dead ends: 10477 [2021-11-13 01:32:10,771 INFO L226 Difference]: Without dead ends: 5905 [2021-11-13 01:32:10,776 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 01:32:10,776 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 93 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.87ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.50ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:10,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 261 Invalid, 30 Unknown, 0 Unchecked, 0.87ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 42.50ms Time] [2021-11-13 01:32:10,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5905 states. [2021-11-13 01:32:25,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5905 to 5903. [2021-11-13 01:32:25,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5903 states, 5902 states have (on average 1.2943070145713318) internal successors, (7639), 5902 states have internal predecessors, (7639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 7639 transitions. [2021-11-13 01:32:25,726 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 7639 transitions. Word has length 139 [2021-11-13 01:32:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:25,727 INFO L470 AbstractCegarLoop]: Abstraction has 5903 states and 7639 transitions. [2021-11-13 01:32:25,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 7639 transitions. [2021-11-13 01:32:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-13 01:32:25,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:25,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:32:25,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-13 01:32:25,728 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:32:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash -729905349, now seen corresponding path program 1 times [2021-11-13 01:32:25,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:32:25,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058101162] [2021-11-13 01:32:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:25,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:32:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:25,849 INFO 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 01:32:25,849 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:32:25,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058101162] [2021-11-13 01:32:25,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058101162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:25,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:25,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:32:25,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92048259] [2021-11-13 01:32:25,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:25,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:32:25,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:32:25,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:32:25,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:32:25,852 INFO L87 Difference]: Start difference. First operand 5903 states and 7639 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:32:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:48,888 INFO L93 Difference]: Finished difference Result 8457 states and 10780 transitions. [2021-11-13 01:32:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:32:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-13 01:32:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:48,900 INFO L225 Difference]: With dead ends: 8457 [2021-11-13 01:32:48,900 INFO L226 Difference]: Without dead ends: 8455 [2021-11-13 01:32:48,902 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 01:32:48,903 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 374 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.99ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.04ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:48,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 1096 Invalid, 151 Unknown, 0 Unchecked, 3.99ms Time], IncrementalHoareTripleChecker [12 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 155.04ms Time] [2021-11-13 01:32:48,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8455 states. [2021-11-13 01:33:02,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8455 to 5903. [2021-11-13 01:33:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5903 states, 5902 states have (on average 1.278041341917994) internal successors, (7543), 5902 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 7543 transitions. [2021-11-13 01:33:02,563 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 7543 transitions. Word has length 140 [2021-11-13 01:33:02,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:02,563 INFO L470 AbstractCegarLoop]: Abstraction has 5903 states and 7543 transitions. [2021-11-13 01:33:02,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 7543 transitions. [2021-11-13 01:33:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-13 01:33:02,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:02,566 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:02,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-13 01:33:02,566 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:33:02,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1935367394, now seen corresponding path program 1 times [2021-11-13 01:33:02,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:33:02,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592784882] [2021-11-13 01:33:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:02,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:33:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:02,812 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 01:33:02,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:33:02,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592784882] [2021-11-13 01:33:02,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592784882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:02,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:02,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:33:02,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672925865] [2021-11-13 01:33:02,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:02,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:33:02,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:33:02,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:33:02,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:33:02,815 INFO L87 Difference]: Start difference. First operand 5903 states and 7543 transitions. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:51,524 INFO L93 Difference]: Finished difference Result 24939 states and 31843 transitions. [2021-11-13 01:33:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 01:33:51,525 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-13 01:33:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:51,550 INFO L225 Difference]: With dead ends: 24939 [2021-11-13 01:33:51,550 INFO L226 Difference]: Without dead ends: 19169 [2021-11-13 01:33:51,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-11-13 01:33:51,559 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1684 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 603.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.45ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 747.29ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:51,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 888 Invalid, 987 Unknown, 0 Unchecked, 9.45ms Time], IncrementalHoareTripleChecker [80 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 747.29ms Time] [2021-11-13 01:33:51,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19169 states. [2021-11-13 01:34:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19169 to 5911. [2021-11-13 01:34:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5911 states, 5910 states have (on average 1.2776649746192894) internal successors, (7551), 5910 states have internal predecessors, (7551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:34:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5911 states to 5911 states and 7551 transitions. [2021-11-13 01:34:05,423 INFO L78 Accepts]: Start accepts. Automaton has 5911 states and 7551 transitions. Word has length 158 [2021-11-13 01:34:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:05,424 INFO L470 AbstractCegarLoop]: Abstraction has 5911 states and 7551 transitions. [2021-11-13 01:34:05,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:34:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 5911 states and 7551 transitions. [2021-11-13 01:34:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-13 01:34:05,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:05,426 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:05,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-13 01:34:05,426 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:34:05,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:05,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1155013727, now seen corresponding path program 1 times [2021-11-13 01:34:05,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:34:05,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979324202] [2021-11-13 01:34:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:05,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:34:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:05,567 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 01:34:05,567 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:34:05,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979324202] [2021-11-13 01:34:05,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979324202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:05,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:34:05,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:34:05,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675335684] [2021-11-13 01:34:05,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:05,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:34:05,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:34:05,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:34:05,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:34:05,570 INFO L87 Difference]: Start difference. First operand 5911 states and 7551 transitions. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:34:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:28,268 INFO L93 Difference]: Finished difference Result 14915 states and 19076 transitions. [2021-11-13 01:34:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 01:34:28,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-13 01:34:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:28,279 INFO L225 Difference]: With dead ends: 14915 [2021-11-13 01:34:28,279 INFO L226 Difference]: Without dead ends: 9145 [2021-11-13 01:34:28,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:34:28,285 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 435 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 226.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.82ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 277.46ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:28,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 445 Invalid, 421 Unknown, 0 Unchecked, 3.82ms Time], IncrementalHoareTripleChecker [10 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 277.46ms Time] [2021-11-13 01:34:28,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9145 states. [2021-11-13 01:34:40,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9145 to 5903. [2021-11-13 01:34:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5903 states, 5902 states have (on average 1.277702473737716) internal successors, (7541), 5902 states have internal predecessors, (7541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:34:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 7541 transitions. [2021-11-13 01:34:40,984 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 7541 transitions. Word has length 159 [2021-11-13 01:34:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:40,984 INFO L470 AbstractCegarLoop]: Abstraction has 5903 states and 7541 transitions. [2021-11-13 01:34:40,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:34:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 7541 transitions. [2021-11-13 01:34:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-13 01:34:40,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:40,986 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:40,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-13 01:34:40,986 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:34:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:40,986 INFO L85 PathProgramCache]: Analyzing trace with hash 71700140, now seen corresponding path program 1 times [2021-11-13 01:34:40,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:34:40,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696319779] [2021-11-13 01:34:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:40,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:34:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:42,159 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 01:34:42,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:34:42,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696319779] [2021-11-13 01:34:42,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696319779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:42,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:34:42,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-13 01:34:42,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969158454] [2021-11-13 01:34:42,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:42,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 01:34:42,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:34:42,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 01:34:42,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=855, Unknown=0, NotChecked=0, Total=930 [2021-11-13 01:34:42,161 INFO L87 Difference]: Start difference. First operand 5903 states and 7541 transitions. Second operand has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:35:11,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:11,935 INFO L93 Difference]: Finished difference Result 17466 states and 22362 transitions. [2021-11-13 01:35:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-13 01:35:11,935 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-13 01:35:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:11,949 INFO L225 Difference]: With dead ends: 17466 [2021-11-13 01:35:11,949 INFO L226 Difference]: Without dead ends: 11701 [2021-11-13 01:35:11,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=461, Invalid=2845, Unknown=0, NotChecked=0, Total=3306 [2021-11-13 01:35:11,955 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 750 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1319.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 3631 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.07ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1538.69ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:11,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 3631 Invalid, 2235 Unknown, 0 Unchecked, 14.07ms Time], IncrementalHoareTripleChecker [39 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 1538.69ms Time] [2021-11-13 01:35:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11701 states. [2021-11-13 01:35:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11701 to 5923. [2021-11-13 01:35:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5923 states, 5922 states have (on average 1.2772711921648092) internal successors, (7564), 5922 states have internal predecessors, (7564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:35:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5923 states to 5923 states and 7564 transitions. [2021-11-13 01:35:25,810 INFO L78 Accepts]: Start accepts. Automaton has 5923 states and 7564 transitions. Word has length 160 [2021-11-13 01:35:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:35:25,811 INFO L470 AbstractCegarLoop]: Abstraction has 5923 states and 7564 transitions. [2021-11-13 01:35:25,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:35:25,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5923 states and 7564 transitions. [2021-11-13 01:35:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-13 01:35:25,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:25,813 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:35:25,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-13 01:35:25,813 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-13 01:35:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1311944474, now seen corresponding path program 1 times [2021-11-13 01:35:25,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:35:25,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213794489] [2021-11-13 01:35:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:25,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:35:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:35,187 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 01:35:35,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:35:35,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213794489] [2021-11-13 01:35:35,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213794489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 01:35:35,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398864704] [2021-11-13 01:35:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:35,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:35:35,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:35:35,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:35:35,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6810eec6-a3fc-44e1-8167-e8cbdffa0be3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 01:35:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:35,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 120 conjunts are in the unsatisfiable core [2021-11-13 01:35:35,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:16,953 INFO L328 TraceCheckSpWp]: Computing backward predicates...