./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs --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 2b77f3a84818afa598b0eb39254acb84b353143275f6b4c2e95d15ee5488d008 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:03:46,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:03:46,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:03:46,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:03:46,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:03:46,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:03:46,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:03:46,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:03:46,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:03:46,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:03:46,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:03:46,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:03:46,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:03:46,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:03:46,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:03:46,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:03:46,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:03:46,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:03:46,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:03:46,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:03:47,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:03:47,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:03:47,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:03:47,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:03:47,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:03:47,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:03:47,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:03:47,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:03:47,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:03:47,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:03:47,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:03:47,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:03:47,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:03:47,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:03:47,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:03:47,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:03:47,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:03:47,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:03:47,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:03:47,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:03:47,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:03:47,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:03:47,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:03:47,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:03:47,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:03:47,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:03:47,091 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:03:47,091 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:03:47,092 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:03:47,092 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:03:47,092 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:03:47,092 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:03:47,093 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:03:47,093 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:03:47,093 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:03:47,094 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:03:47,094 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:03:47,094 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:03:47,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:03:47,095 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:03:47,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:03:47,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:03:47,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:03:47,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:03:47,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:03:47,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:03:47,097 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:03:47,097 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:03:47,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:03:47,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:03:47,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:03:47,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:03:47,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:03:47,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:03:47,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:03:47,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:03:47,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:03:47,100 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:03:47,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:03:47,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:03:47,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:03:47,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:03:47,101 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_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b77f3a84818afa598b0eb39254acb84b353143275f6b4c2e95d15ee5488d008 [2021-11-19 14:03:47,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:03:47,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:03:47,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:03:47,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:03:47,500 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:03:47,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-19 14:03:47,597 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/data/ff28f7fc7/68a145027317434b83a7d87cbefe596c/FLAG4249febe0 [2021-11-19 14:03:48,658 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:03:48,680 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-19 14:03:48,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/data/ff28f7fc7/68a145027317434b83a7d87cbefe596c/FLAG4249febe0 [2021-11-19 14:03:49,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/data/ff28f7fc7/68a145027317434b83a7d87cbefe596c [2021-11-19 14:03:49,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:03:49,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:03:49,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:03:49,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:03:49,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:03:49,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:49" (1/1) ... [2021-11-19 14:03:49,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fe23c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:49, skipping insertion in model container [2021-11-19 14:03:49,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:49" (1/1) ... [2021-11-19 14:03:49,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:03:49,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:03:50,118 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2021-11-19 14:03:50,166 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2021-11-19 14:03:50,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2021-11-19 14:03:50,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-19 14:03:50,217 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2021-11-19 14:03:50,236 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2021-11-19 14:03:50,255 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2021-11-19 14:03:50,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2021-11-19 14:03:50,288 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2021-11-19 14:03:50,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2021-11-19 14:03:50,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2021-11-19 14:03:50,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2021-11-19 14:03:50,388 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2021-11-19 14:03:50,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2021-11-19 14:03:50,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2021-11-19 14:03:50,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2021-11-19 14:03:50,537 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2021-11-19 14:03:50,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2021-11-19 14:03:50,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2021-11-19 14:03:50,571 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2021-11-19 14:03:50,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2021-11-19 14:03:50,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2021-11-19 14:03:50,729 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2021-11-19 14:03:50,738 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2021-11-19 14:03:50,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2021-11-19 14:03:50,763 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2021-11-19 14:03:50,790 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2021-11-19 14:03:50,828 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2021-11-19 14:03:50,890 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2021-11-19 14:03:51,958 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:03:51,982 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:03:52,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2021-11-19 14:03:52,161 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2021-11-19 14:03:52,212 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2021-11-19 14:03:52,219 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-19 14:03:52,231 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2021-11-19 14:03:52,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2021-11-19 14:03:52,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2021-11-19 14:03:52,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2021-11-19 14:03:52,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2021-11-19 14:03:52,280 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2021-11-19 14:03:52,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2021-11-19 14:03:52,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2021-11-19 14:03:52,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2021-11-19 14:03:52,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2021-11-19 14:03:52,349 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2021-11-19 14:03:52,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2021-11-19 14:03:52,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2021-11-19 14:03:52,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2021-11-19 14:03:52,422 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2021-11-19 14:03:52,436 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2021-11-19 14:03:52,460 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2021-11-19 14:03:52,501 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2021-11-19 14:03:52,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2021-11-19 14:03:52,577 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2021-11-19 14:03:52,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2021-11-19 14:03:52,614 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2021-11-19 14:03:52,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2021-11-19 14:03:52,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2021-11-19 14:03:52,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2021-11-19 14:03:53,563 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:03:53,622 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:03:53,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53 WrapperNode [2021-11-19 14:03:53,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:03:53,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:03:53,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:03:53,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:03:53,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53" (1/1) ... [2021-11-19 14:03:53,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53" (1/1) ... [2021-11-19 14:03:53,947 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12087 [2021-11-19 14:03:53,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:03:53,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:03:53,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:03:53,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:03:53,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53" (1/1) ... [2021-11-19 14:03:53,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53" (1/1) ... [2021-11-19 14:03:54,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53" (1/1) ... [2021-11-19 14:03:54,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53" (1/1) ... [2021-11-19 14:03:54,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53" (1/1) ... [2021-11-19 14:03:54,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53" (1/1) ... [2021-11-19 14:03:54,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53" (1/1) ... [2021-11-19 14:03:54,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:03:54,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:03:54,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:03:54,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:03:54,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53" (1/1) ... [2021-11-19 14:03:54,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:03:54,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:54,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:03:54,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83159653-3b5e-41c2-a0ef-a75391f34881/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:03:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:03:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:03:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:03:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:03:55,074 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:03:55,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:04:01,301 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:04:02,393 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:04:02,393 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:04:02,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:02 BoogieIcfgContainer [2021-11-19 14:04:02,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:04:02,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:04:02,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:04:02,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:04:02,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:03:49" (1/3) ... [2021-11-19 14:04:02,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2126e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:02, skipping insertion in model container [2021-11-19 14:04:02,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:53" (2/3) ... [2021-11-19 14:04:02,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2126e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:02, skipping insertion in model container [2021-11-19 14:04:02,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:02" (3/3) ... [2021-11-19 14:04:02,414 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-19 14:04:02,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:04:02,420 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-19 14:04:02,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:04:02,524 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 [2021-11-19 14:04:02,525 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-19 14:04:02,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 1987 states, 1957 states have (on average 1.8727644353602453) internal successors, (3665), 1986 states have internal predecessors, (3665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-19 14:04:02,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:02,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:02,652 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:02,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1135640583, now seen corresponding path program 1 times [2021-11-19 14:04:02,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:02,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118506601] [2021-11-19 14:04:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:02,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:03,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:03,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118506601] [2021-11-19 14:04:03,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118506601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:03,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:03,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:04:03,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478410472] [2021-11-19 14:04:03,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:03,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:04:03,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:04:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:04:03,386 INFO L87 Difference]: Start difference. First operand has 1987 states, 1957 states have (on average 1.8727644353602453) internal successors, (3665), 1986 states have internal predecessors, (3665), 0 states have call successors, (0), 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 19.8) internal successors, (99), 4 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) [2021-11-19 14:04:05,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:05,298 INFO L93 Difference]: Finished difference Result 2905 states and 5187 transitions. [2021-11-19 14:04:05,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:04:05,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 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 [2021-11-19 14:04:05,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:05,404 INFO L225 Difference]: With dead ends: 2905 [2021-11-19 14:04:05,405 INFO L226 Difference]: Without dead ends: 1485 [2021-11-19 14:04:05,419 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 [2021-11-19 14:04:05,436 INFO L933 BasicCegarLoop]: 1739 mSDtfsCounter, 7777 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7777 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:05,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7777 Valid, 1779 Invalid, 920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:04:05,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2021-11-19 14:04:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1485. [2021-11-19 14:04:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1456 states have (on average 1.3070054945054945) internal successors, (1903), 1484 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1903 transitions. [2021-11-19 14:04:05,684 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1903 transitions. Word has length 99 [2021-11-19 14:04:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:05,684 INFO L470 AbstractCegarLoop]: Abstraction has 1485 states and 1903 transitions. [2021-11-19 14:04:05,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 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) [2021-11-19 14:04:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1903 transitions. [2021-11-19 14:04:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:04:05,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:05,696 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] [2021-11-19 14:04:05,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:04:05,697 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:05,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:05,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1968753033, now seen corresponding path program 1 times [2021-11-19 14:04:05,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:05,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678734729] [2021-11-19 14:04:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:05,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:06,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:06,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678734729] [2021-11-19 14:04:06,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678734729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:06,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:06,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:04:06,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842719279] [2021-11-19 14:04:06,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:06,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:04:06,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:06,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:04:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:04:06,090 INFO L87 Difference]: Start difference. First operand 1485 states and 1903 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:07,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:07,516 INFO L93 Difference]: Finished difference Result 2397 states and 3170 transitions. [2021-11-19 14:04:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:04:07,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-19 14:04:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:07,527 INFO L225 Difference]: With dead ends: 2397 [2021-11-19 14:04:07,527 INFO L226 Difference]: Without dead ends: 1277 [2021-11-19 14:04:07,532 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 [2021-11-19 14:04:07,534 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 4777 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4777 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:07,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4777 Valid, 869 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:04:07,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-11-19 14:04:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1277. [2021-11-19 14:04:07,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1248 states have (on average 1.3317307692307692) internal successors, (1662), 1276 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1662 transitions. [2021-11-19 14:04:07,603 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1662 transitions. Word has length 100 [2021-11-19 14:04:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:07,604 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 1662 transitions. [2021-11-19 14:04:07,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1662 transitions. [2021-11-19 14:04:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 14:04:07,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:07,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:07,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 14:04:07,610 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:07,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash -703352954, now seen corresponding path program 1 times [2021-11-19 14:04:07,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:07,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957942638] [2021-11-19 14:04:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:07,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:07,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:07,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957942638] [2021-11-19 14:04:07,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957942638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:07,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:07,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:04:07,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581506774] [2021-11-19 14:04:07,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:07,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:04:07,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:07,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:04:07,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:04:07,812 INFO L87 Difference]: Start difference. First operand 1277 states and 1662 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 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) [2021-11-19 14:04:08,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:08,949 INFO L93 Difference]: Finished difference Result 2189 states and 2928 transitions. [2021-11-19 14:04:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:04:08,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 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 [2021-11-19 14:04:08,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:08,959 INFO L225 Difference]: With dead ends: 2189 [2021-11-19 14:04:08,960 INFO L226 Difference]: Without dead ends: 1137 [2021-11-19 14:04:08,962 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 [2021-11-19 14:04:08,976 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 4398 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4398 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:08,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4398 Valid, 826 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:04:08,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-11-19 14:04:09,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1137. [2021-11-19 14:04:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1108 states have (on average 1.358303249097473) internal successors, (1505), 1136 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1505 transitions. [2021-11-19 14:04:09,049 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1505 transitions. Word has length 101 [2021-11-19 14:04:09,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:09,050 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 1505 transitions. [2021-11-19 14:04:09,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 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) [2021-11-19 14:04:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1505 transitions. [2021-11-19 14:04:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 14:04:09,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:09,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:09,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 14:04:09,058 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash 472316096, now seen corresponding path program 1 times [2021-11-19 14:04:09,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:09,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315011671] [2021-11-19 14:04:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:09,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:09,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:09,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315011671] [2021-11-19 14:04:09,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315011671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:09,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:09,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:04:09,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250335874] [2021-11-19 14:04:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:09,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:04:09,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:09,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:04:09,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:04:09,320 INFO L87 Difference]: Start difference. First operand 1137 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 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) [2021-11-19 14:04:10,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:10,826 INFO L93 Difference]: Finished difference Result 2049 states and 2770 transitions. [2021-11-19 14:04:10,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:04:10,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 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 [2021-11-19 14:04:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:10,835 INFO L225 Difference]: With dead ends: 2049 [2021-11-19 14:04:10,836 INFO L226 Difference]: Without dead ends: 1097 [2021-11-19 14:04:10,838 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 [2021-11-19 14:04:10,840 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 4054 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4054 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:10,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4054 Valid, 658 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:04:10,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2021-11-19 14:04:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2021-11-19 14:04:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1068 states have (on average 1.3632958801498127) internal successors, (1456), 1096 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1456 transitions. [2021-11-19 14:04:10,920 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1456 transitions. Word has length 102 [2021-11-19 14:04:10,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:10,921 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 1456 transitions. [2021-11-19 14:04:10,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 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) [2021-11-19 14:04:10,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1456 transitions. [2021-11-19 14:04:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 14:04:10,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:10,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:10,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 14:04:10,927 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:10,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:10,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1771013563, now seen corresponding path program 1 times [2021-11-19 14:04:10,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:10,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149692805] [2021-11-19 14:04:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:10,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:11,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:11,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149692805] [2021-11-19 14:04:11,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149692805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:11,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:11,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:04:11,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686781574] [2021-11-19 14:04:11,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:11,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:04:11,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:04:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:04:11,081 INFO L87 Difference]: Start difference. First operand 1097 states and 1456 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:12,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:12,138 INFO L93 Difference]: Finished difference Result 2009 states and 2720 transitions. [2021-11-19 14:04:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:04:12,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-19 14:04:12,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:12,148 INFO L225 Difference]: With dead ends: 2009 [2021-11-19 14:04:12,148 INFO L226 Difference]: Without dead ends: 1035 [2021-11-19 14:04:12,150 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 [2021-11-19 14:04:12,152 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 4089 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:12,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4089 Valid, 754 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:04:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2021-11-19 14:04:12,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1035. [2021-11-19 14:04:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1006 states have (on average 1.3807157057654076) internal successors, (1389), 1034 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1389 transitions. [2021-11-19 14:04:12,237 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1389 transitions. Word has length 103 [2021-11-19 14:04:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:12,238 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1389 transitions. [2021-11-19 14:04:12,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1389 transitions. [2021-11-19 14:04:12,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-19 14:04:12,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:12,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:12,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 14:04:12,244 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:12,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash -54343083, now seen corresponding path program 1 times [2021-11-19 14:04:12,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:12,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177820569] [2021-11-19 14:04:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:12,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:12,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:12,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177820569] [2021-11-19 14:04:12,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177820569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:12,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:12,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:04:12,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046249156] [2021-11-19 14:04:12,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:12,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:04:12,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:12,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:04:12,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:04:12,406 INFO L87 Difference]: Start difference. First operand 1035 states and 1389 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:14,052 INFO L93 Difference]: Finished difference Result 2487 states and 3383 transitions. [2021-11-19 14:04:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:04:14,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-19 14:04:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:14,064 INFO L225 Difference]: With dead ends: 2487 [2021-11-19 14:04:14,064 INFO L226 Difference]: Without dead ends: 1541 [2021-11-19 14:04:14,067 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 [2021-11-19 14:04:14,069 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 5368 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5368 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:14,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5368 Valid, 1142 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:04:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2021-11-19 14:04:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1439. [2021-11-19 14:04:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1410 states have (on average 1.4184397163120568) internal successors, (2000), 1438 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2000 transitions. [2021-11-19 14:04:14,216 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2000 transitions. Word has length 104 [2021-11-19 14:04:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:14,217 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 2000 transitions. [2021-11-19 14:04:14,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:14,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2000 transitions. [2021-11-19 14:04:14,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 14:04:14,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:14,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:14,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 14:04:14,223 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:14,224 INFO L85 PathProgramCache]: Analyzing trace with hash 883423548, now seen corresponding path program 1 times [2021-11-19 14:04:14,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:14,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460527751] [2021-11-19 14:04:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:14,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:14,339 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:14,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460527751] [2021-11-19 14:04:14,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460527751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:14,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:14,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:04:14,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262867977] [2021-11-19 14:04:14,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:14,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:04:14,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:14,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:04:14,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:04:14,342 INFO L87 Difference]: Start difference. First operand 1439 states and 2000 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:15,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:15,507 INFO L93 Difference]: Finished difference Result 2789 states and 3910 transitions. [2021-11-19 14:04:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:04:15,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-19 14:04:15,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:15,517 INFO L225 Difference]: With dead ends: 2789 [2021-11-19 14:04:15,518 INFO L226 Difference]: Without dead ends: 1428 [2021-11-19 14:04:15,520 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 [2021-11-19 14:04:15,521 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 3866 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3866 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:15,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3866 Valid, 711 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:04:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-11-19 14:04:15,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1428. [2021-11-19 14:04:15,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4195854181558256) internal successors, (1986), 1427 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1986 transitions. [2021-11-19 14:04:15,629 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1986 transitions. Word has length 105 [2021-11-19 14:04:15,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:15,629 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1986 transitions. [2021-11-19 14:04:15,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1986 transitions. [2021-11-19 14:04:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-19 14:04:15,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:15,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:15,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 14:04:15,635 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:15,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1511270635, now seen corresponding path program 1 times [2021-11-19 14:04:15,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:15,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285080472] [2021-11-19 14:04:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:15,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:15,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:15,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285080472] [2021-11-19 14:04:15,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285080472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:15,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:15,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:04:15,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427438032] [2021-11-19 14:04:15,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:15,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:04:15,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:04:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:04:15,949 INFO L87 Difference]: Start difference. First operand 1428 states and 1986 transitions. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:19,880 INFO L93 Difference]: Finished difference Result 2886 states and 3974 transitions. [2021-11-19 14:04:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 14:04:19,881 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-19 14:04:19,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:19,900 INFO L225 Difference]: With dead ends: 2886 [2021-11-19 14:04:19,900 INFO L226 Difference]: Without dead ends: 2668 [2021-11-19 14:04:19,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:04:19,903 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 7917 mSDsluCounter, 3999 mSDsCounter, 0 mSdLazyCounter, 4324 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7917 SdHoareTripleChecker+Valid, 4725 SdHoareTripleChecker+Invalid, 4372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:19,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7917 Valid, 4725 Invalid, 4372 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 4324 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 14:04:19,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2021-11-19 14:04:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 1431. [2021-11-19 14:04:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1402 states have (on average 1.4186875891583453) internal successors, (1989), 1430 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1989 transitions. [2021-11-19 14:04:20,110 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1989 transitions. Word has length 106 [2021-11-19 14:04:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:20,111 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 1989 transitions. [2021-11-19 14:04:20,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1989 transitions. [2021-11-19 14:04:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-19 14:04:20,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:20,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:20,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 14:04:20,117 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1376947041, now seen corresponding path program 1 times [2021-11-19 14:04:20,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:20,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310792740] [2021-11-19 14:04:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:20,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:20,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:20,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310792740] [2021-11-19 14:04:20,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310792740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:20,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:20,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:20,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976455453] [2021-11-19 14:04:20,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:20,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:20,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:20,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:20,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:20,337 INFO L87 Difference]: Start difference. First operand 1431 states and 1989 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:22,790 INFO L93 Difference]: Finished difference Result 2382 states and 3276 transitions. [2021-11-19 14:04:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:04:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-19 14:04:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:22,806 INFO L225 Difference]: With dead ends: 2382 [2021-11-19 14:04:22,807 INFO L226 Difference]: Without dead ends: 2080 [2021-11-19 14:04:22,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:04:22,810 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 4055 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4055 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:22,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4055 Valid, 3094 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:04:22,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-11-19 14:04:22,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1428. [2021-11-19 14:04:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4188706218727662) internal successors, (1985), 1427 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1985 transitions. [2021-11-19 14:04:22,975 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1985 transitions. Word has length 106 [2021-11-19 14:04:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:22,975 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1985 transitions. [2021-11-19 14:04:22,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1985 transitions. [2021-11-19 14:04:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-19 14:04:22,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:22,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:22,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 14:04:22,989 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:22,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1798506288, now seen corresponding path program 1 times [2021-11-19 14:04:22,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:22,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267236936] [2021-11-19 14:04:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:22,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:23,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:23,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267236936] [2021-11-19 14:04:23,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267236936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:23,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:23,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:23,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693134068] [2021-11-19 14:04:23,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:23,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:23,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:23,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:23,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:23,193 INFO L87 Difference]: Start difference. First operand 1428 states and 1985 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:25,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:25,628 INFO L93 Difference]: Finished difference Result 2620 states and 3624 transitions. [2021-11-19 14:04:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:04:25,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-19 14:04:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:25,643 INFO L225 Difference]: With dead ends: 2620 [2021-11-19 14:04:25,643 INFO L226 Difference]: Without dead ends: 2425 [2021-11-19 14:04:25,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:04:25,646 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 3485 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 3458 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3485 SdHoareTripleChecker+Valid, 3786 SdHoareTripleChecker+Invalid, 3480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:25,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3485 Valid, 3786 Invalid, 3480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3458 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:04:25,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-19 14:04:25,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1428. [2021-11-19 14:04:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4181558255897069) internal successors, (1984), 1427 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) [2021-11-19 14:04:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1984 transitions. [2021-11-19 14:04:25,814 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1984 transitions. Word has length 106 [2021-11-19 14:04:25,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:25,814 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1984 transitions. [2021-11-19 14:04:25,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:25,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1984 transitions. [2021-11-19 14:04:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-19 14:04:25,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:25,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:25,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 14:04:25,820 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:25,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:25,821 INFO L85 PathProgramCache]: Analyzing trace with hash -43154195, now seen corresponding path program 1 times [2021-11-19 14:04:25,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:25,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779880428] [2021-11-19 14:04:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:25,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:26,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:26,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779880428] [2021-11-19 14:04:26,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779880428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:26,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:26,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:04:26,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366652688] [2021-11-19 14:04:26,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:26,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:04:26,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:26,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:04:26,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:04:26,094 INFO L87 Difference]: Start difference. First operand 1428 states and 1984 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:29,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:29,047 INFO L93 Difference]: Finished difference Result 2721 states and 3765 transitions. [2021-11-19 14:04:29,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:04:29,048 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-19 14:04:29,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:29,060 INFO L225 Difference]: With dead ends: 2721 [2021-11-19 14:04:29,060 INFO L226 Difference]: Without dead ends: 2417 [2021-11-19 14:04:29,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:04:29,063 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 3518 mSDsluCounter, 4621 mSDsCounter, 0 mSdLazyCounter, 5062 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3518 SdHoareTripleChecker+Valid, 5530 SdHoareTripleChecker+Invalid, 5083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:29,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3518 Valid, 5530 Invalid, 5083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 5062 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 14:04:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2021-11-19 14:04:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 1428. [2021-11-19 14:04:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4167262330235884) internal successors, (1982), 1427 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:29,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1982 transitions. [2021-11-19 14:04:29,234 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1982 transitions. Word has length 106 [2021-11-19 14:04:29,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:29,235 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1982 transitions. [2021-11-19 14:04:29,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:29,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1982 transitions. [2021-11-19 14:04:29,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-19 14:04:29,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:29,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:29,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 14:04:29,241 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:29,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1363595425, now seen corresponding path program 1 times [2021-11-19 14:04:29,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:29,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454070921] [2021-11-19 14:04:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:29,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:29,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:29,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454070921] [2021-11-19 14:04:29,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454070921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:29,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:29,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 14:04:29,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117517424] [2021-11-19 14:04:29,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:29,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:04:29,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:04:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:04:29,413 INFO L87 Difference]: Start difference. First operand 1428 states and 1982 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:30,897 INFO L93 Difference]: Finished difference Result 2402 states and 3194 transitions. [2021-11-19 14:04:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:04:30,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-19 14:04:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:30,906 INFO L225 Difference]: With dead ends: 2402 [2021-11-19 14:04:30,906 INFO L226 Difference]: Without dead ends: 1812 [2021-11-19 14:04:30,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:04:30,909 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 5592 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5592 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:30,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5592 Valid, 1443 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:04:30,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2021-11-19 14:04:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1428. [2021-11-19 14:04:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.416011436740529) internal successors, (1981), 1427 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1981 transitions. [2021-11-19 14:04:31,092 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1981 transitions. Word has length 106 [2021-11-19 14:04:31,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:31,092 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1981 transitions. [2021-11-19 14:04:31,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:31,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1981 transitions. [2021-11-19 14:04:31,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 14:04:31,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:31,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:31,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 14:04:31,099 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:31,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:31,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1774608653, now seen corresponding path program 1 times [2021-11-19 14:04:31,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:31,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367357399] [2021-11-19 14:04:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:31,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:31,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:31,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367357399] [2021-11-19 14:04:31,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367357399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:31,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:31,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:31,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334412892] [2021-11-19 14:04:31,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:31,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:31,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:31,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:31,294 INFO L87 Difference]: Start difference. First operand 1428 states and 1981 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:33,458 INFO L93 Difference]: Finished difference Result 2257 states and 3049 transitions. [2021-11-19 14:04:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:04:33,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-19 14:04:33,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:33,468 INFO L225 Difference]: With dead ends: 2257 [2021-11-19 14:04:33,468 INFO L226 Difference]: Without dead ends: 2252 [2021-11-19 14:04:33,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:04:33,470 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 3631 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 2856 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3631 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:33,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3631 Valid, 2839 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2856 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:04:33,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-19 14:04:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1428. [2021-11-19 14:04:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4152966404574696) internal successors, (1980), 1427 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1980 transitions. [2021-11-19 14:04:33,635 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1980 transitions. Word has length 108 [2021-11-19 14:04:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:33,635 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1980 transitions. [2021-11-19 14:04:33,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1980 transitions. [2021-11-19 14:04:33,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 14:04:33,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:33,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:33,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 14:04:33,642 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1111952338, now seen corresponding path program 1 times [2021-11-19 14:04:33,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:33,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484863642] [2021-11-19 14:04:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:33,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:33,840 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:33,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484863642] [2021-11-19 14:04:33,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484863642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:33,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:33,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:33,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448917668] [2021-11-19 14:04:33,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:33,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:33,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:33,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:33,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:33,843 INFO L87 Difference]: Start difference. First operand 1428 states and 1980 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:36,221 INFO L93 Difference]: Finished difference Result 2358 states and 3185 transitions. [2021-11-19 14:04:36,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:04:36,222 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-19 14:04:36,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:36,235 INFO L225 Difference]: With dead ends: 2358 [2021-11-19 14:04:36,236 INFO L226 Difference]: Without dead ends: 2252 [2021-11-19 14:04:36,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:04:36,238 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 3632 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 2848 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:36,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3632 Valid, 2818 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2848 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:04:36,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-19 14:04:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1428. [2021-11-19 14:04:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4145818441744102) internal successors, (1979), 1427 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1979 transitions. [2021-11-19 14:04:36,431 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1979 transitions. Word has length 108 [2021-11-19 14:04:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:36,432 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1979 transitions. [2021-11-19 14:04:36,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1979 transitions. [2021-11-19 14:04:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 14:04:36,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:36,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:36,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 14:04:36,444 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:36,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:36,445 INFO L85 PathProgramCache]: Analyzing trace with hash -507418736, now seen corresponding path program 1 times [2021-11-19 14:04:36,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:36,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76351338] [2021-11-19 14:04:36,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:36,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:36,632 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:36,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76351338] [2021-11-19 14:04:36,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76351338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:36,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:36,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:36,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486856682] [2021-11-19 14:04:36,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:36,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:36,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:36,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:36,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:36,635 INFO L87 Difference]: Start difference. First operand 1428 states and 1979 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:38,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:38,961 INFO L93 Difference]: Finished difference Result 2643 states and 3641 transitions. [2021-11-19 14:04:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:04:38,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-19 14:04:38,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:38,976 INFO L225 Difference]: With dead ends: 2643 [2021-11-19 14:04:38,977 INFO L226 Difference]: Without dead ends: 2425 [2021-11-19 14:04:38,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:04:38,979 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 3508 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3508 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 3302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:38,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3508 Valid, 3637 Invalid, 3302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:04:38,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-19 14:04:39,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1428. [2021-11-19 14:04:39,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4138670478913509) internal successors, (1978), 1427 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1978 transitions. [2021-11-19 14:04:39,158 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1978 transitions. Word has length 108 [2021-11-19 14:04:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:39,159 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1978 transitions. [2021-11-19 14:04:39,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:39,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1978 transitions. [2021-11-19 14:04:39,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 14:04:39,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:39,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:39,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 14:04:39,165 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:39,165 INFO L85 PathProgramCache]: Analyzing trace with hash 899330884, now seen corresponding path program 1 times [2021-11-19 14:04:39,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:39,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373479605] [2021-11-19 14:04:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:39,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:39,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:39,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373479605] [2021-11-19 14:04:39,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373479605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:39,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:39,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:39,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499052345] [2021-11-19 14:04:39,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:39,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:39,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:39,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:39,340 INFO L87 Difference]: Start difference. First operand 1428 states and 1978 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:41,751 INFO L93 Difference]: Finished difference Result 2361 states and 3185 transitions. [2021-11-19 14:04:41,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:04:41,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-19 14:04:41,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:41,772 INFO L225 Difference]: With dead ends: 2361 [2021-11-19 14:04:41,772 INFO L226 Difference]: Without dead ends: 2252 [2021-11-19 14:04:41,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:04:41,775 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 5279 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 2843 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5279 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 3207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 2843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:41,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5279 Valid, 2838 Invalid, 3207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 2843 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:04:41,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-19 14:04:41,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1428. [2021-11-19 14:04:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4131522516082917) internal successors, (1977), 1427 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1977 transitions. [2021-11-19 14:04:42,011 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1977 transitions. Word has length 108 [2021-11-19 14:04:42,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:42,011 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1977 transitions. [2021-11-19 14:04:42,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:42,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1977 transitions. [2021-11-19 14:04:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 14:04:42,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:42,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:42,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 14:04:42,017 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:42,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:42,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1711979523, now seen corresponding path program 1 times [2021-11-19 14:04:42,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:42,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949865129] [2021-11-19 14:04:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:42,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:42,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:42,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949865129] [2021-11-19 14:04:42,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949865129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:42,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:42,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:42,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320532398] [2021-11-19 14:04:42,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:42,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:42,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:42,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:42,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:42,261 INFO L87 Difference]: Start difference. First operand 1428 states and 1977 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:44,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:44,408 INFO L93 Difference]: Finished difference Result 2257 states and 3042 transitions. [2021-11-19 14:04:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:04:44,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-19 14:04:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:44,414 INFO L225 Difference]: With dead ends: 2257 [2021-11-19 14:04:44,414 INFO L226 Difference]: Without dead ends: 2252 [2021-11-19 14:04:44,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:04:44,417 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 3620 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3620 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:44,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3620 Valid, 2839 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2835 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:04:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-19 14:04:44,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1428. [2021-11-19 14:04:44,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.411722659042173) internal successors, (1975), 1427 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1975 transitions. [2021-11-19 14:04:44,581 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1975 transitions. Word has length 108 [2021-11-19 14:04:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:44,581 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1975 transitions. [2021-11-19 14:04:44,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:44,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1975 transitions. [2021-11-19 14:04:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 14:04:44,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:44,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:44,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 14:04:44,586 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:44,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:44,587 INFO L85 PathProgramCache]: Analyzing trace with hash -567046043, now seen corresponding path program 1 times [2021-11-19 14:04:44,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:44,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761132978] [2021-11-19 14:04:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:44,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:44,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:44,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761132978] [2021-11-19 14:04:44,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761132978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:44,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:44,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:44,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719328256] [2021-11-19 14:04:44,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:44,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:44,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:44,760 INFO L87 Difference]: Start difference. First operand 1428 states and 1975 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:46,785 INFO L93 Difference]: Finished difference Result 2120 states and 2923 transitions. [2021-11-19 14:04:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:04:46,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-19 14:04:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:46,791 INFO L225 Difference]: With dead ends: 2120 [2021-11-19 14:04:46,791 INFO L226 Difference]: Without dead ends: 1540 [2021-11-19 14:04:46,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:04:46,793 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 2817 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 2727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:46,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2817 Valid, 2980 Invalid, 2727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:04:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2021-11-19 14:04:46,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1428. [2021-11-19 14:04:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4102930664760542) internal successors, (1973), 1427 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1973 transitions. [2021-11-19 14:04:46,950 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1973 transitions. Word has length 108 [2021-11-19 14:04:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:46,950 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1973 transitions. [2021-11-19 14:04:46,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1973 transitions. [2021-11-19 14:04:46,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:04:46,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:46,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:46,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 14:04:46,954 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:46,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:46,954 INFO L85 PathProgramCache]: Analyzing trace with hash -609046091, now seen corresponding path program 1 times [2021-11-19 14:04:46,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:46,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448234150] [2021-11-19 14:04:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:46,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:47,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:47,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448234150] [2021-11-19 14:04:47,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448234150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:47,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:47,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:47,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872276506] [2021-11-19 14:04:47,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:47,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:47,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:47,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:47,141 INFO L87 Difference]: Start difference. First operand 1428 states and 1973 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:50,110 INFO L93 Difference]: Finished difference Result 2512 states and 3443 transitions. [2021-11-19 14:04:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:04:50,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:04:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:50,116 INFO L225 Difference]: With dead ends: 2512 [2021-11-19 14:04:50,116 INFO L226 Difference]: Without dead ends: 2389 [2021-11-19 14:04:50,117 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 [2021-11-19 14:04:50,118 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 4196 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 3642 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4196 SdHoareTripleChecker+Valid, 4056 SdHoareTripleChecker+Invalid, 3708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:50,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4196 Valid, 4056 Invalid, 3708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3642 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:04:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-19 14:04:50,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-19 14:04:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.409578270192995) internal successors, (1972), 1427 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1972 transitions. [2021-11-19 14:04:50,314 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1972 transitions. Word has length 110 [2021-11-19 14:04:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:50,314 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1972 transitions. [2021-11-19 14:04:50,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:50,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1972 transitions. [2021-11-19 14:04:50,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:04:50,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:50,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:50,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 14:04:50,318 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:50,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:50,319 INFO L85 PathProgramCache]: Analyzing trace with hash 359138964, now seen corresponding path program 1 times [2021-11-19 14:04:50,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:50,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897509310] [2021-11-19 14:04:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:50,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:50,488 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:50,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897509310] [2021-11-19 14:04:50,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897509310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:50,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:50,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:50,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990435463] [2021-11-19 14:04:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:50,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:50,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:50,491 INFO L87 Difference]: Start difference. First operand 1428 states and 1972 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:53,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:53,360 INFO L93 Difference]: Finished difference Result 2566 states and 3527 transitions. [2021-11-19 14:04:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:04:53,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:04:53,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:53,364 INFO L225 Difference]: With dead ends: 2566 [2021-11-19 14:04:53,364 INFO L226 Difference]: Without dead ends: 2413 [2021-11-19 14:04:53,365 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 [2021-11-19 14:04:53,366 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 3148 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 3784 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3148 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:53,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3148 Valid, 4188 Invalid, 3816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3784 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:04:53,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-19 14:04:53,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-19 14:04:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4088634739099357) internal successors, (1971), 1427 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1971 transitions. [2021-11-19 14:04:53,595 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1971 transitions. Word has length 110 [2021-11-19 14:04:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:53,595 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1971 transitions. [2021-11-19 14:04:53,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1971 transitions. [2021-11-19 14:04:53,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:04:53,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:53,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:53,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 14:04:53,599 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:53,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1547475906, now seen corresponding path program 1 times [2021-11-19 14:04:53,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:53,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846814416] [2021-11-19 14:04:53,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:53,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:53,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:53,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846814416] [2021-11-19 14:04:53,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846814416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:53,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:53,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:53,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523144338] [2021-11-19 14:04:53,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:53,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:53,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:53,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:53,781 INFO L87 Difference]: Start difference. First operand 1428 states and 1971 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:56,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:56,399 INFO L93 Difference]: Finished difference Result 2506 states and 3432 transitions. [2021-11-19 14:04:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:04:56,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:04:56,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:56,404 INFO L225 Difference]: With dead ends: 2506 [2021-11-19 14:04:56,404 INFO L226 Difference]: Without dead ends: 2389 [2021-11-19 14:04:56,405 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 [2021-11-19 14:04:56,406 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 4207 mSDsluCounter, 3413 mSDsCounter, 0 mSdLazyCounter, 3715 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 3781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:56,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4207 Valid, 4221 Invalid, 3781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3715 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:04:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-19 14:04:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-19 14:04:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4081486776268763) internal successors, (1970), 1427 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1970 transitions. [2021-11-19 14:04:56,664 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1970 transitions. Word has length 110 [2021-11-19 14:04:56,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:56,665 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1970 transitions. [2021-11-19 14:04:56,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1970 transitions. [2021-11-19 14:04:56,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:04:56,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:56,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:56,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 14:04:56,670 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1100437199, now seen corresponding path program 1 times [2021-11-19 14:04:56,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:56,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717891554] [2021-11-19 14:04:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:56,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:56,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:56,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717891554] [2021-11-19 14:04:56,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717891554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:56,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:56,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:56,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401115223] [2021-11-19 14:04:56,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:56,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:56,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:56,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:56,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:56,863 INFO L87 Difference]: Start difference. First operand 1428 states and 1970 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:59,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:59,174 INFO L93 Difference]: Finished difference Result 2356 states and 3169 transitions. [2021-11-19 14:04:59,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:04:59,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:04:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:59,182 INFO L225 Difference]: With dead ends: 2356 [2021-11-19 14:04:59,182 INFO L226 Difference]: Without dead ends: 2252 [2021-11-19 14:04:59,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:04:59,184 INFO L933 BasicCegarLoop]: 689 mSDtfsCounter, 5251 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 2821 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5251 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 2821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:59,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5251 Valid, 2814 Invalid, 3185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 2821 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:04:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-19 14:04:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1428. [2021-11-19 14:04:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.407433881343817) internal successors, (1969), 1427 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1969 transitions. [2021-11-19 14:04:59,352 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1969 transitions. Word has length 110 [2021-11-19 14:04:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:59,352 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1969 transitions. [2021-11-19 14:04:59,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1969 transitions. [2021-11-19 14:04:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:04:59,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:59,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:59,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 14:04:59,355 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:04:59,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash 707210619, now seen corresponding path program 1 times [2021-11-19 14:04:59,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:59,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918769405] [2021-11-19 14:04:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:59,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:59,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:59,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918769405] [2021-11-19 14:04:59,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918769405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:59,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:59,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:59,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727126232] [2021-11-19 14:04:59,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:59,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:59,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:59,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:59,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:59,532 INFO L87 Difference]: Start difference. First operand 1428 states and 1969 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:02,618 INFO L93 Difference]: Finished difference Result 2554 states and 3508 transitions. [2021-11-19 14:05:02,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:05:02,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:02,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:02,624 INFO L225 Difference]: With dead ends: 2554 [2021-11-19 14:05:02,624 INFO L226 Difference]: Without dead ends: 2413 [2021-11-19 14:05:02,626 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 [2021-11-19 14:05:02,627 INFO L933 BasicCegarLoop]: 1218 mSDtfsCounter, 4257 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 5299 SdHoareTripleChecker+Invalid, 4362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:02,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4257 Valid, 5299 Invalid, 4362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 14:05:02,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-19 14:05:02,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-19 14:05:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4067190850607576) internal successors, (1968), 1427 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1968 transitions. [2021-11-19 14:05:02,897 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1968 transitions. Word has length 110 [2021-11-19 14:05:02,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:02,898 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1968 transitions. [2021-11-19 14:05:02,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1968 transitions. [2021-11-19 14:05:02,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:05:02,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:02,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:02,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 14:05:02,904 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:02,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:02,905 INFO L85 PathProgramCache]: Analyzing trace with hash -583741300, now seen corresponding path program 1 times [2021-11-19 14:05:02,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:02,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149879129] [2021-11-19 14:05:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:02,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:03,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:03,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149879129] [2021-11-19 14:05:03,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149879129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:03,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:03,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:03,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281470056] [2021-11-19 14:05:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:03,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:03,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:03,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:03,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:03,135 INFO L87 Difference]: Start difference. First operand 1428 states and 1968 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:05,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:05,868 INFO L93 Difference]: Finished difference Result 2518 states and 3443 transitions. [2021-11-19 14:05:05,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:05:05,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:05,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:05,873 INFO L225 Difference]: With dead ends: 2518 [2021-11-19 14:05:05,874 INFO L226 Difference]: Without dead ends: 2389 [2021-11-19 14:05:05,875 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 [2021-11-19 14:05:05,876 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 4184 mSDsluCounter, 3488 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4184 SdHoareTripleChecker+Valid, 4352 SdHoareTripleChecker+Invalid, 3865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:05,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4184 Valid, 4352 Invalid, 3865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:05:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-19 14:05:06,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-19 14:05:06,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4060042887776985) internal successors, (1967), 1427 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:06,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1967 transitions. [2021-11-19 14:05:06,120 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1967 transitions. Word has length 110 [2021-11-19 14:05:06,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:06,121 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1967 transitions. [2021-11-19 14:05:06,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:06,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1967 transitions. [2021-11-19 14:05:06,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:05:06,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:06,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:06,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 14:05:06,125 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:06,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:06,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1881631338, now seen corresponding path program 1 times [2021-11-19 14:05:06,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:06,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360048558] [2021-11-19 14:05:06,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:06,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:06,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:06,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360048558] [2021-11-19 14:05:06,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360048558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:06,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:06,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:06,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123495942] [2021-11-19 14:05:06,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:06,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:06,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:06,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:06,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:06,295 INFO L87 Difference]: Start difference. First operand 1428 states and 1967 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:08,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:08,954 INFO L93 Difference]: Finished difference Result 2581 states and 3536 transitions. [2021-11-19 14:05:08,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:05:08,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:08,961 INFO L225 Difference]: With dead ends: 2581 [2021-11-19 14:05:08,961 INFO L226 Difference]: Without dead ends: 2413 [2021-11-19 14:05:08,963 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 [2021-11-19 14:05:08,964 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 3147 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 3748 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3147 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 3780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:08,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3147 Valid, 4160 Invalid, 3780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3748 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:05:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-19 14:05:09,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-19 14:05:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.405289492494639) internal successors, (1966), 1427 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:09,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1966 transitions. [2021-11-19 14:05:09,248 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1966 transitions. Word has length 110 [2021-11-19 14:05:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:09,249 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1966 transitions. [2021-11-19 14:05:09,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1966 transitions. [2021-11-19 14:05:09,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:05:09,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:09,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:09,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 14:05:09,254 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:09,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:09,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1683197661, now seen corresponding path program 1 times [2021-11-19 14:05:09,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:09,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489683417] [2021-11-19 14:05:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:09,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:09,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:09,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489683417] [2021-11-19 14:05:09,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489683417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:09,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:09,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:09,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237325823] [2021-11-19 14:05:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:09,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:09,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:09,445 INFO L87 Difference]: Start difference. First operand 1428 states and 1966 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:12,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:12,392 INFO L93 Difference]: Finished difference Result 2562 states and 3512 transitions. [2021-11-19 14:05:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:05:12,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:12,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:12,399 INFO L225 Difference]: With dead ends: 2562 [2021-11-19 14:05:12,399 INFO L226 Difference]: Without dead ends: 2413 [2021-11-19 14:05:12,400 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 [2021-11-19 14:05:12,401 INFO L933 BasicCegarLoop]: 1166 mSDtfsCounter, 4353 mSDsluCounter, 3982 mSDsCounter, 0 mSdLazyCounter, 4080 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 5137 SdHoareTripleChecker+Invalid, 4119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:12,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4353 Valid, 5137 Invalid, 4119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4080 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:05:12,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-19 14:05:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-19 14:05:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4045746962115797) internal successors, (1965), 1427 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1965 transitions. [2021-11-19 14:05:12,690 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1965 transitions. Word has length 110 [2021-11-19 14:05:12,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:12,690 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1965 transitions. [2021-11-19 14:05:12,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1965 transitions. [2021-11-19 14:05:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:05:12,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:12,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:12,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-19 14:05:12,695 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash 656800929, now seen corresponding path program 1 times [2021-11-19 14:05:12,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:12,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835647110] [2021-11-19 14:05:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:12,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:12,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:12,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835647110] [2021-11-19 14:05:12,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835647110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:12,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:12,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:12,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777236530] [2021-11-19 14:05:12,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:12,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:12,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:12,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:12,872 INFO L87 Difference]: Start difference. First operand 1428 states and 1965 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:15,670 INFO L93 Difference]: Finished difference Result 2508 states and 3427 transitions. [2021-11-19 14:05:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:05:15,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:15,674 INFO L225 Difference]: With dead ends: 2508 [2021-11-19 14:05:15,674 INFO L226 Difference]: Without dead ends: 2389 [2021-11-19 14:05:15,675 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 [2021-11-19 14:05:15,676 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 4150 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 3991 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4150 SdHoareTripleChecker+Valid, 4754 SdHoareTripleChecker+Invalid, 4057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:15,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4150 Valid, 4754 Invalid, 4057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3991 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:05:15,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-19 14:05:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-19 14:05:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4038598999285203) internal successors, (1964), 1427 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1964 transitions. [2021-11-19 14:05:15,864 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1964 transitions. Word has length 110 [2021-11-19 14:05:15,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:15,865 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1964 transitions. [2021-11-19 14:05:15,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1964 transitions. [2021-11-19 14:05:15,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:05:15,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:15,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:15,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 14:05:15,868 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:15,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:15,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1792170171, now seen corresponding path program 1 times [2021-11-19 14:05:15,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:15,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79638083] [2021-11-19 14:05:15,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:15,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:16,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:16,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79638083] [2021-11-19 14:05:16,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79638083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:16,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:16,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:16,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720669503] [2021-11-19 14:05:16,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:16,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:16,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:16,022 INFO L87 Difference]: Start difference. First operand 1428 states and 1964 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:18,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:18,633 INFO L93 Difference]: Finished difference Result 2537 states and 3466 transitions. [2021-11-19 14:05:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:05:18,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:18,636 INFO L225 Difference]: With dead ends: 2537 [2021-11-19 14:05:18,636 INFO L226 Difference]: Without dead ends: 2389 [2021-11-19 14:05:18,637 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 [2021-11-19 14:05:18,638 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 4175 mSDsluCounter, 3732 mSDsCounter, 0 mSdLazyCounter, 3973 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4175 SdHoareTripleChecker+Valid, 4737 SdHoareTripleChecker+Invalid, 4039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:18,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4175 Valid, 4737 Invalid, 4039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3973 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:05:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-19 14:05:18,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-19 14:05:18,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4024303073624018) internal successors, (1962), 1427 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:18,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1962 transitions. [2021-11-19 14:05:18,902 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1962 transitions. Word has length 110 [2021-11-19 14:05:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:18,903 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1962 transitions. [2021-11-19 14:05:18,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1962 transitions. [2021-11-19 14:05:18,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:05:18,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:18,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:18,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 14:05:18,908 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:18,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:18,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1204907087, now seen corresponding path program 1 times [2021-11-19 14:05:18,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:18,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379445258] [2021-11-19 14:05:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:18,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:19,056 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:19,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379445258] [2021-11-19 14:05:19,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379445258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:19,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:19,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:19,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434223304] [2021-11-19 14:05:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:19,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:19,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:19,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:19,059 INFO L87 Difference]: Start difference. First operand 1428 states and 1962 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:21,661 INFO L93 Difference]: Finished difference Result 2615 states and 3577 transitions. [2021-11-19 14:05:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:05:21,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:21,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:21,664 INFO L225 Difference]: With dead ends: 2615 [2021-11-19 14:05:21,665 INFO L226 Difference]: Without dead ends: 2413 [2021-11-19 14:05:21,666 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 [2021-11-19 14:05:21,667 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 3143 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 3711 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3143 SdHoareTripleChecker+Valid, 4164 SdHoareTripleChecker+Invalid, 3743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:21,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3143 Valid, 4164 Invalid, 3743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3711 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:05:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-19 14:05:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-19 14:05:21,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.401000714796283) internal successors, (1960), 1427 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1960 transitions. [2021-11-19 14:05:21,931 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1960 transitions. Word has length 110 [2021-11-19 14:05:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:21,931 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1960 transitions. [2021-11-19 14:05:21,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1960 transitions. [2021-11-19 14:05:21,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:05:21,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:21,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:21,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 14:05:21,934 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:21,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:21,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1404228506, now seen corresponding path program 1 times [2021-11-19 14:05:21,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:21,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775405999] [2021-11-19 14:05:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:21,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:22,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:22,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775405999] [2021-11-19 14:05:22,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775405999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:22,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:22,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:22,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371199730] [2021-11-19 14:05:22,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:22,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:22,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:22,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:22,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:22,093 INFO L87 Difference]: Start difference. First operand 1428 states and 1960 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:24,858 INFO L93 Difference]: Finished difference Result 2609 states and 3571 transitions. [2021-11-19 14:05:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:05:24,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:24,862 INFO L225 Difference]: With dead ends: 2609 [2021-11-19 14:05:24,862 INFO L226 Difference]: Without dead ends: 2413 [2021-11-19 14:05:24,863 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 [2021-11-19 14:05:24,864 INFO L933 BasicCegarLoop]: 1164 mSDtfsCounter, 4365 mSDsluCounter, 3971 mSDsCounter, 0 mSdLazyCounter, 4037 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 5124 SdHoareTripleChecker+Invalid, 4076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:24,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4365 Valid, 5124 Invalid, 4076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4037 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:05:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-19 14:05:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-19 14:05:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3995711222301643) internal successors, (1958), 1427 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1958 transitions. [2021-11-19 14:05:25,069 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1958 transitions. Word has length 110 [2021-11-19 14:05:25,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:25,069 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1958 transitions. [2021-11-19 14:05:25,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1958 transitions. [2021-11-19 14:05:25,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:05:25,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:25,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:25,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-19 14:05:25,074 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:25,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash -550740200, now seen corresponding path program 1 times [2021-11-19 14:05:25,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:25,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995956500] [2021-11-19 14:05:25,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:25,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:25,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:25,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995956500] [2021-11-19 14:05:25,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995956500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:25,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:25,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:25,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326736623] [2021-11-19 14:05:25,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:25,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:25,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:25,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:25,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:25,235 INFO L87 Difference]: Start difference. First operand 1428 states and 1958 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:28,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:28,154 INFO L93 Difference]: Finished difference Result 2531 states and 3455 transitions. [2021-11-19 14:05:28,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:05:28,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:28,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:28,157 INFO L225 Difference]: With dead ends: 2531 [2021-11-19 14:05:28,158 INFO L226 Difference]: Without dead ends: 2389 [2021-11-19 14:05:28,159 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 [2021-11-19 14:05:28,159 INFO L933 BasicCegarLoop]: 1161 mSDtfsCounter, 4149 mSDsluCounter, 3980 mSDsCounter, 0 mSdLazyCounter, 4178 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4149 SdHoareTripleChecker+Valid, 5130 SdHoareTripleChecker+Invalid, 4244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 4178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:28,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4149 Valid, 5130 Invalid, 4244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 4178 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:05:28,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-19 14:05:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-19 14:05:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3981415296640458) internal successors, (1956), 1427 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1956 transitions. [2021-11-19 14:05:28,368 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1956 transitions. Word has length 110 [2021-11-19 14:05:28,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:28,368 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1956 transitions. [2021-11-19 14:05:28,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:28,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1956 transitions. [2021-11-19 14:05:28,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:05:28,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:28,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:28,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-19 14:05:28,373 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:28,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:28,374 INFO L85 PathProgramCache]: Analyzing trace with hash 915039500, now seen corresponding path program 1 times [2021-11-19 14:05:28,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:28,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205153878] [2021-11-19 14:05:28,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:28,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:28,543 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:28,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205153878] [2021-11-19 14:05:28,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205153878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:28,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:28,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:28,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432989831] [2021-11-19 14:05:28,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:28,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:28,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:28,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:28,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:28,546 INFO L87 Difference]: Start difference. First operand 1428 states and 1956 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:31,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:31,456 INFO L93 Difference]: Finished difference Result 2541 states and 3464 transitions. [2021-11-19 14:05:31,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:05:31,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:31,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:31,460 INFO L225 Difference]: With dead ends: 2541 [2021-11-19 14:05:31,460 INFO L226 Difference]: Without dead ends: 2389 [2021-11-19 14:05:31,461 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 [2021-11-19 14:05:31,462 INFO L933 BasicCegarLoop]: 1161 mSDtfsCounter, 4153 mSDsluCounter, 3974 mSDsCounter, 0 mSdLazyCounter, 4172 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4153 SdHoareTripleChecker+Valid, 5124 SdHoareTripleChecker+Invalid, 4238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 4172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:31,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4153 Valid, 5124 Invalid, 4238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 4172 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:05:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-19 14:05:31,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-19 14:05:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.396711937097927) internal successors, (1954), 1427 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1954 transitions. [2021-11-19 14:05:31,683 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1954 transitions. Word has length 110 [2021-11-19 14:05:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:31,683 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1954 transitions. [2021-11-19 14:05:31,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:31,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1954 transitions. [2021-11-19 14:05:31,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:05:31,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:31,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:31,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-19 14:05:31,687 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash -382850538, now seen corresponding path program 1 times [2021-11-19 14:05:31,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:31,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829168501] [2021-11-19 14:05:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:31,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:31,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:31,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829168501] [2021-11-19 14:05:31,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829168501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:31,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:31,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:31,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228136008] [2021-11-19 14:05:31,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:31,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:31,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:31,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:31,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:31,846 INFO L87 Difference]: Start difference. First operand 1428 states and 1954 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:34,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:34,764 INFO L93 Difference]: Finished difference Result 2631 states and 3592 transitions. [2021-11-19 14:05:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:05:34,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:34,767 INFO L225 Difference]: With dead ends: 2631 [2021-11-19 14:05:34,767 INFO L226 Difference]: Without dead ends: 2413 [2021-11-19 14:05:34,768 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 [2021-11-19 14:05:34,769 INFO L933 BasicCegarLoop]: 1207 mSDtfsCounter, 4221 mSDsluCounter, 4047 mSDsCounter, 0 mSdLazyCounter, 4214 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4221 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 4252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:34,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4221 Valid, 5243 Invalid, 4252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4214 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:05:34,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-19 14:05:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-19 14:05:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3952823445318083) internal successors, (1952), 1427 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:35,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1952 transitions. [2021-11-19 14:05:35,021 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1952 transitions. Word has length 110 [2021-11-19 14:05:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:35,021 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1952 transitions. [2021-11-19 14:05:35,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:35,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1952 transitions. [2021-11-19 14:05:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:05:35,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:35,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:35,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-19 14:05:35,026 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash -715976179, now seen corresponding path program 1 times [2021-11-19 14:05:35,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:35,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272859162] [2021-11-19 14:05:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:35,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:35,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:35,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272859162] [2021-11-19 14:05:35,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272859162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:35,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:35,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:35,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106454932] [2021-11-19 14:05:35,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:35,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:35,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:35,166 INFO L87 Difference]: Start difference. First operand 1428 states and 1952 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:37,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:37,824 INFO L93 Difference]: Finished difference Result 2783 states and 3795 transitions. [2021-11-19 14:05:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:05:37,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-19 14:05:37,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:37,827 INFO L225 Difference]: With dead ends: 2783 [2021-11-19 14:05:37,828 INFO L226 Difference]: Without dead ends: 2425 [2021-11-19 14:05:37,829 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 [2021-11-19 14:05:37,829 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 4458 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 3821 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4458 SdHoareTripleChecker+Valid, 4404 SdHoareTripleChecker+Invalid, 3849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:37,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4458 Valid, 4404 Invalid, 3849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3821 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:05:37,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-19 14:05:38,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1428. [2021-11-19 14:05:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3938527519656898) internal successors, (1950), 1427 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1950 transitions. [2021-11-19 14:05:38,051 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1950 transitions. Word has length 110 [2021-11-19 14:05:38,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:38,051 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1950 transitions. [2021-11-19 14:05:38,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1950 transitions. [2021-11-19 14:05:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 14:05:38,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:38,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:38,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-19 14:05:38,054 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:38,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:38,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1240220365, now seen corresponding path program 1 times [2021-11-19 14:05:38,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:38,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348434752] [2021-11-19 14:05:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:38,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:38,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:38,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348434752] [2021-11-19 14:05:38,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348434752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:38,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:38,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:38,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871394844] [2021-11-19 14:05:38,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:38,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:38,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:38,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:38,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:38,195 INFO L87 Difference]: Start difference. First operand 1428 states and 1950 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:40,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:40,821 INFO L93 Difference]: Finished difference Result 2447 states and 3310 transitions. [2021-11-19 14:05:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:05:40,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-19 14:05:40,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:40,824 INFO L225 Difference]: With dead ends: 2447 [2021-11-19 14:05:40,824 INFO L226 Difference]: Without dead ends: 2341 [2021-11-19 14:05:40,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:05:40,825 INFO L933 BasicCegarLoop]: 824 mSDtfsCounter, 4946 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 3209 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 3496 SdHoareTripleChecker+Invalid, 3383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 3209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:40,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 3496 Invalid, 3383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 3209 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:05:40,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-19 14:05:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-19 14:05:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3931379556826304) internal successors, (1949), 1427 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1949 transitions. [2021-11-19 14:05:41,065 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1949 transitions. Word has length 111 [2021-11-19 14:05:41,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:41,066 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1949 transitions. [2021-11-19 14:05:41,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:41,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1949 transitions. [2021-11-19 14:05:41,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:05:41,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:41,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:41,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-19 14:05:41,070 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:41,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:41,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1750032333, now seen corresponding path program 1 times [2021-11-19 14:05:41,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:41,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541738504] [2021-11-19 14:05:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:41,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:41,329 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:41,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541738504] [2021-11-19 14:05:41,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541738504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:41,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:41,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:05:41,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997932896] [2021-11-19 14:05:41,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:41,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:05:41,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:41,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:05:41,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:05:41,332 INFO L87 Difference]: Start difference. First operand 1428 states and 1949 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:46,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:46,217 INFO L93 Difference]: Finished difference Result 3154 states and 4276 transitions. [2021-11-19 14:05:46,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:05:46,218 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:05:46,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:46,245 INFO L225 Difference]: With dead ends: 3154 [2021-11-19 14:05:46,245 INFO L226 Difference]: Without dead ends: 3025 [2021-11-19 14:05:46,246 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 [2021-11-19 14:05:46,247 INFO L933 BasicCegarLoop]: 1068 mSDtfsCounter, 7910 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 5193 mSolverCounterSat, 802 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7910 SdHoareTripleChecker+Valid, 5660 SdHoareTripleChecker+Invalid, 5995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 802 IncrementalHoareTripleChecker+Valid, 5193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:46,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7910 Valid, 5660 Invalid, 5995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [802 Valid, 5193 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 14:05:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2021-11-19 14:05:46,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 1432. [2021-11-19 14:05:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1403 states have (on average 1.3920171062009978) internal successors, (1953), 1431 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1953 transitions. [2021-11-19 14:05:46,550 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1953 transitions. Word has length 112 [2021-11-19 14:05:46,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:46,550 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 1953 transitions. [2021-11-19 14:05:46,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1953 transitions. [2021-11-19 14:05:46,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:05:46,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:46,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:46,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-19 14:05:46,553 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:46,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1558151312, now seen corresponding path program 1 times [2021-11-19 14:05:46,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:46,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393861188] [2021-11-19 14:05:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:46,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:46,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:46,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393861188] [2021-11-19 14:05:46,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393861188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:46,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:46,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:46,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523404355] [2021-11-19 14:05:46,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:46,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:46,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:46,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:46,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:46,705 INFO L87 Difference]: Start difference. First operand 1432 states and 1953 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:49,699 INFO L93 Difference]: Finished difference Result 2457 states and 3322 transitions. [2021-11-19 14:05:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:05:49,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:05:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:49,702 INFO L225 Difference]: With dead ends: 2457 [2021-11-19 14:05:49,703 INFO L226 Difference]: Without dead ends: 2345 [2021-11-19 14:05:49,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:05:49,705 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 4855 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 3324 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4855 SdHoareTripleChecker+Valid, 3579 SdHoareTripleChecker+Invalid, 3495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:49,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4855 Valid, 3579 Invalid, 3495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3324 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:05:49,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2021-11-19 14:05:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2021-11-19 14:05:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1403 states have (on average 1.391304347826087) internal successors, (1952), 1431 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1952 transitions. [2021-11-19 14:05:49,990 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1952 transitions. Word has length 112 [2021-11-19 14:05:49,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:49,990 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 1952 transitions. [2021-11-19 14:05:49,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1952 transitions. [2021-11-19 14:05:49,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:05:49,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:49,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:49,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-19 14:05:49,993 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:49,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1896693420, now seen corresponding path program 1 times [2021-11-19 14:05:49,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:49,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129405627] [2021-11-19 14:05:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:49,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:50,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:50,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129405627] [2021-11-19 14:05:50,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129405627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:50,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:50,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:05:50,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519403355] [2021-11-19 14:05:50,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:50,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:05:50,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:05:50,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:05:50,245 INFO L87 Difference]: Start difference. First operand 1432 states and 1952 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:55,272 INFO L93 Difference]: Finished difference Result 3028 states and 4090 transitions. [2021-11-19 14:05:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:05:55,272 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:05:55,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:55,277 INFO L225 Difference]: With dead ends: 3028 [2021-11-19 14:05:55,277 INFO L226 Difference]: Without dead ends: 2916 [2021-11-19 14:05:55,279 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 [2021-11-19 14:05:55,280 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 8054 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 1062 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8054 SdHoareTripleChecker+Valid, 3904 SdHoareTripleChecker+Invalid, 4818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1062 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:55,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8054 Valid, 3904 Invalid, 4818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1062 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 14:05:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-11-19 14:05:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1436. [2021-11-19 14:05:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1407 states have (on average 1.3901918976545842) internal successors, (1956), 1435 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1956 transitions. [2021-11-19 14:05:55,695 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1956 transitions. Word has length 112 [2021-11-19 14:05:55,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:55,695 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 1956 transitions. [2021-11-19 14:05:55,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:55,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1956 transitions. [2021-11-19 14:05:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:05:55,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:55,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:55,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-19 14:05:55,700 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:55,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:55,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1908379433, now seen corresponding path program 1 times [2021-11-19 14:05:55,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:55,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443527142] [2021-11-19 14:05:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:55,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:55,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:55,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443527142] [2021-11-19 14:05:55,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443527142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:55,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:55,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:55,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130122032] [2021-11-19 14:05:55,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:55,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:05:55,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:55,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:05:55,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:05:55,851 INFO L87 Difference]: Start difference. First operand 1436 states and 1956 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:58,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:58,603 INFO L93 Difference]: Finished difference Result 2455 states and 3318 transitions. [2021-11-19 14:05:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:05:58,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:05:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:58,606 INFO L225 Difference]: With dead ends: 2455 [2021-11-19 14:05:58,606 INFO L226 Difference]: Without dead ends: 2345 [2021-11-19 14:05:58,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:05:58,607 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 4848 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 3299 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4848 SdHoareTripleChecker+Valid, 3596 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:58,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4848 Valid, 3596 Invalid, 3470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3299 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:05:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2021-11-19 14:05:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1436. [2021-11-19 14:05:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1407 states have (on average 1.3894811656005686) internal successors, (1955), 1435 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:58,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1955 transitions. [2021-11-19 14:05:58,896 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1955 transitions. Word has length 112 [2021-11-19 14:05:58,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:58,897 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 1955 transitions. [2021-11-19 14:05:58,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:58,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1955 transitions. [2021-11-19 14:05:58,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:05:58,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:58,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:58,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-19 14:05:58,900 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:05:58,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash -729427139, now seen corresponding path program 1 times [2021-11-19 14:05:58,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:58,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461044146] [2021-11-19 14:05:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:58,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:59,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:59,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461044146] [2021-11-19 14:05:59,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461044146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:59,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:59,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:05:59,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886630646] [2021-11-19 14:05:59,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:59,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:05:59,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:59,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:05:59,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:05:59,137 INFO L87 Difference]: Start difference. First operand 1436 states and 1955 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:03,785 INFO L93 Difference]: Finished difference Result 3024 states and 4084 transitions. [2021-11-19 14:06:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:06:03,786 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:03,789 INFO L225 Difference]: With dead ends: 3024 [2021-11-19 14:06:03,789 INFO L226 Difference]: Without dead ends: 2914 [2021-11-19 14:06:03,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:06:03,791 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 8154 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 3721 mSolverCounterSat, 1069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8154 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 4790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1069 IncrementalHoareTripleChecker+Valid, 3721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:03,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8154 Valid, 3880 Invalid, 4790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1069 Valid, 3721 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:06:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2021-11-19 14:06:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1440. [2021-11-19 14:06:04,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1411 states have (on average 1.3883770375620128) internal successors, (1959), 1439 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:04,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1959 transitions. [2021-11-19 14:06:04,130 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1959 transitions. Word has length 112 [2021-11-19 14:06:04,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:04,130 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 1959 transitions. [2021-11-19 14:06:04,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:04,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1959 transitions. [2021-11-19 14:06:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:04,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:04,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:04,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-19 14:06:04,133 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:04,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:04,134 INFO L85 PathProgramCache]: Analyzing trace with hash 606419033, now seen corresponding path program 1 times [2021-11-19 14:06:04,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:04,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401793926] [2021-11-19 14:06:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:04,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:04,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:04,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401793926] [2021-11-19 14:06:04,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401793926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:04,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:04,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:06:04,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948394770] [2021-11-19 14:06:04,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:04,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:06:04,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:04,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:06:04,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:06:04,276 INFO L87 Difference]: Start difference. First operand 1440 states and 1959 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:07,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:07,257 INFO L93 Difference]: Finished difference Result 2520 states and 3421 transitions. [2021-11-19 14:06:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:06:07,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:07,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:07,259 INFO L225 Difference]: With dead ends: 2520 [2021-11-19 14:06:07,259 INFO L226 Difference]: Without dead ends: 2397 [2021-11-19 14:06:07,260 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 [2021-11-19 14:06:07,261 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 4401 mSDsluCounter, 3293 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 3931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:07,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4401 Valid, 4325 Invalid, 3931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3850 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:06:07,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2021-11-19 14:06:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 1440. [2021-11-19 14:06:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1411 states have (on average 1.3876683203401843) internal successors, (1958), 1439 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1958 transitions. [2021-11-19 14:06:07,565 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1958 transitions. Word has length 112 [2021-11-19 14:06:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:07,566 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 1958 transitions. [2021-11-19 14:06:07,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1958 transitions. [2021-11-19 14:06:07,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:07,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:07,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:07,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-19 14:06:07,568 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:07,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:07,569 INFO L85 PathProgramCache]: Analyzing trace with hash 497794837, now seen corresponding path program 1 times [2021-11-19 14:06:07,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:07,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606169094] [2021-11-19 14:06:07,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:07,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:07,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:07,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606169094] [2021-11-19 14:06:07,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606169094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:07,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:07,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:06:07,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038972297] [2021-11-19 14:06:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:07,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:06:07,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:06:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:06:07,698 INFO L87 Difference]: Start difference. First operand 1440 states and 1958 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:10,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:10,459 INFO L93 Difference]: Finished difference Result 2461 states and 3321 transitions. [2021-11-19 14:06:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:06:10,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:10,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:10,461 INFO L225 Difference]: With dead ends: 2461 [2021-11-19 14:06:10,462 INFO L226 Difference]: Without dead ends: 2345 [2021-11-19 14:06:10,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:06:10,463 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 4924 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 3208 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4924 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:10,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4924 Valid, 3516 Invalid, 3380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3208 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:06:10,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2021-11-19 14:06:10,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1440. [2021-11-19 14:06:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1411 states have (on average 1.3869596031183558) internal successors, (1957), 1439 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:10,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1957 transitions. [2021-11-19 14:06:10,784 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1957 transitions. Word has length 112 [2021-11-19 14:06:10,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:10,785 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 1957 transitions. [2021-11-19 14:06:10,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:10,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1957 transitions. [2021-11-19 14:06:10,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:10,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:10,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:10,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-19 14:06:10,790 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:10,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:10,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1476130129, now seen corresponding path program 1 times [2021-11-19 14:06:10,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:10,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415783270] [2021-11-19 14:06:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:10,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:11,032 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:11,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415783270] [2021-11-19 14:06:11,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415783270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:11,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:11,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:06:11,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024871205] [2021-11-19 14:06:11,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:11,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:06:11,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:11,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:06:11,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:06:11,034 INFO L87 Difference]: Start difference. First operand 1440 states and 1957 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:16,084 INFO L93 Difference]: Finished difference Result 3180 states and 4296 transitions. [2021-11-19 14:06:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:06:16,091 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:16,093 INFO L225 Difference]: With dead ends: 3180 [2021-11-19 14:06:16,094 INFO L226 Difference]: Without dead ends: 3042 [2021-11-19 14:06:16,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:06:16,095 INFO L933 BasicCegarLoop]: 1072 mSDtfsCounter, 7649 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 4337 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7649 SdHoareTripleChecker+Valid, 4696 SdHoareTripleChecker+Invalid, 5140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 4337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:16,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7649 Valid, 4696 Invalid, 5140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 4337 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-19 14:06:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-11-19 14:06:16,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1444. [2021-11-19 14:06:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1415 states have (on average 1.3858657243816255) internal successors, (1961), 1443 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:16,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1961 transitions. [2021-11-19 14:06:16,438 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1961 transitions. Word has length 112 [2021-11-19 14:06:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:16,439 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 1961 transitions. [2021-11-19 14:06:16,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1961 transitions. [2021-11-19 14:06:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:16,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:16,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:16,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-19 14:06:16,443 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:16,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:16,443 INFO L85 PathProgramCache]: Analyzing trace with hash 865897012, now seen corresponding path program 1 times [2021-11-19 14:06:16,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:16,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587564176] [2021-11-19 14:06:16,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:16,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:16,683 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:16,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587564176] [2021-11-19 14:06:16,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587564176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:16,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:16,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:06:16,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883065298] [2021-11-19 14:06:16,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:16,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:06:16,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:16,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:06:16,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:06:16,686 INFO L87 Difference]: Start difference. First operand 1444 states and 1961 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:21,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:21,772 INFO L93 Difference]: Finished difference Result 3040 states and 4097 transitions. [2021-11-19 14:06:21,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:06:21,773 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:21,776 INFO L225 Difference]: With dead ends: 3040 [2021-11-19 14:06:21,776 INFO L226 Difference]: Without dead ends: 2924 [2021-11-19 14:06:21,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:06:21,778 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 8091 mSDsluCounter, 3060 mSDsCounter, 0 mSdLazyCounter, 3742 mSolverCounterSat, 1060 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8091 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 4802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1060 IncrementalHoareTripleChecker+Valid, 3742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:21,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8091 Valid, 3922 Invalid, 4802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1060 Valid, 3742 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-19 14:06:21,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2021-11-19 14:06:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1448. [2021-11-19 14:06:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1419 states have (on average 1.3847780126849893) internal successors, (1965), 1447 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1965 transitions. [2021-11-19 14:06:22,117 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1965 transitions. Word has length 112 [2021-11-19 14:06:22,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:22,117 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 1965 transitions. [2021-11-19 14:06:22,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:22,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1965 transitions. [2021-11-19 14:06:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:22,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:22,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:22,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-19 14:06:22,122 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:22,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:22,122 INFO L85 PathProgramCache]: Analyzing trace with hash -986214715, now seen corresponding path program 1 times [2021-11-19 14:06:22,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:22,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833442965] [2021-11-19 14:06:22,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:22,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:22,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:22,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833442965] [2021-11-19 14:06:22,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833442965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:22,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:22,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:06:22,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424282349] [2021-11-19 14:06:22,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:22,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:06:22,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:22,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:06:22,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:06:22,260 INFO L87 Difference]: Start difference. First operand 1448 states and 1965 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:25,305 INFO L93 Difference]: Finished difference Result 2461 states and 3319 transitions. [2021-11-19 14:06:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:06:25,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:25,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:25,308 INFO L225 Difference]: With dead ends: 2461 [2021-11-19 14:06:25,308 INFO L226 Difference]: Without dead ends: 2349 [2021-11-19 14:06:25,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:06:25,309 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 4852 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4852 SdHoareTripleChecker+Valid, 3563 SdHoareTripleChecker+Invalid, 3453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:25,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4852 Valid, 3563 Invalid, 3453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:06:25,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2021-11-19 14:06:25,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 1448. [2021-11-19 14:06:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1419 states have (on average 1.3840732910500353) internal successors, (1964), 1447 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1964 transitions. [2021-11-19 14:06:25,657 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1964 transitions. Word has length 112 [2021-11-19 14:06:25,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:25,657 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 1964 transitions. [2021-11-19 14:06:25,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:25,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1964 transitions. [2021-11-19 14:06:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:25,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:25,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:25,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-19 14:06:25,660 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:25,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:25,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1285263200, now seen corresponding path program 1 times [2021-11-19 14:06:25,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:25,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493239548] [2021-11-19 14:06:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:25,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:25,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:25,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493239548] [2021-11-19 14:06:25,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493239548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:25,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:25,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:06:25,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133409236] [2021-11-19 14:06:25,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:25,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:06:25,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:25,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:06:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:06:25,881 INFO L87 Difference]: Start difference. First operand 1448 states and 1964 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:30,788 INFO L93 Difference]: Finished difference Result 3032 states and 4087 transitions. [2021-11-19 14:06:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:06:30,789 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:30,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:30,792 INFO L225 Difference]: With dead ends: 3032 [2021-11-19 14:06:30,792 INFO L226 Difference]: Without dead ends: 2920 [2021-11-19 14:06:30,793 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 [2021-11-19 14:06:30,794 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 8107 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 3715 mSolverCounterSat, 1062 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8107 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 4777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1062 IncrementalHoareTripleChecker+Valid, 3715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:30,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8107 Valid, 3901 Invalid, 4777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1062 Valid, 3715 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:06:30,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2021-11-19 14:06:31,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1452. [2021-11-19 14:06:31,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1423 states have (on average 1.382993675333802) internal successors, (1968), 1451 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:31,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1968 transitions. [2021-11-19 14:06:31,171 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1968 transitions. Word has length 112 [2021-11-19 14:06:31,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:31,171 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 1968 transitions. [2021-11-19 14:06:31,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:31,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1968 transitions. [2021-11-19 14:06:31,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:31,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:31,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:31,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-19 14:06:31,174 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:31,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2038403798, now seen corresponding path program 1 times [2021-11-19 14:06:31,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:31,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002637913] [2021-11-19 14:06:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:31,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:31,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:31,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002637913] [2021-11-19 14:06:31,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002637913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:31,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:31,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:06:31,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957746431] [2021-11-19 14:06:31,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:31,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:06:31,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:31,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:06:31,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:06:31,317 INFO L87 Difference]: Start difference. First operand 1452 states and 1968 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:34,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:34,365 INFO L93 Difference]: Finished difference Result 2455 states and 3308 transitions. [2021-11-19 14:06:34,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:06:34,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:34,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:34,368 INFO L225 Difference]: With dead ends: 2455 [2021-11-19 14:06:34,368 INFO L226 Difference]: Without dead ends: 2349 [2021-11-19 14:06:34,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:06:34,369 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 4950 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 3153 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4950 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:34,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4950 Valid, 3471 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3153 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:06:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2021-11-19 14:06:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 1452. [2021-11-19 14:06:34,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1423 states have (on average 1.382290934645116) internal successors, (1967), 1451 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1967 transitions. [2021-11-19 14:06:34,728 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1967 transitions. Word has length 112 [2021-11-19 14:06:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:34,728 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 1967 transitions. [2021-11-19 14:06:34,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1967 transitions. [2021-11-19 14:06:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:34,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:34,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:34,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-19 14:06:34,733 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:34,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash -946721092, now seen corresponding path program 1 times [2021-11-19 14:06:34,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:34,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343909818] [2021-11-19 14:06:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:34,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:34,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:34,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343909818] [2021-11-19 14:06:34,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343909818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:34,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:34,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:06:34,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701905265] [2021-11-19 14:06:34,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:34,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:06:34,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:34,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:06:34,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:06:34,877 INFO L87 Difference]: Start difference. First operand 1452 states and 1967 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:37,766 INFO L93 Difference]: Finished difference Result 2461 states and 3316 transitions. [2021-11-19 14:06:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:06:37,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:37,769 INFO L225 Difference]: With dead ends: 2461 [2021-11-19 14:06:37,769 INFO L226 Difference]: Without dead ends: 2349 [2021-11-19 14:06:37,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:06:37,770 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 4955 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 3146 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 3318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:37,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4955 Valid, 3465 Invalid, 3318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3146 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:06:37,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2021-11-19 14:06:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 1452. [2021-11-19 14:06:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1423 states have (on average 1.38158819395643) internal successors, (1966), 1451 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1966 transitions. [2021-11-19 14:06:38,119 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1966 transitions. Word has length 112 [2021-11-19 14:06:38,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:38,120 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 1966 transitions. [2021-11-19 14:06:38,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1966 transitions. [2021-11-19 14:06:38,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:38,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:38,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:38,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-19 14:06:38,123 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:38,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:38,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1402965661, now seen corresponding path program 1 times [2021-11-19 14:06:38,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:38,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358236298] [2021-11-19 14:06:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:38,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:38,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:38,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358236298] [2021-11-19 14:06:38,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358236298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:38,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:38,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:06:38,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182691921] [2021-11-19 14:06:38,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:38,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:06:38,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:38,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:06:38,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:06:38,359 INFO L87 Difference]: Start difference. First operand 1452 states and 1966 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:43,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:43,771 INFO L93 Difference]: Finished difference Result 3170 states and 4281 transitions. [2021-11-19 14:06:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:06:43,772 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:43,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:43,775 INFO L225 Difference]: With dead ends: 3170 [2021-11-19 14:06:43,775 INFO L226 Difference]: Without dead ends: 3041 [2021-11-19 14:06:43,776 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 [2021-11-19 14:06:43,777 INFO L933 BasicCegarLoop]: 1039 mSDtfsCounter, 7661 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 4610 mSolverCounterSat, 811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7661 SdHoareTripleChecker+Valid, 4992 SdHoareTripleChecker+Invalid, 5421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 811 IncrementalHoareTripleChecker+Valid, 4610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:43,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7661 Valid, 4992 Invalid, 5421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [811 Valid, 4610 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 14:06:43,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-11-19 14:06:44,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 1456. [2021-11-19 14:06:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1427 states have (on average 1.3805185704274703) internal successors, (1970), 1455 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1970 transitions. [2021-11-19 14:06:44,167 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1970 transitions. Word has length 112 [2021-11-19 14:06:44,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:44,167 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 1970 transitions. [2021-11-19 14:06:44,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1970 transitions. [2021-11-19 14:06:44,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:44,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:44,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:44,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-19 14:06:44,170 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1650636604, now seen corresponding path program 1 times [2021-11-19 14:06:44,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:44,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539935862] [2021-11-19 14:06:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:44,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:44,307 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:44,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539935862] [2021-11-19 14:06:44,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539935862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:44,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:44,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:06:44,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532569697] [2021-11-19 14:06:44,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:44,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:06:44,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:44,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:06:44,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:06:44,309 INFO L87 Difference]: Start difference. First operand 1456 states and 1970 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:47,515 INFO L93 Difference]: Finished difference Result 2473 states and 3330 transitions. [2021-11-19 14:06:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:06:47,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:47,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:47,517 INFO L225 Difference]: With dead ends: 2473 [2021-11-19 14:06:47,517 INFO L226 Difference]: Without dead ends: 2353 [2021-11-19 14:06:47,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:06:47,520 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 4960 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:47,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4960 Valid, 3461 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3136 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:06:47,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-11-19 14:06:47,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1456. [2021-11-19 14:06:47,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1427 states have (on average 1.3791170287316048) internal successors, (1968), 1455 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1968 transitions. [2021-11-19 14:06:47,903 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1968 transitions. Word has length 112 [2021-11-19 14:06:47,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:47,903 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 1968 transitions. [2021-11-19 14:06:47,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:47,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1968 transitions. [2021-11-19 14:06:47,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:47,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:47,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:47,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-19 14:06:47,906 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:47,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash -793106707, now seen corresponding path program 1 times [2021-11-19 14:06:47,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:47,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229454441] [2021-11-19 14:06:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:47,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:48,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:48,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229454441] [2021-11-19 14:06:48,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229454441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:48,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:48,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:06:48,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615579570] [2021-11-19 14:06:48,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:48,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:06:48,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:06:48,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:06:48,140 INFO L87 Difference]: Start difference. First operand 1456 states and 1968 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:53,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:53,739 INFO L93 Difference]: Finished difference Result 3069 states and 4130 transitions. [2021-11-19 14:06:53,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:06:53,739 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:53,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:53,742 INFO L225 Difference]: With dead ends: 3069 [2021-11-19 14:06:53,743 INFO L226 Difference]: Without dead ends: 2947 [2021-11-19 14:06:53,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:06:53,744 INFO L933 BasicCegarLoop]: 858 mSDtfsCounter, 8089 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 3671 mSolverCounterSat, 1072 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8089 SdHoareTripleChecker+Valid, 3869 SdHoareTripleChecker+Invalid, 4743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1072 IncrementalHoareTripleChecker+Valid, 3671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:53,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8089 Valid, 3869 Invalid, 4743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1072 Valid, 3671 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 14:06:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2021-11-19 14:06:54,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1464. [2021-11-19 14:06:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1435 states have (on average 1.3770034843205574) internal successors, (1976), 1463 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1976 transitions. [2021-11-19 14:06:54,173 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1976 transitions. Word has length 112 [2021-11-19 14:06:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:54,173 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 1976 transitions. [2021-11-19 14:06:54,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:54,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1976 transitions. [2021-11-19 14:06:54,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:54,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:54,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:54,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-19 14:06:54,176 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:54,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1161208882, now seen corresponding path program 1 times [2021-11-19 14:06:54,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:54,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092444873] [2021-11-19 14:06:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:54,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:54,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:54,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092444873] [2021-11-19 14:06:54,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092444873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:54,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:54,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:06:54,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140514144] [2021-11-19 14:06:54,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:54,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:06:54,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:54,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:06:54,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:06:54,309 INFO L87 Difference]: Start difference. First operand 1464 states and 1976 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:57,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:57,286 INFO L93 Difference]: Finished difference Result 2475 states and 3327 transitions. [2021-11-19 14:06:57,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:06:57,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:06:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:57,289 INFO L225 Difference]: With dead ends: 2475 [2021-11-19 14:06:57,290 INFO L226 Difference]: Without dead ends: 2353 [2021-11-19 14:06:57,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:06:57,291 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 4988 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 3104 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4988 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:57,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4988 Valid, 3426 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3104 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:06:57,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-11-19 14:06:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1464. [2021-11-19 14:06:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1435 states have (on average 1.3756097560975609) internal successors, (1974), 1463 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1974 transitions. [2021-11-19 14:06:57,696 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1974 transitions. Word has length 112 [2021-11-19 14:06:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:57,696 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 1974 transitions. [2021-11-19 14:06:57,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:57,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1974 transitions. [2021-11-19 14:06:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:06:57,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:57,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:57,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-19 14:06:57,698 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:06:57,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:57,698 INFO L85 PathProgramCache]: Analyzing trace with hash -752363654, now seen corresponding path program 1 times [2021-11-19 14:06:57,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:57,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115669366] [2021-11-19 14:06:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:57,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:57,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:57,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115669366] [2021-11-19 14:06:57,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115669366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:57,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:57,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:06:57,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630711647] [2021-11-19 14:06:57,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:57,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:06:57,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:57,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:06:57,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:06:57,824 INFO L87 Difference]: Start difference. First operand 1464 states and 1974 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:00,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:00,892 INFO L93 Difference]: Finished difference Result 2561 states and 3450 transitions. [2021-11-19 14:07:00,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:07:00,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:00,895 INFO L225 Difference]: With dead ends: 2561 [2021-11-19 14:07:00,895 INFO L226 Difference]: Without dead ends: 2413 [2021-11-19 14:07:00,895 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 [2021-11-19 14:07:00,896 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 4598 mSDsluCounter, 3097 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4598 SdHoareTripleChecker+Valid, 4071 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:00,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4598 Valid, 4071 Invalid, 3655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:07:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-19 14:07:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1464. [2021-11-19 14:07:01,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1435 states have (on average 1.3742160278745645) internal successors, (1972), 1463 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1972 transitions. [2021-11-19 14:07:01,288 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1972 transitions. Word has length 112 [2021-11-19 14:07:01,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:01,289 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 1972 transitions. [2021-11-19 14:07:01,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:01,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1972 transitions. [2021-11-19 14:07:01,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:07:01,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:01,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:01,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-19 14:07:01,291 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:01,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1290310657, now seen corresponding path program 1 times [2021-11-19 14:07:01,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:01,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727118757] [2021-11-19 14:07:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:01,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:01,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:01,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727118757] [2021-11-19 14:07:01,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727118757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:01,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:01,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:07:01,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939697335] [2021-11-19 14:07:01,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:01,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:07:01,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:01,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:07:01,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:07:01,414 INFO L87 Difference]: Start difference. First operand 1464 states and 1972 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:04,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:04,410 INFO L93 Difference]: Finished difference Result 2469 states and 3318 transitions. [2021-11-19 14:07:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:07:04,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:04,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:04,413 INFO L225 Difference]: With dead ends: 2469 [2021-11-19 14:07:04,413 INFO L226 Difference]: Without dead ends: 2353 [2021-11-19 14:07:04,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:07:04,416 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 4802 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 3272 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 3272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:04,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 3604 Invalid, 3439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 3272 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:07:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-11-19 14:07:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1464. [2021-11-19 14:07:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1435 states have (on average 1.372822299651568) internal successors, (1970), 1463 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:04,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1970 transitions. [2021-11-19 14:07:04,819 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1970 transitions. Word has length 112 [2021-11-19 14:07:04,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:04,819 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 1970 transitions. [2021-11-19 14:07:04,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:04,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1970 transitions. [2021-11-19 14:07:04,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:07:04,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:04,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:04,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-19 14:07:04,821 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:04,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1351588119, now seen corresponding path program 1 times [2021-11-19 14:07:04,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:04,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932050588] [2021-11-19 14:07:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:04,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:05,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:05,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932050588] [2021-11-19 14:07:05,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932050588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:05,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:05,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:07:05,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496043541] [2021-11-19 14:07:05,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:05,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:07:05,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:05,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:07:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:07:05,045 INFO L87 Difference]: Start difference. First operand 1464 states and 1970 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:10,695 INFO L93 Difference]: Finished difference Result 3067 states and 4122 transitions. [2021-11-19 14:07:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:07:10,695 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:10,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:10,698 INFO L225 Difference]: With dead ends: 3067 [2021-11-19 14:07:10,698 INFO L226 Difference]: Without dead ends: 2947 [2021-11-19 14:07:10,699 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 [2021-11-19 14:07:10,699 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 7929 mSDsluCounter, 3893 mSDsCounter, 0 mSdLazyCounter, 4519 mSolverCounterSat, 1059 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7929 SdHoareTripleChecker+Valid, 4749 SdHoareTripleChecker+Invalid, 5578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1059 IncrementalHoareTripleChecker+Valid, 4519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:10,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7929 Valid, 4749 Invalid, 5578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1059 Valid, 4519 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 14:07:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2021-11-19 14:07:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1472. [2021-11-19 14:07:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1443 states have (on average 1.3707553707553708) internal successors, (1978), 1471 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1978 transitions. [2021-11-19 14:07:11,113 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1978 transitions. Word has length 112 [2021-11-19 14:07:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:11,113 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 1978 transitions. [2021-11-19 14:07:11,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1978 transitions. [2021-11-19 14:07:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:07:11,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:11,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:11,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-19 14:07:11,115 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1690130227, now seen corresponding path program 1 times [2021-11-19 14:07:11,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:11,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712215198] [2021-11-19 14:07:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:11,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:11,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:11,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712215198] [2021-11-19 14:07:11,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712215198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:11,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:11,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:07:11,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305760724] [2021-11-19 14:07:11,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:11,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:07:11,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:11,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:07:11,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:07:11,247 INFO L87 Difference]: Start difference. First operand 1472 states and 1978 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:14,309 INFO L93 Difference]: Finished difference Result 2473 states and 3318 transitions. [2021-11-19 14:07:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:07:14,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:14,312 INFO L225 Difference]: With dead ends: 2473 [2021-11-19 14:07:14,312 INFO L226 Difference]: Without dead ends: 2353 [2021-11-19 14:07:14,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:07:14,313 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 4918 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 3126 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4918 SdHoareTripleChecker+Valid, 3505 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 3126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:14,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4918 Valid, 3505 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 3126 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:07:14,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-11-19 14:07:14,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1472. [2021-11-19 14:07:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1443 states have (on average 1.3693693693693694) internal successors, (1976), 1471 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1976 transitions. [2021-11-19 14:07:14,737 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1976 transitions. Word has length 112 [2021-11-19 14:07:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:14,737 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 1976 transitions. [2021-11-19 14:07:14,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1976 transitions. [2021-11-19 14:07:14,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:07:14,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:14,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:14,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-19 14:07:14,739 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:14,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash -972979987, now seen corresponding path program 1 times [2021-11-19 14:07:14,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:14,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803686600] [2021-11-19 14:07:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:14,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:14,859 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:14,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803686600] [2021-11-19 14:07:14,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803686600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:14,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:14,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:07:14,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219949656] [2021-11-19 14:07:14,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:14,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:07:14,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:14,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:07:14,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:07:14,862 INFO L87 Difference]: Start difference. First operand 1472 states and 1976 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:18,042 INFO L93 Difference]: Finished difference Result 2569 states and 3451 transitions. [2021-11-19 14:07:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:07:18,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:18,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:18,046 INFO L225 Difference]: With dead ends: 2569 [2021-11-19 14:07:18,046 INFO L226 Difference]: Without dead ends: 2421 [2021-11-19 14:07:18,047 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 [2021-11-19 14:07:18,047 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 3062 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 3555 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3062 SdHoareTripleChecker+Valid, 4091 SdHoareTripleChecker+Invalid, 3611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:18,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3062 Valid, 4091 Invalid, 3611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3555 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:07:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2021-11-19 14:07:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1472. [2021-11-19 14:07:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1443 states have (on average 1.367983367983368) internal successors, (1974), 1471 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1974 transitions. [2021-11-19 14:07:18,500 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1974 transitions. Word has length 112 [2021-11-19 14:07:18,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:18,500 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 1974 transitions. [2021-11-19 14:07:18,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:18,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1974 transitions. [2021-11-19 14:07:18,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:07:18,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:18,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:18,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-19 14:07:18,502 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:18,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1329319844, now seen corresponding path program 1 times [2021-11-19 14:07:18,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:18,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952083920] [2021-11-19 14:07:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:18,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:18,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:18,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952083920] [2021-11-19 14:07:18,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952083920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:18,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:18,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:07:18,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869932398] [2021-11-19 14:07:18,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:18,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:07:18,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:18,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:07:18,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:07:18,616 INFO L87 Difference]: Start difference. First operand 1472 states and 1974 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:22,037 INFO L93 Difference]: Finished difference Result 2715 states and 3640 transitions. [2021-11-19 14:07:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:07:22,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:22,041 INFO L225 Difference]: With dead ends: 2715 [2021-11-19 14:07:22,041 INFO L226 Difference]: Without dead ends: 2481 [2021-11-19 14:07:22,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:07:22,042 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 4357 mSDsluCounter, 3424 mSDsCounter, 0 mSdLazyCounter, 3815 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4357 SdHoareTripleChecker+Valid, 4544 SdHoareTripleChecker+Invalid, 3862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:22,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4357 Valid, 4544 Invalid, 3862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3815 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:07:22,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2021-11-19 14:07:22,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 1472. [2021-11-19 14:07:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1443 states have (on average 1.3665973665973665) internal successors, (1972), 1471 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1972 transitions. [2021-11-19 14:07:22,503 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1972 transitions. Word has length 112 [2021-11-19 14:07:22,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:22,503 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 1972 transitions. [2021-11-19 14:07:22,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:22,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1972 transitions. [2021-11-19 14:07:22,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:07:22,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:22,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:22,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-19 14:07:22,506 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:22,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1858638162, now seen corresponding path program 1 times [2021-11-19 14:07:22,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:22,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714293145] [2021-11-19 14:07:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:22,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:22,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:22,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714293145] [2021-11-19 14:07:22,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714293145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:22,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:22,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:07:22,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637549849] [2021-11-19 14:07:22,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:22,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:07:22,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:07:22,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:07:22,645 INFO L87 Difference]: Start difference. First operand 1472 states and 1972 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:26,125 INFO L93 Difference]: Finished difference Result 2581 states and 3461 transitions. [2021-11-19 14:07:26,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:07:26,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:26,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:26,128 INFO L225 Difference]: With dead ends: 2581 [2021-11-19 14:07:26,128 INFO L226 Difference]: Without dead ends: 2421 [2021-11-19 14:07:26,129 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 [2021-11-19 14:07:26,129 INFO L933 BasicCegarLoop]: 1188 mSDtfsCounter, 4258 mSDsluCounter, 4041 mSDsCounter, 0 mSdLazyCounter, 3968 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4258 SdHoareTripleChecker+Valid, 5218 SdHoareTripleChecker+Invalid, 4034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:26,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4258 Valid, 5218 Invalid, 4034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3968 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:07:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2021-11-19 14:07:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1472. [2021-11-19 14:07:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1443 states have (on average 1.365211365211365) internal successors, (1970), 1471 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1970 transitions. [2021-11-19 14:07:26,574 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1970 transitions. Word has length 112 [2021-11-19 14:07:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:26,574 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 1970 transitions. [2021-11-19 14:07:26,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:26,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1970 transitions. [2021-11-19 14:07:26,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:07:26,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:26,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:26,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-19 14:07:26,576 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:26,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:26,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2027483906, now seen corresponding path program 1 times [2021-11-19 14:07:26,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:26,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167600075] [2021-11-19 14:07:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:26,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:26,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:26,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167600075] [2021-11-19 14:07:26,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167600075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:26,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:26,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:07:26,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461937441] [2021-11-19 14:07:26,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:26,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:07:26,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:26,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:07:26,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:07:26,708 INFO L87 Difference]: Start difference. First operand 1472 states and 1970 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:30,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:30,088 INFO L93 Difference]: Finished difference Result 2479 states and 3317 transitions. [2021-11-19 14:07:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:07:30,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:30,091 INFO L225 Difference]: With dead ends: 2479 [2021-11-19 14:07:30,091 INFO L226 Difference]: Without dead ends: 2353 [2021-11-19 14:07:30,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:07:30,092 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 4762 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4762 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 3400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:30,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4762 Valid, 3672 Invalid, 3400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:07:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-11-19 14:07:30,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1472. [2021-11-19 14:07:30,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1443 states have (on average 1.363825363825364) internal successors, (1968), 1471 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1968 transitions. [2021-11-19 14:07:30,538 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1968 transitions. Word has length 112 [2021-11-19 14:07:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:30,539 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 1968 transitions. [2021-11-19 14:07:30,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:30,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1968 transitions. [2021-11-19 14:07:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:07:30,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:30,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:30,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-19 14:07:30,541 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:30,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:30,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2012055413, now seen corresponding path program 1 times [2021-11-19 14:07:30,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:30,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195385188] [2021-11-19 14:07:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:30,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:30,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:30,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195385188] [2021-11-19 14:07:30,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195385188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:30,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:30,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:07:30,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943774383] [2021-11-19 14:07:30,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:30,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:07:30,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:30,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:07:30,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:07:30,645 INFO L87 Difference]: Start difference. First operand 1472 states and 1968 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:33,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:33,937 INFO L93 Difference]: Finished difference Result 2479 states and 3315 transitions. [2021-11-19 14:07:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:07:33,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:33,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:33,947 INFO L225 Difference]: With dead ends: 2479 [2021-11-19 14:07:33,947 INFO L226 Difference]: Without dead ends: 2353 [2021-11-19 14:07:33,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:07:33,948 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 4759 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 3230 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 3396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:33,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 3672 Invalid, 3396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3230 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:07:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-11-19 14:07:34,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1472. [2021-11-19 14:07:34,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1443 states have (on average 1.3624393624393625) internal successors, (1966), 1471 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:34,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1966 transitions. [2021-11-19 14:07:34,432 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1966 transitions. Word has length 112 [2021-11-19 14:07:34,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:34,432 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 1966 transitions. [2021-11-19 14:07:34,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1966 transitions. [2021-11-19 14:07:34,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:07:34,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:34,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:34,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-19 14:07:34,434 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash 38130447, now seen corresponding path program 1 times [2021-11-19 14:07:34,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:34,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585894358] [2021-11-19 14:07:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:34,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:34,617 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:34,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585894358] [2021-11-19 14:07:34,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585894358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:34,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:34,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:07:34,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131605476] [2021-11-19 14:07:34,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:34,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:07:34,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:34,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:07:34,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:07:34,618 INFO L87 Difference]: Start difference. First operand 1472 states and 1966 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:40,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:40,684 INFO L93 Difference]: Finished difference Result 3263 states and 4372 transitions. [2021-11-19 14:07:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:07:40,684 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:40,687 INFO L225 Difference]: With dead ends: 3263 [2021-11-19 14:07:40,687 INFO L226 Difference]: Without dead ends: 3103 [2021-11-19 14:07:40,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:07:40,689 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 7509 mSDsluCounter, 3671 mSDsCounter, 0 mSdLazyCounter, 4260 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7509 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 5056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 4260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:40,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7509 Valid, 4747 Invalid, 5056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 4260 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 14:07:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2021-11-19 14:07:41,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 1480. [2021-11-19 14:07:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1451 states have (on average 1.3604410751206064) internal successors, (1974), 1479 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1974 transitions. [2021-11-19 14:07:41,136 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1974 transitions. Word has length 112 [2021-11-19 14:07:41,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:41,136 INFO L470 AbstractCegarLoop]: Abstraction has 1480 states and 1974 transitions. [2021-11-19 14:07:41,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:41,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1974 transitions. [2021-11-19 14:07:41,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:07:41,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:41,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:41,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-19 14:07:41,139 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:41,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1914809708, now seen corresponding path program 1 times [2021-11-19 14:07:41,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:41,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992957401] [2021-11-19 14:07:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:41,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:41,353 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:41,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992957401] [2021-11-19 14:07:41,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992957401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:41,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:41,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:07:41,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462361791] [2021-11-19 14:07:41,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:41,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:07:41,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:41,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:07:41,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:07:41,355 INFO L87 Difference]: Start difference. First operand 1480 states and 1974 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:47,045 INFO L93 Difference]: Finished difference Result 3087 states and 4130 transitions. [2021-11-19 14:07:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:07:47,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:47,048 INFO L225 Difference]: With dead ends: 3087 [2021-11-19 14:07:47,048 INFO L226 Difference]: Without dead ends: 2961 [2021-11-19 14:07:47,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:07:47,050 INFO L933 BasicCegarLoop]: 913 mSDtfsCounter, 7834 mSDsluCounter, 3157 mSDsCounter, 0 mSdLazyCounter, 3758 mSolverCounterSat, 1031 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7834 SdHoareTripleChecker+Valid, 4058 SdHoareTripleChecker+Invalid, 4789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1031 IncrementalHoareTripleChecker+Valid, 3758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:47,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7834 Valid, 4058 Invalid, 4789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1031 Valid, 3758 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-19 14:07:47,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-11-19 14:07:47,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1488. [2021-11-19 14:07:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1459 states have (on average 1.3584647018505827) internal successors, (1982), 1487 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:47,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1982 transitions. [2021-11-19 14:07:47,486 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1982 transitions. Word has length 112 [2021-11-19 14:07:47,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:47,486 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 1982 transitions. [2021-11-19 14:07:47,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:47,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1982 transitions. [2021-11-19 14:07:47,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:07:47,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:47,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:47,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-19 14:07:47,489 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:47,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:47,490 INFO L85 PathProgramCache]: Analyzing trace with hash 529413222, now seen corresponding path program 1 times [2021-11-19 14:07:47,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:47,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945223292] [2021-11-19 14:07:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:47,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:47,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:47,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945223292] [2021-11-19 14:07:47,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945223292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:47,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:47,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:07:47,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072916781] [2021-11-19 14:07:47,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:47,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:07:47,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:47,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:07:47,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:07:47,609 INFO L87 Difference]: Start difference. First operand 1488 states and 1982 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:50,791 INFO L93 Difference]: Finished difference Result 2481 states and 3312 transitions. [2021-11-19 14:07:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:07:50,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 14:07:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:50,795 INFO L225 Difference]: With dead ends: 2481 [2021-11-19 14:07:50,795 INFO L226 Difference]: Without dead ends: 2361 [2021-11-19 14:07:50,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:07:50,796 INFO L933 BasicCegarLoop]: 865 mSDtfsCounter, 4774 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4774 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:50,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4774 Valid, 3645 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:07:50,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2021-11-19 14:07:51,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 1488. [2021-11-19 14:07:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1459 states have (on average 1.35709389993146) internal successors, (1980), 1487 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:51,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1980 transitions. [2021-11-19 14:07:51,285 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1980 transitions. Word has length 112 [2021-11-19 14:07:51,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:51,285 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 1980 transitions. [2021-11-19 14:07:51,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:51,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1980 transitions. [2021-11-19 14:07:51,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 14:07:51,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:51,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:51,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-19 14:07:51,288 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1879261968, now seen corresponding path program 1 times [2021-11-19 14:07:51,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:51,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623766398] [2021-11-19 14:07:51,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:51,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:51,398 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:51,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623766398] [2021-11-19 14:07:51,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623766398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:51,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:51,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:07:51,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900465681] [2021-11-19 14:07:51,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:51,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:07:51,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:51,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:07:51,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:07:51,401 INFO L87 Difference]: Start difference. First operand 1488 states and 1980 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:54,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:54,780 INFO L93 Difference]: Finished difference Result 2558 states and 3414 transitions. [2021-11-19 14:07:54,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:07:54,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-19 14:07:54,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:54,783 INFO L225 Difference]: With dead ends: 2558 [2021-11-19 14:07:54,783 INFO L226 Difference]: Without dead ends: 2429 [2021-11-19 14:07:54,784 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 [2021-11-19 14:07:54,784 INFO L933 BasicCegarLoop]: 1035 mSDtfsCounter, 2960 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 3717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:54,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2960 Valid, 4299 Invalid, 3717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:07:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2021-11-19 14:07:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 1484. [2021-11-19 14:07:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1455 states have (on average 1.3573883161512028) internal successors, (1975), 1483 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 1975 transitions. [2021-11-19 14:07:55,255 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 1975 transitions. Word has length 113 [2021-11-19 14:07:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:55,256 INFO L470 AbstractCegarLoop]: Abstraction has 1484 states and 1975 transitions. [2021-11-19 14:07:55,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 1975 transitions. [2021-11-19 14:07:55,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 14:07:55,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:55,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:55,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-19 14:07:55,258 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:55,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash -650697781, now seen corresponding path program 1 times [2021-11-19 14:07:55,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:55,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406966830] [2021-11-19 14:07:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:55,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:55,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:55,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406966830] [2021-11-19 14:07:55,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406966830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:55,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:55,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:07:55,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184008420] [2021-11-19 14:07:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:55,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:07:55,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:07:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:07:55,384 INFO L87 Difference]: Start difference. First operand 1484 states and 1975 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:58,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:58,637 INFO L93 Difference]: Finished difference Result 2469 states and 3294 transitions. [2021-11-19 14:07:58,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:07:58,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-19 14:07:58,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:58,640 INFO L225 Difference]: With dead ends: 2469 [2021-11-19 14:07:58,640 INFO L226 Difference]: Without dead ends: 2357 [2021-11-19 14:07:58,641 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 [2021-11-19 14:07:58,641 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 3114 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 3362 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:58,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3114 Valid, 3782 Invalid, 3470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3362 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:07:58,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2021-11-19 14:07:59,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 1480. [2021-11-19 14:07:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1451 states have (on average 1.3576843556168159) internal successors, (1970), 1479 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1970 transitions. [2021-11-19 14:07:59,114 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1970 transitions. Word has length 113 [2021-11-19 14:07:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:59,114 INFO L470 AbstractCegarLoop]: Abstraction has 1480 states and 1970 transitions. [2021-11-19 14:07:59,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:59,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1970 transitions. [2021-11-19 14:07:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 14:07:59,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:59,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:59,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-19 14:07:59,116 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:07:59,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1100476011, now seen corresponding path program 1 times [2021-11-19 14:07:59,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:59,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579358473] [2021-11-19 14:07:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:59,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:59,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:59,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579358473] [2021-11-19 14:07:59,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579358473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:07:59,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:07:59,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:07:59,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233007151] [2021-11-19 14:07:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:07:59,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:07:59,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:07:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:07:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:07:59,436 INFO L87 Difference]: Start difference. First operand 1480 states and 1970 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:01,788 INFO L93 Difference]: Finished difference Result 2176 states and 2738 transitions. [2021-11-19 14:08:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:08:01,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-19 14:08:01,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:01,790 INFO L225 Difference]: With dead ends: 2176 [2021-11-19 14:08:01,790 INFO L226 Difference]: Without dead ends: 1686 [2021-11-19 14:08:01,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:08:01,792 INFO L933 BasicCegarLoop]: 1408 mSDtfsCounter, 4641 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 3909 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:01,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4641 Valid, 3909 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:08:01,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2021-11-19 14:08:02,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1094. [2021-11-19 14:08:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1072 states have (on average 1.353544776119403) internal successors, (1451), 1093 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1451 transitions. [2021-11-19 14:08:02,166 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1451 transitions. Word has length 113 [2021-11-19 14:08:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:02,166 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1451 transitions. [2021-11-19 14:08:02,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1451 transitions. [2021-11-19 14:08:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 14:08:02,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:02,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:02,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-19 14:08:02,168 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:02,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:02,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1950833807, now seen corresponding path program 1 times [2021-11-19 14:08:02,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:02,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650760455] [2021-11-19 14:08:02,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:02,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:02,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:02,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:02,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650760455] [2021-11-19 14:08:02,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650760455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:02,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:02,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:08:02,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543164704] [2021-11-19 14:08:02,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:02,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:08:02,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:02,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:08:02,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:08:02,309 INFO L87 Difference]: Start difference. First operand 1094 states and 1451 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:04,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:04,776 INFO L93 Difference]: Finished difference Result 1922 states and 2558 transitions. [2021-11-19 14:08:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:08:04,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-19 14:08:04,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:04,779 INFO L225 Difference]: With dead ends: 1922 [2021-11-19 14:08:04,779 INFO L226 Difference]: Without dead ends: 1800 [2021-11-19 14:08:04,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:08:04,784 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 2924 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2924 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:04,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2924 Valid, 2449 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:08:04,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2021-11-19 14:08:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1086. [2021-11-19 14:08:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1064 states have (on average 1.3543233082706767) internal successors, (1441), 1085 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1441 transitions. [2021-11-19 14:08:05,184 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1441 transitions. Word has length 113 [2021-11-19 14:08:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:05,184 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 1441 transitions. [2021-11-19 14:08:05,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:05,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1441 transitions. [2021-11-19 14:08:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 14:08:05,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:05,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:05,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-19 14:08:05,186 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:05,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:05,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1260578693, now seen corresponding path program 1 times [2021-11-19 14:08:05,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:05,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183151307] [2021-11-19 14:08:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:05,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:05,636 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:05,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183151307] [2021-11-19 14:08:05,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183151307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:05,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:05,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:08:05,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419228128] [2021-11-19 14:08:05,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:05,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:08:05,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:05,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:08:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:08:05,638 INFO L87 Difference]: Start difference. First operand 1086 states and 1441 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:08,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:08,400 INFO L93 Difference]: Finished difference Result 2176 states and 2911 transitions. [2021-11-19 14:08:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:08:08,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-19 14:08:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:08,403 INFO L225 Difference]: With dead ends: 2176 [2021-11-19 14:08:08,403 INFO L226 Difference]: Without dead ends: 2048 [2021-11-19 14:08:08,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:08:08,404 INFO L933 BasicCegarLoop]: 1011 mSDtfsCounter, 4662 mSDsluCounter, 4658 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4662 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:08,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4662 Valid, 5599 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:08:08,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2021-11-19 14:08:08,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1062. [2021-11-19 14:08:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1040 states have (on average 1.3509615384615385) internal successors, (1405), 1061 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1405 transitions. [2021-11-19 14:08:08,801 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1405 transitions. Word has length 113 [2021-11-19 14:08:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:08,802 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 1405 transitions. [2021-11-19 14:08:08,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1405 transitions. [2021-11-19 14:08:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 14:08:08,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:08,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:08,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-19 14:08:08,803 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:08,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1222904865, now seen corresponding path program 1 times [2021-11-19 14:08:08,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:08,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044054568] [2021-11-19 14:08:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:08,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:08,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:08,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044054568] [2021-11-19 14:08:08,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044054568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:08,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:08,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:08:08,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452847203] [2021-11-19 14:08:08,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:08,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:08:08,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:08,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:08:08,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:08:08,968 INFO L87 Difference]: Start difference. First operand 1062 states and 1405 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:11,643 INFO L93 Difference]: Finished difference Result 1896 states and 2519 transitions. [2021-11-19 14:08:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:08:11,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-19 14:08:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:11,645 INFO L225 Difference]: With dead ends: 1896 [2021-11-19 14:08:11,646 INFO L226 Difference]: Without dead ends: 1776 [2021-11-19 14:08:11,646 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 [2021-11-19 14:08:11,647 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 2772 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2772 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 2194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:11,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2772 Valid, 2450 Invalid, 2194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:08:11,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-11-19 14:08:12,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1054. [2021-11-19 14:08:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1032 states have (on average 1.3517441860465116) internal successors, (1395), 1053 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1395 transitions. [2021-11-19 14:08:12,040 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1395 transitions. Word has length 113 [2021-11-19 14:08:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:12,040 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1395 transitions. [2021-11-19 14:08:12,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:12,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1395 transitions. [2021-11-19 14:08:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 14:08:12,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:12,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:12,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-19 14:08:12,042 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:12,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:12,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1537778661, now seen corresponding path program 1 times [2021-11-19 14:08:12,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:12,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495961810] [2021-11-19 14:08:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:12,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:12,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:12,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495961810] [2021-11-19 14:08:12,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495961810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:12,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:12,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:08:12,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229937879] [2021-11-19 14:08:12,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:12,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:08:12,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:12,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:08:12,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:08:12,180 INFO L87 Difference]: Start difference. First operand 1054 states and 1395 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:14,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:14,757 INFO L93 Difference]: Finished difference Result 1902 states and 2524 transitions. [2021-11-19 14:08:14,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:08:14,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-19 14:08:14,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:14,759 INFO L225 Difference]: With dead ends: 1902 [2021-11-19 14:08:14,759 INFO L226 Difference]: Without dead ends: 1776 [2021-11-19 14:08:14,760 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 [2021-11-19 14:08:14,760 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 2724 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2724 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:14,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2724 Valid, 2484 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:08:14,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-11-19 14:08:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1046. [2021-11-19 14:08:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1024 states have (on average 1.3525390625) internal successors, (1385), 1045 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:15,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1385 transitions. [2021-11-19 14:08:15,187 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1385 transitions. Word has length 113 [2021-11-19 14:08:15,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:15,188 INFO L470 AbstractCegarLoop]: Abstraction has 1046 states and 1385 transitions. [2021-11-19 14:08:15,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:15,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1385 transitions. [2021-11-19 14:08:15,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 14:08:15,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:15,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:15,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-19 14:08:15,189 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:15,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:15,190 INFO L85 PathProgramCache]: Analyzing trace with hash 217968531, now seen corresponding path program 1 times [2021-11-19 14:08:15,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:15,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480065580] [2021-11-19 14:08:15,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:15,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:15,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:15,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480065580] [2021-11-19 14:08:15,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480065580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:15,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:15,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:08:15,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204151668] [2021-11-19 14:08:15,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:15,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:08:15,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:15,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:08:15,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:08:15,316 INFO L87 Difference]: Start difference. First operand 1046 states and 1385 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:17,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:17,900 INFO L93 Difference]: Finished difference Result 1960 states and 2610 transitions. [2021-11-19 14:08:17,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:08:17,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-19 14:08:17,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:17,903 INFO L225 Difference]: With dead ends: 1960 [2021-11-19 14:08:17,903 INFO L226 Difference]: Without dead ends: 1800 [2021-11-19 14:08:17,904 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 [2021-11-19 14:08:17,905 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 2565 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2565 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:17,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2565 Valid, 2787 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:08:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2021-11-19 14:08:18,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1038. [2021-11-19 14:08:18,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1016 states have (on average 1.3533464566929134) internal successors, (1375), 1037 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1375 transitions. [2021-11-19 14:08:18,310 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1375 transitions. Word has length 113 [2021-11-19 14:08:18,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:18,311 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1375 transitions. [2021-11-19 14:08:18,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:18,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1375 transitions. [2021-11-19 14:08:18,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:08:18,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:18,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:18,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-19 14:08:18,312 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:18,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:18,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1716325617, now seen corresponding path program 1 times [2021-11-19 14:08:18,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:18,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094752650] [2021-11-19 14:08:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:18,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:18,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:18,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094752650] [2021-11-19 14:08:18,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094752650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:18,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:18,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:08:18,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066268446] [2021-11-19 14:08:18,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:18,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:08:18,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:18,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:08:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:08:18,428 INFO L87 Difference]: Start difference. First operand 1038 states and 1375 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:21,040 INFO L93 Difference]: Finished difference Result 1794 states and 2357 transitions. [2021-11-19 14:08:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:08:21,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:08:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:21,042 INFO L225 Difference]: With dead ends: 1794 [2021-11-19 14:08:21,042 INFO L226 Difference]: Without dead ends: 1690 [2021-11-19 14:08:21,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:08:21,043 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 2739 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:21,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2739 Valid, 2177 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:08:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-11-19 14:08:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1038. [2021-11-19 14:08:21,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1016 states have (on average 1.3513779527559056) internal successors, (1373), 1037 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1373 transitions. [2021-11-19 14:08:21,465 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1373 transitions. Word has length 114 [2021-11-19 14:08:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:21,465 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1373 transitions. [2021-11-19 14:08:21,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1373 transitions. [2021-11-19 14:08:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:08:21,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:21,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:21,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-19 14:08:21,467 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:21,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:21,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1958502362, now seen corresponding path program 1 times [2021-11-19 14:08:21,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:21,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538064536] [2021-11-19 14:08:21,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:21,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:21,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:21,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538064536] [2021-11-19 14:08:21,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538064536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:21,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:21,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:08:21,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146185031] [2021-11-19 14:08:21,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:21,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:08:21,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:21,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:08:21,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:08:21,661 INFO L87 Difference]: Start difference. First operand 1038 states and 1373 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:26,312 INFO L93 Difference]: Finished difference Result 2324 states and 3069 transitions. [2021-11-19 14:08:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:08:26,312 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:08:26,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:26,314 INFO L225 Difference]: With dead ends: 2324 [2021-11-19 14:08:26,314 INFO L226 Difference]: Without dead ends: 2216 [2021-11-19 14:08:26,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:08:26,315 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 4874 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4874 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:26,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4874 Valid, 2285 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:08:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2021-11-19 14:08:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 1046. [2021-11-19 14:08:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1024 states have (on average 1.3486328125) internal successors, (1381), 1045 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:26,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1381 transitions. [2021-11-19 14:08:26,792 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1381 transitions. Word has length 114 [2021-11-19 14:08:26,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:26,792 INFO L470 AbstractCegarLoop]: Abstraction has 1046 states and 1381 transitions. [2021-11-19 14:08:26,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:26,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1381 transitions. [2021-11-19 14:08:26,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:08:26,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:26,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:26,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-19 14:08:26,794 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:26,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:26,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1309808286, now seen corresponding path program 1 times [2021-11-19 14:08:26,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:26,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466712624] [2021-11-19 14:08:26,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:26,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:26,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:26,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466712624] [2021-11-19 14:08:26,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466712624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:26,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:26,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:08:26,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488767646] [2021-11-19 14:08:26,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:26,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:08:26,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:26,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:08:26,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:08:26,921 INFO L87 Difference]: Start difference. First operand 1046 states and 1381 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:29,669 INFO L93 Difference]: Finished difference Result 1798 states and 2357 transitions. [2021-11-19 14:08:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:08:29,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:08:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:29,671 INFO L225 Difference]: With dead ends: 1798 [2021-11-19 14:08:29,672 INFO L226 Difference]: Without dead ends: 1690 [2021-11-19 14:08:29,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:08:29,673 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 2845 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2845 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:29,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2845 Valid, 2090 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:08:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-11-19 14:08:30,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1046. [2021-11-19 14:08:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1024 states have (on average 1.3466796875) internal successors, (1379), 1045 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1379 transitions. [2021-11-19 14:08:30,110 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1379 transitions. Word has length 114 [2021-11-19 14:08:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:30,111 INFO L470 AbstractCegarLoop]: Abstraction has 1046 states and 1379 transitions. [2021-11-19 14:08:30,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:30,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1379 transitions. [2021-11-19 14:08:30,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:08:30,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:30,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:30,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-19 14:08:30,113 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:30,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:30,113 INFO L85 PathProgramCache]: Analyzing trace with hash 44709825, now seen corresponding path program 1 times [2021-11-19 14:08:30,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:30,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770486560] [2021-11-19 14:08:30,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:30,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:30,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:30,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770486560] [2021-11-19 14:08:30,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770486560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:30,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:30,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:08:30,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546680327] [2021-11-19 14:08:30,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:30,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:08:30,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:30,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:08:30,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:08:30,301 INFO L87 Difference]: Start difference. First operand 1046 states and 1379 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:35,251 INFO L93 Difference]: Finished difference Result 2210 states and 2907 transitions. [2021-11-19 14:08:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:08:35,251 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:08:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:35,253 INFO L225 Difference]: With dead ends: 2210 [2021-11-19 14:08:35,253 INFO L226 Difference]: Without dead ends: 2205 [2021-11-19 14:08:35,254 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 [2021-11-19 14:08:35,254 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 4796 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4796 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:35,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4796 Valid, 2630 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:08:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2021-11-19 14:08:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 1054. [2021-11-19 14:08:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1032 states have (on average 1.3439922480620154) internal successors, (1387), 1053 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1387 transitions. [2021-11-19 14:08:35,729 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1387 transitions. Word has length 114 [2021-11-19 14:08:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:35,729 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1387 transitions. [2021-11-19 14:08:35,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1387 transitions. [2021-11-19 14:08:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:08:35,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:35,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:35,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-19 14:08:35,731 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:35,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash -759029279, now seen corresponding path program 1 times [2021-11-19 14:08:35,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:35,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085237712] [2021-11-19 14:08:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:35,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:35,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:35,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085237712] [2021-11-19 14:08:35,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085237712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:35,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:35,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:08:35,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622103718] [2021-11-19 14:08:35,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:35,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:08:35,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:08:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:08:35,870 INFO L87 Difference]: Start difference. First operand 1054 states and 1387 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:38,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:38,425 INFO L93 Difference]: Finished difference Result 1695 states and 2213 transitions. [2021-11-19 14:08:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:08:38,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:08:38,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:38,427 INFO L225 Difference]: With dead ends: 1695 [2021-11-19 14:08:38,427 INFO L226 Difference]: Without dead ends: 1690 [2021-11-19 14:08:38,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:08:38,428 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 2843 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2843 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 1975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:38,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2843 Valid, 2099 Invalid, 1975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:08:38,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-11-19 14:08:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1054. [2021-11-19 14:08:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1032 states have (on average 1.3420542635658914) internal successors, (1385), 1053 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1385 transitions. [2021-11-19 14:08:38,874 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1385 transitions. Word has length 114 [2021-11-19 14:08:38,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:38,874 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1385 transitions. [2021-11-19 14:08:38,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:38,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1385 transitions. [2021-11-19 14:08:38,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:08:38,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:38,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:38,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-19 14:08:38,876 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:38,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:38,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1153167823, now seen corresponding path program 1 times [2021-11-19 14:08:38,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:38,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401967181] [2021-11-19 14:08:38,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:38,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:38,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:38,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401967181] [2021-11-19 14:08:38,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401967181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:38,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:38,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:08:38,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662454286] [2021-11-19 14:08:38,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:38,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:08:38,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:38,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:08:38,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:08:38,999 INFO L87 Difference]: Start difference. First operand 1054 states and 1385 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:41,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:41,769 INFO L93 Difference]: Finished difference Result 1809 states and 2375 transitions. [2021-11-19 14:08:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:08:41,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:08:41,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:41,771 INFO L225 Difference]: With dead ends: 1809 [2021-11-19 14:08:41,771 INFO L226 Difference]: Without dead ends: 1792 [2021-11-19 14:08:41,772 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 [2021-11-19 14:08:41,772 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 2613 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2613 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:41,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2613 Valid, 2610 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:08:41,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2021-11-19 14:08:42,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1054. [2021-11-19 14:08:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1032 states have (on average 1.3401162790697674) internal successors, (1383), 1053 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1383 transitions. [2021-11-19 14:08:42,200 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1383 transitions. Word has length 114 [2021-11-19 14:08:42,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:42,200 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1383 transitions. [2021-11-19 14:08:42,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1383 transitions. [2021-11-19 14:08:42,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:08:42,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:42,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:42,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-19 14:08:42,202 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:42,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:42,202 INFO L85 PathProgramCache]: Analyzing trace with hash -248950219, now seen corresponding path program 1 times [2021-11-19 14:08:42,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:42,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387266303] [2021-11-19 14:08:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:42,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:42,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:42,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387266303] [2021-11-19 14:08:42,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387266303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:42,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:42,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:08:42,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049338879] [2021-11-19 14:08:42,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:42,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:08:42,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:42,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:08:42,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:08:42,298 INFO L87 Difference]: Start difference. First operand 1054 states and 1383 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:44,792 INFO L93 Difference]: Finished difference Result 1798 states and 2349 transitions. [2021-11-19 14:08:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:08:44,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:08:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:44,794 INFO L225 Difference]: With dead ends: 1798 [2021-11-19 14:08:44,795 INFO L226 Difference]: Without dead ends: 1690 [2021-11-19 14:08:44,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:08:44,796 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 2703 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:44,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2703 Valid, 2212 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:08:44,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-11-19 14:08:45,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1054. [2021-11-19 14:08:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1032 states have (on average 1.3381782945736433) internal successors, (1381), 1053 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1381 transitions. [2021-11-19 14:08:45,258 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1381 transitions. Word has length 114 [2021-11-19 14:08:45,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:45,258 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1381 transitions. [2021-11-19 14:08:45,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:45,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1381 transitions. [2021-11-19 14:08:45,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:08:45,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:45,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:45,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-19 14:08:45,260 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:45,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:45,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1514165854, now seen corresponding path program 1 times [2021-11-19 14:08:45,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:45,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015293497] [2021-11-19 14:08:45,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:45,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:45,469 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:45,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015293497] [2021-11-19 14:08:45,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015293497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:45,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:45,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:08:45,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142169085] [2021-11-19 14:08:45,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:45,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:08:45,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:45,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:08:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:08:45,471 INFO L87 Difference]: Start difference. First operand 1054 states and 1381 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:50,135 INFO L93 Difference]: Finished difference Result 2210 states and 2899 transitions. [2021-11-19 14:08:50,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:08:50,135 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:08:50,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:50,137 INFO L225 Difference]: With dead ends: 2210 [2021-11-19 14:08:50,137 INFO L226 Difference]: Without dead ends: 2205 [2021-11-19 14:08:50,138 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 [2021-11-19 14:08:50,138 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 4565 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4565 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:50,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4565 Valid, 2390 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:08:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2021-11-19 14:08:50,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 1062. [2021-11-19 14:08:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1040 states have (on average 1.335576923076923) internal successors, (1389), 1061 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1389 transitions. [2021-11-19 14:08:50,615 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1389 transitions. Word has length 114 [2021-11-19 14:08:50,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:50,616 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 1389 transitions. [2021-11-19 14:08:50,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1389 transitions. [2021-11-19 14:08:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:08:50,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:50,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:50,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-19 14:08:50,618 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:50,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1656096971, now seen corresponding path program 1 times [2021-11-19 14:08:50,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:50,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229289658] [2021-11-19 14:08:50,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:50,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:50,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:50,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229289658] [2021-11-19 14:08:50,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229289658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:50,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:50,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:08:50,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028867732] [2021-11-19 14:08:50,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:50,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:08:50,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:50,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:08:50,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:08:50,786 INFO L87 Difference]: Start difference. First operand 1062 states and 1389 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:55,508 INFO L93 Difference]: Finished difference Result 2324 states and 3055 transitions. [2021-11-19 14:08:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:08:55,509 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:08:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:55,511 INFO L225 Difference]: With dead ends: 2324 [2021-11-19 14:08:55,511 INFO L226 Difference]: Without dead ends: 2216 [2021-11-19 14:08:55,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:08:55,512 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 4791 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:55,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4791 Valid, 2320 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:08:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2021-11-19 14:08:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 1070. [2021-11-19 14:08:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1048 states have (on average 1.3330152671755726) internal successors, (1397), 1069 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1397 transitions. [2021-11-19 14:08:56,001 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1397 transitions. Word has length 114 [2021-11-19 14:08:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:56,001 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 1397 transitions. [2021-11-19 14:08:56,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1397 transitions. [2021-11-19 14:08:56,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:08:56,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:56,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:56,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-19 14:08:56,003 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:56,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1579404938, now seen corresponding path program 1 times [2021-11-19 14:08:56,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:56,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521888871] [2021-11-19 14:08:56,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:56,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:56,122 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:56,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521888871] [2021-11-19 14:08:56,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521888871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:56,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:56,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:08:56,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431172310] [2021-11-19 14:08:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:56,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:08:56,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:56,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:08:56,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:08:56,124 INFO L87 Difference]: Start difference. First operand 1070 states and 1397 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:58,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:08:58,760 INFO L93 Difference]: Finished difference Result 1794 states and 2339 transitions. [2021-11-19 14:08:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:08:58,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:08:58,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:08:58,763 INFO L225 Difference]: With dead ends: 1794 [2021-11-19 14:08:58,763 INFO L226 Difference]: Without dead ends: 1690 [2021-11-19 14:08:58,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:08:58,764 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 2817 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:08:58,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2817 Valid, 2107 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:08:58,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-11-19 14:08:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1070. [2021-11-19 14:08:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1048 states have (on average 1.3311068702290076) internal successors, (1395), 1069 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1395 transitions. [2021-11-19 14:08:59,279 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1395 transitions. Word has length 114 [2021-11-19 14:08:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:08:59,280 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 1395 transitions. [2021-11-19 14:08:59,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:08:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1395 transitions. [2021-11-19 14:08:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:08:59,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:08:59,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:08:59,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-19 14:08:59,282 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:08:59,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:08:59,282 INFO L85 PathProgramCache]: Analyzing trace with hash 816296341, now seen corresponding path program 1 times [2021-11-19 14:08:59,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:08:59,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155010249] [2021-11-19 14:08:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:08:59,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:08:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:08:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:59,428 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:08:59,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155010249] [2021-11-19 14:08:59,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155010249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:08:59,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:08:59,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:08:59,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550706027] [2021-11-19 14:08:59,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:08:59,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:08:59,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:08:59,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:08:59,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:08:59,430 INFO L87 Difference]: Start difference. First operand 1070 states and 1395 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:02,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:02,120 INFO L93 Difference]: Finished difference Result 1798 states and 2341 transitions. [2021-11-19 14:09:02,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:09:02,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:02,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:02,122 INFO L225 Difference]: With dead ends: 1798 [2021-11-19 14:09:02,122 INFO L226 Difference]: Without dead ends: 1690 [2021-11-19 14:09:02,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:09:02,123 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 2814 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2814 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:02,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2814 Valid, 2110 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:09:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-11-19 14:09:02,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1070. [2021-11-19 14:09:02,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1048 states have (on average 1.3291984732824427) internal successors, (1393), 1069 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1393 transitions. [2021-11-19 14:09:02,625 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1393 transitions. Word has length 114 [2021-11-19 14:09:02,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:02,625 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 1393 transitions. [2021-11-19 14:09:02,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:02,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1393 transitions. [2021-11-19 14:09:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:02,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:02,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:02,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-19 14:09:02,628 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:02,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:02,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1803640257, now seen corresponding path program 1 times [2021-11-19 14:09:02,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:02,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117034541] [2021-11-19 14:09:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:02,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:02,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:02,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117034541] [2021-11-19 14:09:02,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117034541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:02,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:02,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:09:02,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864847371] [2021-11-19 14:09:02,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:02,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:09:02,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:02,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:09:02,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:09:02,869 INFO L87 Difference]: Start difference. First operand 1070 states and 1393 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:08,553 INFO L93 Difference]: Finished difference Result 2526 states and 3319 transitions. [2021-11-19 14:09:08,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:09:08,553 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:08,555 INFO L225 Difference]: With dead ends: 2526 [2021-11-19 14:09:08,556 INFO L226 Difference]: Without dead ends: 2404 [2021-11-19 14:09:08,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:09:08,557 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 4580 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 3042 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 3425 SdHoareTripleChecker+Invalid, 3591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 3042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:08,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4580 Valid, 3425 Invalid, 3591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 3042 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:09:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2021-11-19 14:09:09,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1078. [2021-11-19 14:09:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1056 states have (on average 1.3267045454545454) internal successors, (1401), 1077 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:09,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1401 transitions. [2021-11-19 14:09:09,083 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1401 transitions. Word has length 114 [2021-11-19 14:09:09,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:09,084 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 1401 transitions. [2021-11-19 14:09:09,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1401 transitions. [2021-11-19 14:09:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:09,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:09,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:09,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-19 14:09:09,086 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:09,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:09,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1464990417, now seen corresponding path program 1 times [2021-11-19 14:09:09,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:09,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743298577] [2021-11-19 14:09:09,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:09,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:09,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:09,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743298577] [2021-11-19 14:09:09,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743298577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:09,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:09,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:09:09,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71524995] [2021-11-19 14:09:09,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:09,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:09:09,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:09,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:09:09,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:09:09,297 INFO L87 Difference]: Start difference. First operand 1078 states and 1401 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:14,568 INFO L93 Difference]: Finished difference Result 2332 states and 3057 transitions. [2021-11-19 14:09:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:09:14,568 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:14,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:14,570 INFO L225 Difference]: With dead ends: 2332 [2021-11-19 14:09:14,570 INFO L226 Difference]: Without dead ends: 2224 [2021-11-19 14:09:14,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:09:14,571 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 4739 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:14,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4739 Valid, 2317 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:09:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-11-19 14:09:15,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1086. [2021-11-19 14:09:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1064 states have (on average 1.324248120300752) internal successors, (1409), 1085 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:15,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1409 transitions. [2021-11-19 14:09:15,120 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1409 transitions. Word has length 114 [2021-11-19 14:09:15,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:15,121 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 1409 transitions. [2021-11-19 14:09:15,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1409 transitions. [2021-11-19 14:09:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:15,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:15,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:15,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-19 14:09:15,123 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash -931195966, now seen corresponding path program 1 times [2021-11-19 14:09:15,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:15,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972070777] [2021-11-19 14:09:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:15,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:15,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:15,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972070777] [2021-11-19 14:09:15,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972070777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:15,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:15,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:09:15,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579946532] [2021-11-19 14:09:15,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:15,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:09:15,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:15,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:09:15,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:09:15,243 INFO L87 Difference]: Start difference. First operand 1086 states and 1409 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:18,003 INFO L93 Difference]: Finished difference Result 1802 states and 2341 transitions. [2021-11-19 14:09:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:09:18,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:18,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:18,006 INFO L225 Difference]: With dead ends: 1802 [2021-11-19 14:09:18,006 INFO L226 Difference]: Without dead ends: 1698 [2021-11-19 14:09:18,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:09:18,007 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 2815 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2815 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:18,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2815 Valid, 2103 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:09:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2021-11-19 14:09:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1086. [2021-11-19 14:09:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1064 states have (on average 1.3223684210526316) internal successors, (1407), 1085 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:18,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1407 transitions. [2021-11-19 14:09:18,533 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1407 transitions. Word has length 114 [2021-11-19 14:09:18,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:18,534 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 1407 transitions. [2021-11-19 14:09:18,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:18,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1407 transitions. [2021-11-19 14:09:18,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:18,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:18,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:18,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-19 14:09:18,536 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:18,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:18,536 INFO L85 PathProgramCache]: Analyzing trace with hash -792310262, now seen corresponding path program 1 times [2021-11-19 14:09:18,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:18,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133714431] [2021-11-19 14:09:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:18,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:18,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:18,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133714431] [2021-11-19 14:09:18,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133714431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:18,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:18,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:09:18,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080640100] [2021-11-19 14:09:18,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:18,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:09:18,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:18,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:09:18,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:09:18,714 INFO L87 Difference]: Start difference. First operand 1086 states and 1407 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:24,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:24,282 INFO L93 Difference]: Finished difference Result 2710 states and 3557 transitions. [2021-11-19 14:09:24,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:09:24,283 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:24,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:24,285 INFO L225 Difference]: With dead ends: 2710 [2021-11-19 14:09:24,285 INFO L226 Difference]: Without dead ends: 2542 [2021-11-19 14:09:24,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:09:24,287 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 5113 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5113 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:24,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5113 Valid, 2997 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:09:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2021-11-19 14:09:24,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1094. [2021-11-19 14:09:24,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1072 states have (on average 1.319962686567164) internal successors, (1415), 1093 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1415 transitions. [2021-11-19 14:09:24,851 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1415 transitions. Word has length 114 [2021-11-19 14:09:24,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:24,851 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1415 transitions. [2021-11-19 14:09:24,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:24,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1415 transitions. [2021-11-19 14:09:24,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:24,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:24,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:24,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-19 14:09:24,853 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:24,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:24,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1628046504, now seen corresponding path program 1 times [2021-11-19 14:09:24,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:24,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162110247] [2021-11-19 14:09:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:24,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:24,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:24,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162110247] [2021-11-19 14:09:24,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162110247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:24,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:24,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:09:24,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420577454] [2021-11-19 14:09:24,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:24,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:09:24,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:24,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:09:24,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:09:24,980 INFO L87 Difference]: Start difference. First operand 1094 states and 1415 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:27,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:27,838 INFO L93 Difference]: Finished difference Result 1818 states and 2356 transitions. [2021-11-19 14:09:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:09:27,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:27,840 INFO L225 Difference]: With dead ends: 1818 [2021-11-19 14:09:27,840 INFO L226 Difference]: Without dead ends: 1706 [2021-11-19 14:09:27,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:09:27,841 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 2806 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:27,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2806 Valid, 2126 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:09:27,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-19 14:09:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1094. [2021-11-19 14:09:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1072 states have (on average 1.3180970149253732) internal successors, (1413), 1093 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:28,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1413 transitions. [2021-11-19 14:09:28,338 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1413 transitions. Word has length 114 [2021-11-19 14:09:28,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:28,339 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1413 transitions. [2021-11-19 14:09:28,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1413 transitions. [2021-11-19 14:09:28,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:28,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:28,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:28,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-19 14:09:28,342 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:28,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash -754723690, now seen corresponding path program 1 times [2021-11-19 14:09:28,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:28,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651946223] [2021-11-19 14:09:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:28,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:28,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:28,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651946223] [2021-11-19 14:09:28,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651946223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:28,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:28,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:09:28,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483524562] [2021-11-19 14:09:28,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:28,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:09:28,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:28,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:09:28,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:09:28,441 INFO L87 Difference]: Start difference. First operand 1094 states and 1413 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:31,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:31,246 INFO L93 Difference]: Finished difference Result 1960 states and 2547 transitions. [2021-11-19 14:09:31,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:09:31,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:31,248 INFO L225 Difference]: With dead ends: 1960 [2021-11-19 14:09:31,248 INFO L226 Difference]: Without dead ends: 1832 [2021-11-19 14:09:31,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:09:31,249 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 2603 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2603 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:31,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2603 Valid, 2583 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2128 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:09:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2021-11-19 14:09:31,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1094. [2021-11-19 14:09:31,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1072 states have (on average 1.3162313432835822) internal successors, (1411), 1093 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1411 transitions. [2021-11-19 14:09:31,776 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1411 transitions. Word has length 114 [2021-11-19 14:09:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:31,776 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1411 transitions. [2021-11-19 14:09:31,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:31,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1411 transitions. [2021-11-19 14:09:31,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:31,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:31,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:31,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-19 14:09:31,778 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:31,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:31,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1263034005, now seen corresponding path program 1 times [2021-11-19 14:09:31,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:31,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195844505] [2021-11-19 14:09:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:31,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:31,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:31,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195844505] [2021-11-19 14:09:31,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195844505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:31,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:31,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:09:31,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45623933] [2021-11-19 14:09:31,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:31,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:09:31,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:31,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:09:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:09:31,899 INFO L87 Difference]: Start difference. First operand 1094 states and 1411 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:34,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:34,674 INFO L93 Difference]: Finished difference Result 1818 states and 2352 transitions. [2021-11-19 14:09:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:09:34,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:34,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:34,676 INFO L225 Difference]: With dead ends: 1818 [2021-11-19 14:09:34,676 INFO L226 Difference]: Without dead ends: 1706 [2021-11-19 14:09:34,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:09:34,677 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 2762 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2762 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:34,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2762 Valid, 2178 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:09:34,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-19 14:09:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1094. [2021-11-19 14:09:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1072 states have (on average 1.314365671641791) internal successors, (1409), 1093 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:35,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1409 transitions. [2021-11-19 14:09:35,231 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1409 transitions. Word has length 114 [2021-11-19 14:09:35,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:35,231 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1409 transitions. [2021-11-19 14:09:35,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1409 transitions. [2021-11-19 14:09:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:35,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:35,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:35,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-19 14:09:35,233 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:35,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:35,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1119736189, now seen corresponding path program 1 times [2021-11-19 14:09:35,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:35,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005889969] [2021-11-19 14:09:35,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:35,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:35,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:35,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005889969] [2021-11-19 14:09:35,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005889969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:35,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:35,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:09:35,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461330214] [2021-11-19 14:09:35,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:35,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:09:35,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:09:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:09:35,334 INFO L87 Difference]: Start difference. First operand 1094 states and 1409 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:38,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:38,151 INFO L93 Difference]: Finished difference Result 1960 states and 2541 transitions. [2021-11-19 14:09:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:09:38,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:38,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:38,153 INFO L225 Difference]: With dead ends: 1960 [2021-11-19 14:09:38,153 INFO L226 Difference]: Without dead ends: 1832 [2021-11-19 14:09:38,153 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 [2021-11-19 14:09:38,154 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 2635 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:38,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2635 Valid, 2542 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:09:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2021-11-19 14:09:38,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1094. [2021-11-19 14:09:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1072 states have (on average 1.3125) internal successors, (1407), 1093 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1407 transitions. [2021-11-19 14:09:38,684 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1407 transitions. Word has length 114 [2021-11-19 14:09:38,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:38,684 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1407 transitions. [2021-11-19 14:09:38,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1407 transitions. [2021-11-19 14:09:38,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:38,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:38,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:38,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-19 14:09:38,688 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:38,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:38,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1773855829, now seen corresponding path program 1 times [2021-11-19 14:09:38,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:38,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75955258] [2021-11-19 14:09:38,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:38,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:38,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:38,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75955258] [2021-11-19 14:09:38,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75955258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:38,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:38,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:09:38,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171899463] [2021-11-19 14:09:38,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:38,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:09:38,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:38,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:09:38,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:09:38,824 INFO L87 Difference]: Start difference. First operand 1094 states and 1407 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:41,662 INFO L93 Difference]: Finished difference Result 1814 states and 2343 transitions. [2021-11-19 14:09:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:09:41,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:41,664 INFO L225 Difference]: With dead ends: 1814 [2021-11-19 14:09:41,664 INFO L226 Difference]: Without dead ends: 1706 [2021-11-19 14:09:41,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:09:41,665 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 2628 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2628 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:41,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2628 Valid, 2276 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:09:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-19 14:09:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1094. [2021-11-19 14:09:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1072 states have (on average 1.310634328358209) internal successors, (1405), 1093 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1405 transitions. [2021-11-19 14:09:42,206 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1405 transitions. Word has length 114 [2021-11-19 14:09:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:42,206 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1405 transitions. [2021-11-19 14:09:42,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1405 transitions. [2021-11-19 14:09:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:42,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:42,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:42,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-19 14:09:42,208 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash 507897430, now seen corresponding path program 1 times [2021-11-19 14:09:42,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:42,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736181020] [2021-11-19 14:09:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:42,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:42,396 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:42,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736181020] [2021-11-19 14:09:42,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736181020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:42,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:42,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:09:42,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599748184] [2021-11-19 14:09:42,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:42,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:09:42,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:42,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:09:42,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:09:42,397 INFO L87 Difference]: Start difference. First operand 1094 states and 1405 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:47,559 INFO L93 Difference]: Finished difference Result 2336 states and 3043 transitions. [2021-11-19 14:09:47,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:09:47,560 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:47,562 INFO L225 Difference]: With dead ends: 2336 [2021-11-19 14:09:47,562 INFO L226 Difference]: Without dead ends: 2224 [2021-11-19 14:09:47,562 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 [2021-11-19 14:09:47,563 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 4666 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:47,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4666 Valid, 2401 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2137 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:09:47,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-11-19 14:09:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1102. [2021-11-19 14:09:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1080 states have (on average 1.3083333333333333) internal successors, (1413), 1101 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:48,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1413 transitions. [2021-11-19 14:09:48,097 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1413 transitions. Word has length 114 [2021-11-19 14:09:48,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:48,097 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1413 transitions. [2021-11-19 14:09:48,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:48,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1413 transitions. [2021-11-19 14:09:48,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:48,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:48,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:48,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-19 14:09:48,099 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:48,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:48,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1233359702, now seen corresponding path program 1 times [2021-11-19 14:09:48,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:48,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010630268] [2021-11-19 14:09:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:48,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:48,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:48,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010630268] [2021-11-19 14:09:48,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010630268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:48,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:48,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:09:48,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284036888] [2021-11-19 14:09:48,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:48,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:09:48,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:48,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:09:48,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:09:48,201 INFO L87 Difference]: Start difference. First operand 1102 states and 1413 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:50,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:50,987 INFO L93 Difference]: Finished difference Result 1968 states and 2543 transitions. [2021-11-19 14:09:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:09:50,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:50,989 INFO L225 Difference]: With dead ends: 1968 [2021-11-19 14:09:50,989 INFO L226 Difference]: Without dead ends: 1840 [2021-11-19 14:09:50,990 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 [2021-11-19 14:09:50,990 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 2745 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:50,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2745 Valid, 2503 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:09:50,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2021-11-19 14:09:51,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1102. [2021-11-19 14:09:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1080 states have (on average 1.3064814814814816) internal successors, (1411), 1101 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1411 transitions. [2021-11-19 14:09:51,553 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1411 transitions. Word has length 114 [2021-11-19 14:09:51,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:51,553 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1411 transitions. [2021-11-19 14:09:51,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1411 transitions. [2021-11-19 14:09:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:51,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:51,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:51,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-19 14:09:51,555 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:51,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:51,556 INFO L85 PathProgramCache]: Analyzing trace with hash -678837400, now seen corresponding path program 1 times [2021-11-19 14:09:51,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:51,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239630722] [2021-11-19 14:09:51,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:51,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:51,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:51,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239630722] [2021-11-19 14:09:51,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239630722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:51,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:51,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:09:51,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881315840] [2021-11-19 14:09:51,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:51,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:09:51,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:51,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:09:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:09:51,687 INFO L87 Difference]: Start difference. First operand 1102 states and 1411 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:54,433 INFO L93 Difference]: Finished difference Result 1818 states and 2342 transitions. [2021-11-19 14:09:54,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:09:54,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:54,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:54,435 INFO L225 Difference]: With dead ends: 1818 [2021-11-19 14:09:54,436 INFO L226 Difference]: Without dead ends: 1706 [2021-11-19 14:09:54,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:09:54,436 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 2684 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:54,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2684 Valid, 2266 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:09:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-19 14:09:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1102. [2021-11-19 14:09:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1080 states have (on average 1.3046296296296296) internal successors, (1409), 1101 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1409 transitions. [2021-11-19 14:09:54,981 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1409 transitions. Word has length 114 [2021-11-19 14:09:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:54,981 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1409 transitions. [2021-11-19 14:09:54,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1409 transitions. [2021-11-19 14:09:54,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:54,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:54,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:54,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-19 14:09:54,983 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:54,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:54,983 INFO L85 PathProgramCache]: Analyzing trace with hash -168278721, now seen corresponding path program 1 times [2021-11-19 14:09:54,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:54,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746334752] [2021-11-19 14:09:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:54,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:55,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:55,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746334752] [2021-11-19 14:09:55,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746334752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:55,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:55,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:09:55,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671484659] [2021-11-19 14:09:55,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:55,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:09:55,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:09:55,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:09:55,104 INFO L87 Difference]: Start difference. First operand 1102 states and 1409 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:09:58,009 INFO L93 Difference]: Finished difference Result 1814 states and 2335 transitions. [2021-11-19 14:09:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:09:58,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:09:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:09:58,012 INFO L225 Difference]: With dead ends: 1814 [2021-11-19 14:09:58,012 INFO L226 Difference]: Without dead ends: 1706 [2021-11-19 14:09:58,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:09:58,013 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 2591 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2591 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:09:58,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2591 Valid, 2312 Invalid, 2099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:09:58,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-19 14:09:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1102. [2021-11-19 14:09:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1080 states have (on average 1.3027777777777778) internal successors, (1407), 1101 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1407 transitions. [2021-11-19 14:09:58,589 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1407 transitions. Word has length 114 [2021-11-19 14:09:58,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:09:58,590 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1407 transitions. [2021-11-19 14:09:58,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:09:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1407 transitions. [2021-11-19 14:09:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:09:58,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:09:58,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:09:58,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-19 14:09:58,592 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:09:58,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:09:58,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1433973975, now seen corresponding path program 1 times [2021-11-19 14:09:58,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:09:58,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691695562] [2021-11-19 14:09:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:09:58,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:09:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:09:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:58,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:09:58,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691695562] [2021-11-19 14:09:58,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691695562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:09:58,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:09:58,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:09:58,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669897320] [2021-11-19 14:09:58,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:09:58,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:09:58,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:58,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:09:58,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:09:58,777 INFO L87 Difference]: Start difference. First operand 1102 states and 1407 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:04,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:04,366 INFO L93 Difference]: Finished difference Result 2336 states and 3035 transitions. [2021-11-19 14:10:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:10:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:10:04,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:04,369 INFO L225 Difference]: With dead ends: 2336 [2021-11-19 14:10:04,369 INFO L226 Difference]: Without dead ends: 2224 [2021-11-19 14:10:04,370 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 [2021-11-19 14:10:04,370 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 4506 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4506 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:04,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4506 Valid, 2966 Invalid, 3347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 2638 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:10:04,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-11-19 14:10:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1110. [2021-11-19 14:10:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1088 states have (on average 1.3005514705882353) internal successors, (1415), 1109 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1415 transitions. [2021-11-19 14:10:04,972 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1415 transitions. Word has length 114 [2021-11-19 14:10:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:04,973 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1415 transitions. [2021-11-19 14:10:04,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:04,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1415 transitions. [2021-11-19 14:10:04,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:10:04,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:04,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:04,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-19 14:10:04,974 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:04,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1390479784, now seen corresponding path program 1 times [2021-11-19 14:10:04,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:04,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716095155] [2021-11-19 14:10:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:04,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:05,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:05,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716095155] [2021-11-19 14:10:05,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716095155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:05,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:05,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:10:05,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235778016] [2021-11-19 14:10:05,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:05,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:10:05,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:10:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:10:05,077 INFO L87 Difference]: Start difference. First operand 1110 states and 1415 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:08,098 INFO L93 Difference]: Finished difference Result 1814 states and 2331 transitions. [2021-11-19 14:10:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:10:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:10:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:08,101 INFO L225 Difference]: With dead ends: 1814 [2021-11-19 14:10:08,101 INFO L226 Difference]: Without dead ends: 1706 [2021-11-19 14:10:08,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:10:08,102 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 2590 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:08,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2590 Valid, 2312 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:10:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-19 14:10:08,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1110. [2021-11-19 14:10:08,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1088 states have (on average 1.2987132352941178) internal successors, (1413), 1109 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:08,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1413 transitions. [2021-11-19 14:10:08,691 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1413 transitions. Word has length 114 [2021-11-19 14:10:08,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:08,692 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1413 transitions. [2021-11-19 14:10:08,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:08,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1413 transitions. [2021-11-19 14:10:08,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:10:08,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:08,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:08,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-19 14:10:08,693 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:08,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:08,694 INFO L85 PathProgramCache]: Analyzing trace with hash 124901704, now seen corresponding path program 1 times [2021-11-19 14:10:08,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:08,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913743352] [2021-11-19 14:10:08,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:08,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:08,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:08,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913743352] [2021-11-19 14:10:08,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913743352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:08,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:08,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:10:08,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236577184] [2021-11-19 14:10:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:08,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:10:08,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:08,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:10:08,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:10:08,889 INFO L87 Difference]: Start difference. First operand 1110 states and 1413 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:14,417 INFO L93 Difference]: Finished difference Result 2336 states and 3031 transitions. [2021-11-19 14:10:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:10:14,417 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:10:14,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:14,419 INFO L225 Difference]: With dead ends: 2336 [2021-11-19 14:10:14,419 INFO L226 Difference]: Without dead ends: 2224 [2021-11-19 14:10:14,420 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 [2021-11-19 14:10:14,420 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 4395 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4395 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:14,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4395 Valid, 2481 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:10:14,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-11-19 14:10:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1118. [2021-11-19 14:10:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1096 states have (on average 1.2965328467153285) internal successors, (1421), 1117 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1421 transitions. [2021-11-19 14:10:15,030 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1421 transitions. Word has length 114 [2021-11-19 14:10:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:15,030 INFO L470 AbstractCegarLoop]: Abstraction has 1118 states and 1421 transitions. [2021-11-19 14:10:15,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1421 transitions. [2021-11-19 14:10:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:10:15,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:15,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:15,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-19 14:10:15,032 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:15,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:15,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2039173860, now seen corresponding path program 1 times [2021-11-19 14:10:15,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:15,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5360144] [2021-11-19 14:10:15,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:15,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:15,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:15,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5360144] [2021-11-19 14:10:15,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5360144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:15,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:15,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:10:15,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744107918] [2021-11-19 14:10:15,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:15,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:10:15,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:15,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:10:15,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:10:15,209 INFO L87 Difference]: Start difference. First operand 1118 states and 1421 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:20,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:20,648 INFO L93 Difference]: Finished difference Result 2342 states and 3039 transitions. [2021-11-19 14:10:20,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:10:20,649 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:10:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:20,651 INFO L225 Difference]: With dead ends: 2342 [2021-11-19 14:10:20,651 INFO L226 Difference]: Without dead ends: 2234 [2021-11-19 14:10:20,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:10:20,652 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 4621 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 2124 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:20,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4621 Valid, 2397 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2124 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:10:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-11-19 14:10:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1126. [2021-11-19 14:10:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1104 states have (on average 1.2943840579710144) internal successors, (1429), 1125 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1429 transitions. [2021-11-19 14:10:21,258 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1429 transitions. Word has length 114 [2021-11-19 14:10:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:21,258 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1429 transitions. [2021-11-19 14:10:21,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1429 transitions. [2021-11-19 14:10:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:10:21,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:21,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:21,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-19 14:10:21,260 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:21,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:21,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1742591701, now seen corresponding path program 1 times [2021-11-19 14:10:21,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:21,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358756322] [2021-11-19 14:10:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:21,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:21,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:21,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358756322] [2021-11-19 14:10:21,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358756322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:21,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:21,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:10:21,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913807431] [2021-11-19 14:10:21,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:21,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:10:21,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:10:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:10:21,669 INFO L87 Difference]: Start difference. First operand 1126 states and 1429 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:25,015 INFO L93 Difference]: Finished difference Result 2372 states and 3061 transitions. [2021-11-19 14:10:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:10:25,016 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-19 14:10:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:25,018 INFO L225 Difference]: With dead ends: 2372 [2021-11-19 14:10:25,018 INFO L226 Difference]: Without dead ends: 2166 [2021-11-19 14:10:25,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:10:25,019 INFO L933 BasicCegarLoop]: 1280 mSDtfsCounter, 3737 mSDsluCounter, 5571 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3737 SdHoareTripleChecker+Valid, 6722 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:25,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3737 Valid, 6722 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:10:25,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-11-19 14:10:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1024. [2021-11-19 14:10:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 1003 states have (on average 1.292123629112662) internal successors, (1296), 1023 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1296 transitions. [2021-11-19 14:10:25,616 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1296 transitions. Word has length 114 [2021-11-19 14:10:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:25,616 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 1296 transitions. [2021-11-19 14:10:25,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1296 transitions. [2021-11-19 14:10:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:10:25,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:25,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:25,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-19 14:10:25,618 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:25,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:25,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2017453909, now seen corresponding path program 1 times [2021-11-19 14:10:25,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:25,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385349308] [2021-11-19 14:10:25,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:25,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:25,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:25,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385349308] [2021-11-19 14:10:25,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385349308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:25,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:25,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:10:25,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254101745] [2021-11-19 14:10:25,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:25,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:10:25,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:25,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:10:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:10:25,742 INFO L87 Difference]: Start difference. First operand 1024 states and 1296 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:28,666 INFO L93 Difference]: Finished difference Result 1686 states and 2157 transitions. [2021-11-19 14:10:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:10:28,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-19 14:10:28,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:28,668 INFO L225 Difference]: With dead ends: 1686 [2021-11-19 14:10:28,668 INFO L226 Difference]: Without dead ends: 1578 [2021-11-19 14:10:28,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:10:28,669 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 1761 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:28,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1761 Valid, 2090 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:10:28,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2021-11-19 14:10:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1016. [2021-11-19 14:10:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 995 states have (on average 1.292462311557789) internal successors, (1286), 1015 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:29,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1286 transitions. [2021-11-19 14:10:29,238 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1286 transitions. Word has length 115 [2021-11-19 14:10:29,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:29,238 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 1286 transitions. [2021-11-19 14:10:29,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1286 transitions. [2021-11-19 14:10:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:10:29,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:29,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:29,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-19 14:10:29,241 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:29,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1119837715, now seen corresponding path program 1 times [2021-11-19 14:10:29,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:29,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744994274] [2021-11-19 14:10:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:29,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:29,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:29,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744994274] [2021-11-19 14:10:29,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744994274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:29,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:29,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:10:29,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679385729] [2021-11-19 14:10:29,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:29,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:10:29,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:29,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:10:29,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:10:29,364 INFO L87 Difference]: Start difference. First operand 1016 states and 1286 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:32,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:32,268 INFO L93 Difference]: Finished difference Result 1583 states and 2015 transitions. [2021-11-19 14:10:32,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:10:32,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-19 14:10:32,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:32,270 INFO L225 Difference]: With dead ends: 1583 [2021-11-19 14:10:32,270 INFO L226 Difference]: Without dead ends: 1578 [2021-11-19 14:10:32,270 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 [2021-11-19 14:10:32,271 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 2434 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:32,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2434 Valid, 2126 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:10:32,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2021-11-19 14:10:32,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1008. [2021-11-19 14:10:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 987 states have (on average 1.292806484295846) internal successors, (1276), 1007 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1276 transitions. [2021-11-19 14:10:32,855 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1276 transitions. Word has length 115 [2021-11-19 14:10:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:32,855 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1276 transitions. [2021-11-19 14:10:32,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:32,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1276 transitions. [2021-11-19 14:10:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:10:32,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:32,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:32,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-19 14:10:32,857 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:32,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash 39331804, now seen corresponding path program 1 times [2021-11-19 14:10:32,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:32,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610126681] [2021-11-19 14:10:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:32,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:32,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:32,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610126681] [2021-11-19 14:10:32,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610126681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:32,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:32,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:10:32,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492180553] [2021-11-19 14:10:32,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:32,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:10:32,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:32,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:10:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:10:32,964 INFO L87 Difference]: Start difference. First operand 1008 states and 1276 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:35,851 INFO L93 Difference]: Finished difference Result 1583 states and 2013 transitions. [2021-11-19 14:10:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:10:35,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-19 14:10:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:35,853 INFO L225 Difference]: With dead ends: 1583 [2021-11-19 14:10:35,854 INFO L226 Difference]: Without dead ends: 1578 [2021-11-19 14:10:35,854 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 [2021-11-19 14:10:35,854 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 1688 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:35,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1688 Valid, 2138 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:10:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2021-11-19 14:10:36,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1000. [2021-11-19 14:10:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 979 states have (on average 1.2931562819203268) internal successors, (1266), 999 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1266 transitions. [2021-11-19 14:10:36,460 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1266 transitions. Word has length 115 [2021-11-19 14:10:36,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:36,460 INFO L470 AbstractCegarLoop]: Abstraction has 1000 states and 1266 transitions. [2021-11-19 14:10:36,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:36,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1266 transitions. [2021-11-19 14:10:36,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:10:36,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:36,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:36,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-19 14:10:36,462 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:36,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1643497820, now seen corresponding path program 1 times [2021-11-19 14:10:36,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:36,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790502552] [2021-11-19 14:10:36,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:36,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:36,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:36,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790502552] [2021-11-19 14:10:36,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790502552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:36,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:36,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:10:36,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099219515] [2021-11-19 14:10:36,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:36,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:10:36,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:36,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:10:36,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:10:36,570 INFO L87 Difference]: Start difference. First operand 1000 states and 1266 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:39,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:39,489 INFO L93 Difference]: Finished difference Result 1686 states and 2151 transitions. [2021-11-19 14:10:39,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:10:39,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-19 14:10:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:39,491 INFO L225 Difference]: With dead ends: 1686 [2021-11-19 14:10:39,491 INFO L226 Difference]: Without dead ends: 1578 [2021-11-19 14:10:39,492 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 [2021-11-19 14:10:39,492 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 2414 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2414 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:39,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2414 Valid, 2148 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:10:39,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2021-11-19 14:10:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 992. [2021-11-19 14:10:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 971 states have (on average 1.29351184346035) internal successors, (1256), 991 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1256 transitions. [2021-11-19 14:10:40,038 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1256 transitions. Word has length 115 [2021-11-19 14:10:40,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:40,039 INFO L470 AbstractCegarLoop]: Abstraction has 992 states and 1256 transitions. [2021-11-19 14:10:40,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:40,039 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1256 transitions. [2021-11-19 14:10:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:10:40,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:40,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:40,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-19 14:10:40,040 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:40,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:40,040 INFO L85 PathProgramCache]: Analyzing trace with hash 394279225, now seen corresponding path program 1 times [2021-11-19 14:10:40,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:40,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093379993] [2021-11-19 14:10:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:40,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:40,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:40,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093379993] [2021-11-19 14:10:40,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093379993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:40,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:40,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:10:40,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241683215] [2021-11-19 14:10:40,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:40,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:10:40,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:40,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:10:40,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:10:40,139 INFO L87 Difference]: Start difference. First operand 992 states and 1256 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:42,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:42,968 INFO L93 Difference]: Finished difference Result 1786 states and 2286 transitions. [2021-11-19 14:10:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:10:42,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-19 14:10:42,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:42,970 INFO L225 Difference]: With dead ends: 1786 [2021-11-19 14:10:42,970 INFO L226 Difference]: Without dead ends: 1664 [2021-11-19 14:10:42,971 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 [2021-11-19 14:10:42,972 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 2392 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:42,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2392 Valid, 2374 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:10:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2021-11-19 14:10:43,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 984. [2021-11-19 14:10:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 963 states have (on average 1.2938733125649013) internal successors, (1246), 983 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1246 transitions. [2021-11-19 14:10:43,540 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1246 transitions. Word has length 115 [2021-11-19 14:10:43,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:43,540 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1246 transitions. [2021-11-19 14:10:43,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1246 transitions. [2021-11-19 14:10:43,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:10:43,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:43,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:43,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-19 14:10:43,542 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:43,542 INFO L85 PathProgramCache]: Analyzing trace with hash -390020060, now seen corresponding path program 1 times [2021-11-19 14:10:43,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:43,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660253673] [2021-11-19 14:10:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:43,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:43,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:43,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660253673] [2021-11-19 14:10:43,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660253673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:43,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:43,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:10:43,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682510693] [2021-11-19 14:10:43,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:43,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:10:43,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:10:43,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:10:43,644 INFO L87 Difference]: Start difference. First operand 984 states and 1246 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:46,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:46,464 INFO L93 Difference]: Finished difference Result 1678 states and 2139 transitions. [2021-11-19 14:10:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:10:46,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-19 14:10:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:46,466 INFO L225 Difference]: With dead ends: 1678 [2021-11-19 14:10:46,466 INFO L226 Difference]: Without dead ends: 1570 [2021-11-19 14:10:46,466 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 [2021-11-19 14:10:46,467 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 2370 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:46,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2370 Valid, 2200 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:10:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-11-19 14:10:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 976. [2021-11-19 14:10:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 955 states have (on average 1.294240837696335) internal successors, (1236), 975 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1236 transitions. [2021-11-19 14:10:47,055 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1236 transitions. Word has length 115 [2021-11-19 14:10:47,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:47,055 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1236 transitions. [2021-11-19 14:10:47,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1236 transitions. [2021-11-19 14:10:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:10:47,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:47,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:47,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-19 14:10:47,056 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1701216580, now seen corresponding path program 1 times [2021-11-19 14:10:47,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:47,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861800794] [2021-11-19 14:10:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:47,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:47,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:47,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861800794] [2021-11-19 14:10:47,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861800794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:47,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:47,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:10:47,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043836402] [2021-11-19 14:10:47,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:47,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:10:47,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:47,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:10:47,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:10:47,146 INFO L87 Difference]: Start difference. First operand 976 states and 1236 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:50,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:50,009 INFO L93 Difference]: Finished difference Result 1682 states and 2142 transitions. [2021-11-19 14:10:50,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:10:50,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-19 14:10:50,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:50,012 INFO L225 Difference]: With dead ends: 1682 [2021-11-19 14:10:50,012 INFO L226 Difference]: Without dead ends: 1570 [2021-11-19 14:10:50,013 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 [2021-11-19 14:10:50,013 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1654 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:50,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 2208 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:10:50,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-11-19 14:10:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 968. [2021-11-19 14:10:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 947 states have (on average 1.2946145723336853) internal successors, (1226), 967 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1226 transitions. [2021-11-19 14:10:50,591 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1226 transitions. Word has length 115 [2021-11-19 14:10:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:50,592 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1226 transitions. [2021-11-19 14:10:50,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:50,592 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1226 transitions. [2021-11-19 14:10:50,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:10:50,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:50,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:50,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-19 14:10:50,593 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:50,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:50,594 INFO L85 PathProgramCache]: Analyzing trace with hash 544737330, now seen corresponding path program 1 times [2021-11-19 14:10:50,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:50,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106035195] [2021-11-19 14:10:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:50,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:50,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:50,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106035195] [2021-11-19 14:10:50,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106035195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:50,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:50,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:10:50,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955072009] [2021-11-19 14:10:50,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:50,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:10:50,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:50,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:10:50,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:10:50,716 INFO L87 Difference]: Start difference. First operand 968 states and 1226 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:53,839 INFO L93 Difference]: Finished difference Result 1898 states and 2437 transitions. [2021-11-19 14:10:53,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:10:53,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-19 14:10:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:53,841 INFO L225 Difference]: With dead ends: 1898 [2021-11-19 14:10:53,841 INFO L226 Difference]: Without dead ends: 1730 [2021-11-19 14:10:53,842 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 [2021-11-19 14:10:53,842 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 2261 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2261 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:53,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2261 Valid, 2677 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:10:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2021-11-19 14:10:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 960. [2021-11-19 14:10:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 939 states have (on average 1.2949946751863686) internal successors, (1216), 959 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1216 transitions. [2021-11-19 14:10:54,405 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1216 transitions. Word has length 115 [2021-11-19 14:10:54,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:54,405 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 1216 transitions. [2021-11-19 14:10:54,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1216 transitions. [2021-11-19 14:10:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:10:54,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:54,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:54,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-19 14:10:54,407 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:54,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1769687726, now seen corresponding path program 1 times [2021-11-19 14:10:54,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:54,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202166329] [2021-11-19 14:10:54,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:54,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:54,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:54,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202166329] [2021-11-19 14:10:54,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202166329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:54,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:54,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:10:54,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740490038] [2021-11-19 14:10:54,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:54,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:10:54,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:10:54,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:10:54,528 INFO L87 Difference]: Start difference. First operand 960 states and 1216 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:10:57,491 INFO L93 Difference]: Finished difference Result 1674 states and 2130 transitions. [2021-11-19 14:10:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:10:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-19 14:10:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:10:57,493 INFO L225 Difference]: With dead ends: 1674 [2021-11-19 14:10:57,493 INFO L226 Difference]: Without dead ends: 1562 [2021-11-19 14:10:57,494 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 [2021-11-19 14:10:57,494 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1595 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:10:57,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1595 Valid, 2294 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:10:57,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-11-19 14:10:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 952. [2021-11-19 14:10:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 931 states have (on average 1.2953813104189045) internal successors, (1206), 951 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1206 transitions. [2021-11-19 14:10:58,088 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1206 transitions. Word has length 115 [2021-11-19 14:10:58,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:10:58,089 INFO L470 AbstractCegarLoop]: Abstraction has 952 states and 1206 transitions. [2021-11-19 14:10:58,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:10:58,089 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1206 transitions. [2021-11-19 14:10:58,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 14:10:58,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:10:58,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:10:58,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-19 14:10:58,090 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:10:58,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:10:58,090 INFO L85 PathProgramCache]: Analyzing trace with hash 736668301, now seen corresponding path program 1 times [2021-11-19 14:10:58,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:10:58,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959918736] [2021-11-19 14:10:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:10:58,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:10:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:10:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:58,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:10:58,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959918736] [2021-11-19 14:10:58,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959918736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:10:58,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:10:58,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:10:58,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054461687] [2021-11-19 14:10:58,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:10:58,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:10:58,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:10:58,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:10:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:10:58,441 INFO L87 Difference]: Start difference. First operand 952 states and 1206 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:01,902 INFO L93 Difference]: Finished difference Result 2064 states and 2663 transitions. [2021-11-19 14:11:01,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:11:01,902 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-19 14:11:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:01,904 INFO L225 Difference]: With dead ends: 2064 [2021-11-19 14:11:01,905 INFO L226 Difference]: Without dead ends: 1924 [2021-11-19 14:11:01,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:11:01,906 INFO L933 BasicCegarLoop]: 1014 mSDtfsCounter, 3186 mSDsluCounter, 4353 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3186 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:01,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3186 Valid, 5267 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:11:01,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2021-11-19 14:11:02,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 916. [2021-11-19 14:11:02,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 895 states have (on average 1.2916201117318435) internal successors, (1156), 915 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1156 transitions. [2021-11-19 14:11:02,472 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1156 transitions. Word has length 116 [2021-11-19 14:11:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:02,472 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 1156 transitions. [2021-11-19 14:11:02,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1156 transitions. [2021-11-19 14:11:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 14:11:02,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:02,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:02,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-19 14:11:02,474 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:02,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash 61393649, now seen corresponding path program 1 times [2021-11-19 14:11:02,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:02,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335135767] [2021-11-19 14:11:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:02,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:02,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:02,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335135767] [2021-11-19 14:11:02,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335135767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:02,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:02,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 14:11:02,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750752105] [2021-11-19 14:11:02,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:02,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:11:02,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:02,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:11:02,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:11:02,810 INFO L87 Difference]: Start difference. First operand 916 states and 1156 transitions. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:08,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:08,273 INFO L93 Difference]: Finished difference Result 2998 states and 3874 transitions. [2021-11-19 14:11:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 14:11:08,273 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-19 14:11:08,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:08,276 INFO L225 Difference]: With dead ends: 2998 [2021-11-19 14:11:08,276 INFO L226 Difference]: Without dead ends: 2840 [2021-11-19 14:11:08,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:11:08,277 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 2890 mSDsluCounter, 12285 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 13579 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:08,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2890 Valid, 13579 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:11:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2021-11-19 14:11:08,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 862. [2021-11-19 14:11:08,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 842 states have (on average 1.2909738717339667) internal successors, (1087), 861 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) [2021-11-19 14:11:08,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1087 transitions. [2021-11-19 14:11:08,808 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1087 transitions. Word has length 116 [2021-11-19 14:11:08,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:08,809 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1087 transitions. [2021-11-19 14:11:08,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:08,809 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1087 transitions. [2021-11-19 14:11:08,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 14:11:08,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:08,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:08,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-19 14:11:08,810 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:08,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:08,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1141163554, now seen corresponding path program 1 times [2021-11-19 14:11:08,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:08,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624292790] [2021-11-19 14:11:08,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:08,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:09,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:09,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624292790] [2021-11-19 14:11:09,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624292790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:09,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:09,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:11:09,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526772287] [2021-11-19 14:11:09,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:09,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:11:09,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:09,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:11:09,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:11:09,111 INFO L87 Difference]: Start difference. First operand 862 states and 1087 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:10,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:10,525 INFO L93 Difference]: Finished difference Result 1462 states and 1869 transitions. [2021-11-19 14:11:10,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:11:10,525 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-19 14:11:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:10,526 INFO L225 Difference]: With dead ends: 1462 [2021-11-19 14:11:10,527 INFO L226 Difference]: Without dead ends: 1088 [2021-11-19 14:11:10,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:11:10,528 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 1715 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 3834 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:10,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1715 Valid, 3834 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:11:10,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-11-19 14:11:10,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 592. [2021-11-19 14:11:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 577 states have (on average 1.2842287694974004) internal successors, (741), 591 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 741 transitions. [2021-11-19 14:11:10,964 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 741 transitions. Word has length 116 [2021-11-19 14:11:10,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:10,964 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 741 transitions. [2021-11-19 14:11:10,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 741 transitions. [2021-11-19 14:11:10,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 14:11:10,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:10,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:10,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-19 14:11:10,965 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:10,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:10,965 INFO L85 PathProgramCache]: Analyzing trace with hash -673900795, now seen corresponding path program 1 times [2021-11-19 14:11:10,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:10,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581590768] [2021-11-19 14:11:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:10,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:11,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:11,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581590768] [2021-11-19 14:11:11,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581590768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:11,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:11,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:11:11,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424482198] [2021-11-19 14:11:11,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:11,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:11:11,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:11,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:11:11,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:11:11,315 INFO L87 Difference]: Start difference. First operand 592 states and 741 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:14,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:14,331 INFO L93 Difference]: Finished difference Result 1542 states and 1994 transitions. [2021-11-19 14:11:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:11:14,332 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-19 14:11:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:14,333 INFO L225 Difference]: With dead ends: 1542 [2021-11-19 14:11:14,333 INFO L226 Difference]: Without dead ends: 1384 [2021-11-19 14:11:14,333 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 [2021-11-19 14:11:14,334 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 1967 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 3892 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:14,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 3892 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:11:14,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-11-19 14:11:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 538. [2021-11-19 14:11:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 526 states have (on average 1.273764258555133) internal successors, (670), 537 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 670 transitions. [2021-11-19 14:11:14,766 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 670 transitions. Word has length 116 [2021-11-19 14:11:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:14,766 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 670 transitions. [2021-11-19 14:11:14,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 670 transitions. [2021-11-19 14:11:14,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 14:11:14,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:14,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:14,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-19 14:11:14,767 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:14,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash -615531059, now seen corresponding path program 1 times [2021-11-19 14:11:14,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:14,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130627630] [2021-11-19 14:11:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:14,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:15,033 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:15,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130627630] [2021-11-19 14:11:15,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130627630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:15,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:15,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:11:15,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654098283] [2021-11-19 14:11:15,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:15,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:11:15,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:15,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:11:15,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:11:15,034 INFO L87 Difference]: Start difference. First operand 538 states and 670 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:18,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:18,026 INFO L93 Difference]: Finished difference Result 1386 states and 1785 transitions. [2021-11-19 14:11:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:11:18,026 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-19 14:11:18,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:18,027 INFO L225 Difference]: With dead ends: 1386 [2021-11-19 14:11:18,028 INFO L226 Difference]: Without dead ends: 1260 [2021-11-19 14:11:18,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:11:18,028 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 1664 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:18,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1664 Valid, 3654 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:11:18,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-11-19 14:11:18,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 516. [2021-11-19 14:11:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 506 states have (on average 1.2648221343873518) internal successors, (640), 515 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:18,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 640 transitions. [2021-11-19 14:11:18,474 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 640 transitions. Word has length 116 [2021-11-19 14:11:18,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:18,475 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 640 transitions. [2021-11-19 14:11:18,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:18,475 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 640 transitions. [2021-11-19 14:11:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 14:11:18,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:18,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:18,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-19 14:11:18,476 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:18,477 INFO L85 PathProgramCache]: Analyzing trace with hash 736410642, now seen corresponding path program 1 times [2021-11-19 14:11:18,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:18,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144973267] [2021-11-19 14:11:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:18,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:18,851 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:18,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144973267] [2021-11-19 14:11:18,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144973267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:18,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:18,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 14:11:18,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116413260] [2021-11-19 14:11:18,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:18,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:11:18,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:18,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:11:18,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:11:18,853 INFO L87 Difference]: Start difference. First operand 516 states and 640 transitions. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:23,751 INFO L93 Difference]: Finished difference Result 1852 states and 2405 transitions. [2021-11-19 14:11:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 14:11:23,752 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-19 14:11:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:23,753 INFO L225 Difference]: With dead ends: 1852 [2021-11-19 14:11:23,753 INFO L226 Difference]: Without dead ends: 1636 [2021-11-19 14:11:23,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:11:23,754 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 1770 mSDsluCounter, 4726 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 5307 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:23,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1770 Valid, 5307 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:11:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-11-19 14:11:24,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 404. [2021-11-19 14:11:24,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 398 states have (on average 1.2412060301507537) internal successors, (494), 403 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 494 transitions. [2021-11-19 14:11:24,186 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 494 transitions. Word has length 116 [2021-11-19 14:11:24,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:24,187 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 494 transitions. [2021-11-19 14:11:24,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:24,187 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 494 transitions. [2021-11-19 14:11:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 14:11:24,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:24,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:24,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-19 14:11:24,188 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:24,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1386194619, now seen corresponding path program 1 times [2021-11-19 14:11:24,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:24,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228667362] [2021-11-19 14:11:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:24,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:25,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:25,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228667362] [2021-11-19 14:11:25,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228667362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:25,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:25,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-19 14:11:25,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777174327] [2021-11-19 14:11:25,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:25,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 14:11:25,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:25,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 14:11:25,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:11:25,069 INFO L87 Difference]: Start difference. First operand 404 states and 494 transitions. Second operand has 22 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 21 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:30,653 INFO L93 Difference]: Finished difference Result 1704 states and 2187 transitions. [2021-11-19 14:11:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-19 14:11:30,654 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 21 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-19 14:11:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:30,655 INFO L225 Difference]: With dead ends: 1704 [2021-11-19 14:11:30,655 INFO L226 Difference]: Without dead ends: 1496 [2021-11-19 14:11:30,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=411, Invalid=1659, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 14:11:30,656 INFO L933 BasicCegarLoop]: 682 mSDtfsCounter, 3224 mSDsluCounter, 7962 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3224 SdHoareTripleChecker+Valid, 8372 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:30,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3224 Valid, 8372 Invalid, 2296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2217 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:11:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-11-19 14:11:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 416. [2021-11-19 14:11:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 410 states have (on average 1.2341463414634146) internal successors, (506), 415 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 506 transitions. [2021-11-19 14:11:31,102 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 506 transitions. Word has length 116 [2021-11-19 14:11:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:31,102 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 506 transitions. [2021-11-19 14:11:31,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 21 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 506 transitions. [2021-11-19 14:11:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 14:11:31,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:31,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:31,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-19 14:11:31,104 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:31,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2011872188, now seen corresponding path program 1 times [2021-11-19 14:11:31,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:31,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262135390] [2021-11-19 14:11:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:31,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:31,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:31,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262135390] [2021-11-19 14:11:31,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262135390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:31,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:31,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:11:31,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218016044] [2021-11-19 14:11:31,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:31,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:11:31,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:31,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:11:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:11:31,334 INFO L87 Difference]: Start difference. First operand 416 states and 506 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:36,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:36,512 INFO L93 Difference]: Finished difference Result 1554 states and 2015 transitions. [2021-11-19 14:11:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:11:36,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-19 14:11:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:36,514 INFO L225 Difference]: With dead ends: 1554 [2021-11-19 14:11:36,514 INFO L226 Difference]: Without dead ends: 1420 [2021-11-19 14:11:36,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-19 14:11:36,515 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 2424 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:36,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2424 Valid, 1427 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:11:36,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-11-19 14:11:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 424. [2021-11-19 14:11:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 418 states have (on average 1.229665071770335) internal successors, (514), 423 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) [2021-11-19 14:11:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 514 transitions. [2021-11-19 14:11:36,973 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 514 transitions. Word has length 117 [2021-11-19 14:11:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:36,973 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 514 transitions. [2021-11-19 14:11:36,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 514 transitions. [2021-11-19 14:11:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 14:11:36,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:36,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:36,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-19 14:11:36,974 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:36,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:36,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2069034064, now seen corresponding path program 1 times [2021-11-19 14:11:36,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:36,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709420611] [2021-11-19 14:11:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:36,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:37,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:37,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709420611] [2021-11-19 14:11:37,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709420611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:37,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:37,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:11:37,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168013969] [2021-11-19 14:11:37,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:37,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:11:37,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:37,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:11:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:11:37,367 INFO L87 Difference]: Start difference. First operand 424 states and 514 transitions. Second operand has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:39,113 INFO L93 Difference]: Finished difference Result 724 states and 899 transitions. [2021-11-19 14:11:39,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:11:39,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-19 14:11:39,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:39,115 INFO L225 Difference]: With dead ends: 724 [2021-11-19 14:11:39,115 INFO L226 Difference]: Without dead ends: 614 [2021-11-19 14:11:39,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:11:39,115 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 1487 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:39,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1418 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:11:39,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-19 14:11:39,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 412. [2021-11-19 14:11:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 407 states have (on average 1.221130221130221) internal successors, (497), 411 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 497 transitions. [2021-11-19 14:11:39,581 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 497 transitions. Word has length 117 [2021-11-19 14:11:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:39,581 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 497 transitions. [2021-11-19 14:11:39,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 497 transitions. [2021-11-19 14:11:39,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 14:11:39,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:39,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:39,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-19 14:11:39,583 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:39,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:39,583 INFO L85 PathProgramCache]: Analyzing trace with hash 288516916, now seen corresponding path program 1 times [2021-11-19 14:11:39,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:39,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003517228] [2021-11-19 14:11:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:39,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:40,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:40,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003517228] [2021-11-19 14:11:40,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003517228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:40,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:40,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 14:11:40,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854206856] [2021-11-19 14:11:40,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:40,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:11:40,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:40,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:11:40,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:11:40,044 INFO L87 Difference]: Start difference. First operand 412 states and 497 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:43,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:43,849 INFO L93 Difference]: Finished difference Result 1276 states and 1620 transitions. [2021-11-19 14:11:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 14:11:43,850 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-19 14:11:43,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:43,851 INFO L225 Difference]: With dead ends: 1276 [2021-11-19 14:11:43,851 INFO L226 Difference]: Without dead ends: 1048 [2021-11-19 14:11:43,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:11:43,851 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1197 mSDsluCounter, 3882 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:43,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 4213 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:11:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-11-19 14:11:44,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 288. [2021-11-19 14:11:44,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 286 states have (on average 1.1958041958041958) internal successors, (342), 287 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 342 transitions. [2021-11-19 14:11:44,265 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 342 transitions. Word has length 117 [2021-11-19 14:11:44,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:44,265 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 342 transitions. [2021-11-19 14:11:44,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:44,265 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 342 transitions. [2021-11-19 14:11:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 14:11:44,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:44,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:44,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-19 14:11:44,266 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:44,267 INFO L85 PathProgramCache]: Analyzing trace with hash -531832465, now seen corresponding path program 1 times [2021-11-19 14:11:44,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:44,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337812184] [2021-11-19 14:11:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:44,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:44,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:44,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337812184] [2021-11-19 14:11:44,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337812184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:44,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:44,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:11:44,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549013313] [2021-11-19 14:11:44,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:44,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:11:44,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:44,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:11:44,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:11:44,363 INFO L87 Difference]: Start difference. First operand 288 states and 342 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:45,614 INFO L93 Difference]: Finished difference Result 566 states and 704 transitions. [2021-11-19 14:11:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:11:45,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-19 14:11:45,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:45,615 INFO L225 Difference]: With dead ends: 566 [2021-11-19 14:11:45,615 INFO L226 Difference]: Without dead ends: 432 [2021-11-19 14:11:45,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:11:45,616 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 725 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:45,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 550 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:11:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-19 14:11:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 280. [2021-11-19 14:11:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 278 states have (on average 1.1942446043165467) internal successors, (332), 279 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 332 transitions. [2021-11-19 14:11:46,028 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 332 transitions. Word has length 118 [2021-11-19 14:11:46,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:46,028 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 332 transitions. [2021-11-19 14:11:46,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 332 transitions. [2021-11-19 14:11:46,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 14:11:46,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:46,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:46,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-11-19 14:11:46,029 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:46,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2078533446, now seen corresponding path program 1 times [2021-11-19 14:11:46,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:46,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690210531] [2021-11-19 14:11:46,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:46,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:46,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:46,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690210531] [2021-11-19 14:11:46,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690210531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:46,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:46,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:11:46,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971561291] [2021-11-19 14:11:46,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:46,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:11:46,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:46,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:11:46,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:11:46,420 INFO L87 Difference]: Start difference. First operand 280 states and 332 transitions. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 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) [2021-11-19 14:11:48,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:48,633 INFO L93 Difference]: Finished difference Result 646 states and 812 transitions. [2021-11-19 14:11:48,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:11:48,634 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 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 [2021-11-19 14:11:48,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:48,635 INFO L225 Difference]: With dead ends: 646 [2021-11-19 14:11:48,635 INFO L226 Difference]: Without dead ends: 640 [2021-11-19 14:11:48,635 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 [2021-11-19 14:11:48,635 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 1041 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:48,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 1744 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:11:48,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-19 14:11:49,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 274. [2021-11-19 14:11:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.1904761904761905) internal successors, (325), 273 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 325 transitions. [2021-11-19 14:11:49,057 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 325 transitions. Word has length 119 [2021-11-19 14:11:49,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:49,057 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 325 transitions. [2021-11-19 14:11:49,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 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) [2021-11-19 14:11:49,057 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 325 transitions. [2021-11-19 14:11:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-19 14:11:49,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:49,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:49,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-11-19 14:11:49,058 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:49,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:49,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1184257751, now seen corresponding path program 1 times [2021-11-19 14:11:49,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:49,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130590775] [2021-11-19 14:11:49,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:49,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:49,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:49,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130590775] [2021-11-19 14:11:49,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130590775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:49,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:49,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:11:49,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981704910] [2021-11-19 14:11:49,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:49,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:11:49,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:49,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:11:49,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:11:49,131 INFO L87 Difference]: Start difference. First operand 274 states and 325 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) [2021-11-19 14:11:49,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:49,857 INFO L93 Difference]: Finished difference Result 386 states and 475 transitions. [2021-11-19 14:11:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:11:49,858 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 [2021-11-19 14:11:49,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:49,858 INFO L225 Difference]: With dead ends: 386 [2021-11-19 14:11:49,858 INFO L226 Difference]: Without dead ends: 333 [2021-11-19 14:11:49,859 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 [2021-11-19 14:11:49,859 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 83 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:49,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 392 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:11:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-19 14:11:50,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 323. [2021-11-19 14:11:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.2111801242236024) internal successors, (390), 322 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 390 transitions. [2021-11-19 14:11:50,468 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 390 transitions. Word has length 139 [2021-11-19 14:11:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:50,469 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 390 transitions. [2021-11-19 14:11:50,469 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) [2021-11-19 14:11:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 390 transitions. [2021-11-19 14:11:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-19 14:11:50,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:50,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:50,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-11-19 14:11:50,470 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:50,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:50,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1527983402, now seen corresponding path program 1 times [2021-11-19 14:11:50,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:50,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20097600] [2021-11-19 14:11:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:50,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:50,524 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:50,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20097600] [2021-11-19 14:11:50,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20097600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:50,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:50,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:11:50,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603193503] [2021-11-19 14:11:50,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:50,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:11:50,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:50,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:11:50,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:11:50,525 INFO L87 Difference]: Start difference. First operand 323 states and 390 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:51,679 INFO L93 Difference]: Finished difference Result 625 states and 796 transitions. [2021-11-19 14:11:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:11:51,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-19 14:11:51,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:51,681 INFO L225 Difference]: With dead ends: 625 [2021-11-19 14:11:51,681 INFO L226 Difference]: Without dead ends: 474 [2021-11-19 14:11:51,681 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 [2021-11-19 14:11:51,682 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 76 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:51,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 392 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:11:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-19 14:11:52,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 460. [2021-11-19 14:11:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.2505446623093681) internal successors, (574), 459 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 574 transitions. [2021-11-19 14:11:52,735 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 574 transitions. Word has length 142 [2021-11-19 14:11:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:52,735 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 574 transitions. [2021-11-19 14:11:52,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 574 transitions. [2021-11-19 14:11:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 14:11:52,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:52,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:52,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-11-19 14:11:52,736 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:52,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash 529206757, now seen corresponding path program 1 times [2021-11-19 14:11:52,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:52,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129874105] [2021-11-19 14:11:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:52,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:52,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:52,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129874105] [2021-11-19 14:11:52,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129874105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:52,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:52,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:11:52,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044599770] [2021-11-19 14:11:52,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:52,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:11:52,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:52,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:11:52,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:11:52,808 INFO L87 Difference]: Start difference. First operand 460 states and 574 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:55,153 INFO L93 Difference]: Finished difference Result 1036 states and 1348 transitions. [2021-11-19 14:11:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:11:55,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-19 14:11:55,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:55,155 INFO L225 Difference]: With dead ends: 1036 [2021-11-19 14:11:55,155 INFO L226 Difference]: Without dead ends: 748 [2021-11-19 14:11:55,155 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 [2021-11-19 14:11:55,155 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 69 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:55,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 392 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:11:55,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-11-19 14:11:57,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 722. [2021-11-19 14:11:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 1.2815533980582525) internal successors, (924), 721 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:57,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 924 transitions. [2021-11-19 14:11:57,244 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 924 transitions. Word has length 145 [2021-11-19 14:11:57,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:57,244 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 924 transitions. [2021-11-19 14:11:57,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:11:57,244 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 924 transitions. [2021-11-19 14:11:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-19 14:11:57,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:57,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:11:57,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-11-19 14:11:57,245 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:11:57,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:57,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1168374263, now seen corresponding path program 1 times [2021-11-19 14:11:57,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:11:57,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724512893] [2021-11-19 14:11:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:57,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:11:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:11:57,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:11:57,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724512893] [2021-11-19 14:11:57,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724512893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:57,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:11:57,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:11:57,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230959480] [2021-11-19 14:11:57,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:57,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:11:57,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:11:57,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:11:57,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:11:57,316 INFO L87 Difference]: Start difference. First operand 722 states and 924 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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) [2021-11-19 14:12:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:12:01,576 INFO L93 Difference]: Finished difference Result 1822 states and 2398 transitions. [2021-11-19 14:12:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:12:01,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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 148 [2021-11-19 14:12:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:12:01,578 INFO L225 Difference]: With dead ends: 1822 [2021-11-19 14:12:01,578 INFO L226 Difference]: Without dead ends: 1272 [2021-11-19 14:12:01,579 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 [2021-11-19 14:12:01,579 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 62 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:12:01,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 392 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:12:01,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-11-19 14:12:05,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1222. [2021-11-19 14:12:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 1.3005733005733007) internal successors, (1588), 1221 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:12:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1588 transitions. [2021-11-19 14:12:05,668 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1588 transitions. Word has length 148 [2021-11-19 14:12:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:12:05,669 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1588 transitions. [2021-11-19 14:12:05,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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) [2021-11-19 14:12:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1588 transitions. [2021-11-19 14:12:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-19 14:12:05,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:12:05,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:12:05,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-11-19 14:12:05,670 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:12:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:12:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1220875874, now seen corresponding path program 1 times [2021-11-19 14:12:05,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:12:05,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583486613] [2021-11-19 14:12:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:12:05,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:12:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:12:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:12:05,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:12:05,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583486613] [2021-11-19 14:12:05,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583486613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:12:05,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:12:05,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:12:05,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807630118] [2021-11-19 14:12:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:12:05,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:12:05,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:12:05,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:12:05,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:12:05,735 INFO L87 Difference]: Start difference. First operand 1222 states and 1588 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:12:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:12:14,108 INFO L93 Difference]: Finished difference Result 3322 states and 4390 transitions. [2021-11-19 14:12:14,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:12:14,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-19 14:12:14,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:12:14,111 INFO L225 Difference]: With dead ends: 3322 [2021-11-19 14:12:14,111 INFO L226 Difference]: Without dead ends: 2272 [2021-11-19 14:12:14,112 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 [2021-11-19 14:12:14,113 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 55 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:12:14,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 392 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:12:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2021-11-19 14:12:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2174. [2021-11-19 14:12:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 2173 states have (on average 1.3087896916705015) internal successors, (2844), 2173 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:12:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 2844 transitions. [2021-11-19 14:12:21,995 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 2844 transitions. Word has length 151 [2021-11-19 14:12:21,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:12:21,996 INFO L470 AbstractCegarLoop]: Abstraction has 2174 states and 2844 transitions. [2021-11-19 14:12:21,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:12:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 2844 transitions. [2021-11-19 14:12:21,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-19 14:12:21,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:12:21,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:12:21,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-11-19 14:12:21,997 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:12:21,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:12:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1510968446, now seen corresponding path program 1 times [2021-11-19 14:12:21,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:12:21,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897954651] [2021-11-19 14:12:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:12:21,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:12:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:12:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:12:22,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:12:22,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897954651] [2021-11-19 14:12:22,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897954651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:12:22,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:12:22,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:12:22,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942465109] [2021-11-19 14:12:22,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:12:22,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:12:22,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:12:22,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:12:22,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:12:22,078 INFO L87 Difference]: Start difference. First operand 2174 states and 2844 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:12:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:12:37,699 INFO L93 Difference]: Finished difference Result 6178 states and 8158 transitions. [2021-11-19 14:12:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:12:37,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-19 14:12:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:12:37,705 INFO L225 Difference]: With dead ends: 6178 [2021-11-19 14:12:37,705 INFO L226 Difference]: Without dead ends: 4176 [2021-11-19 14:12:37,707 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 [2021-11-19 14:12:37,708 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 48 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:12:37,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 392 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:12:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-11-19 14:12:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3982. [2021-11-19 14:12:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3981 states have (on average 1.3092187892489324) internal successors, (5212), 3981 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:12:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 5212 transitions. [2021-11-19 14:12:53,381 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 5212 transitions. Word has length 154 [2021-11-19 14:12:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:12:53,381 INFO L470 AbstractCegarLoop]: Abstraction has 3982 states and 5212 transitions. [2021-11-19 14:12:53,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:12:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 5212 transitions. [2021-11-19 14:12:53,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 14:12:53,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:12:53,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:12:53,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-11-19 14:12:53,383 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:12:53,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:12:53,384 INFO L85 PathProgramCache]: Analyzing trace with hash 59275489, now seen corresponding path program 1 times [2021-11-19 14:12:53,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:12:53,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741191888] [2021-11-19 14:12:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:12:53,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:12:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:12:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:12:53,448 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:12:53,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741191888] [2021-11-19 14:12:53,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741191888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:12:53,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:12:53,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:12:53,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963323187] [2021-11-19 14:12:53,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:12:53,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:12:53,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:12:53,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:12:53,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:12:53,451 INFO L87 Difference]: Start difference. First operand 3982 states and 5212 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:13:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:13:23,709 INFO L93 Difference]: Finished difference Result 11602 states and 15262 transitions. [2021-11-19 14:13:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:13:23,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-19 14:13:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:13:23,719 INFO L225 Difference]: With dead ends: 11602 [2021-11-19 14:13:23,719 INFO L226 Difference]: Without dead ends: 7792 [2021-11-19 14:13:23,723 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 [2021-11-19 14:13:23,723 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 38 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:13:23,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 392 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:13:23,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2021-11-19 14:13:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7406. [2021-11-19 14:13:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7406 states, 7405 states have (on average 1.3045239702903444) internal successors, (9660), 7405 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:13:47,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7406 states to 7406 states and 9660 transitions. [2021-11-19 14:13:47,239 INFO L78 Accepts]: Start accepts. Automaton has 7406 states and 9660 transitions. Word has length 157 [2021-11-19 14:13:47,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:13:47,239 INFO L470 AbstractCegarLoop]: Abstraction has 7406 states and 9660 transitions. [2021-11-19 14:13:47,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:13:47,239 INFO L276 IsEmpty]: Start isEmpty. Operand 7406 states and 9660 transitions. [2021-11-19 14:13:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-19 14:13:47,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:13:47,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:13:47,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-11-19 14:13:47,240 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:13:47,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:13:47,240 INFO L85 PathProgramCache]: Analyzing trace with hash -79513788, now seen corresponding path program 1 times [2021-11-19 14:13:47,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:13:47,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685084604] [2021-11-19 14:13:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:13:47,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:13:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:13:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:13:47,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:13:47,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685084604] [2021-11-19 14:13:47,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685084604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:13:47,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:13:47,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:13:47,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400977028] [2021-11-19 14:13:47,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:13:47,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:13:47,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:13:47,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:13:47,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:13:47,334 INFO L87 Difference]: Start difference. First operand 7406 states and 9660 transitions. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:14:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:55,886 INFO L93 Difference]: Finished difference Result 29917 states and 39321 transitions. [2021-11-19 14:14:55,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:14:55,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have 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 [2021-11-19 14:14:55,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:55,914 INFO L225 Difference]: With dead ends: 29917 [2021-11-19 14:14:55,914 INFO L226 Difference]: Without dead ends: 22683 [2021-11-19 14:14:55,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:14:55,922 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 1559 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 3158 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:55,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 3158 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:14:55,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22683 states. [2021-11-19 14:15:27,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22683 to 10088. [2021-11-19 14:15:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10088 states, 10087 states have (on average 1.2996926737384753) internal successors, (13110), 10087 states have internal predecessors, (13110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:15:27,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10088 states to 10088 states and 13110 transitions. [2021-11-19 14:15:27,437 INFO L78 Accepts]: Start accepts. Automaton has 10088 states and 13110 transitions. Word has length 160 [2021-11-19 14:15:27,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:27,437 INFO L470 AbstractCegarLoop]: Abstraction has 10088 states and 13110 transitions. [2021-11-19 14:15:27,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:15:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 10088 states and 13110 transitions. [2021-11-19 14:15:27,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-19 14:15:27,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:27,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:27,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-11-19 14:15:27,438 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 14:15:27,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash 462937350, now seen corresponding path program 1 times [2021-11-19 14:15:27,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:15:27,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649923044] [2021-11-19 14:15:27,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:27,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:15:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:27,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:15:27,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:15:27,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649923044] [2021-11-19 14:15:27,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649923044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:27,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:27,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:15:27,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025858081] [2021-11-19 14:15:27,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:27,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:15:27,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:15:27,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:15:27,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:15:27,715 INFO L87 Difference]: Start difference. First operand 10088 states and 13110 transitions. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:15:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:58,795 INFO L93 Difference]: Finished difference Result 20006 states and 26034 transitions. [2021-11-19 14:15:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:15:58,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-19 14:15:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:58,806 INFO L225 Difference]: With dead ends: 20006 [2021-11-19 14:15:58,806 INFO L226 Difference]: Without dead ends: 10090 [2021-11-19 14:15:58,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:15:58,813 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 920 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:58,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 611 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:15:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10090 states.