./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+sep-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_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/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_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/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_800eba66-9ee8-42c0-8244-90cb1d82950f/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 ea86972a210f89fc9e3e5afc5e01f00ca5c135dc207351adf2f98bafbd9a008a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:48:42,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:48:42,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:48:42,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:48:42,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:48:42,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:48:42,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:48:42,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:48:42,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:48:42,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:48:42,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:48:42,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:48:42,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:48:42,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:48:42,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:48:42,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:48:42,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:48:42,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:48:42,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:48:42,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:48:42,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:48:42,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:48:42,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:48:42,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:48:42,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:48:42,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:48:42,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:48:42,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:48:42,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:48:42,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:48:42,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:48:42,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:48:42,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:48:42,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:48:42,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:48:42,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:48:42,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:48:42,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:48:42,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:48:42,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:48:42,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:48:42,838 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:48:42,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:48:42,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:48:42,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:48:42,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:48:42,896 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:48:42,896 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:48:42,896 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:48:42,897 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:48:42,897 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:48:42,897 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:48:42,906 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:48:42,907 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:48:42,907 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:48:42,907 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:48:42,908 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:48:42,908 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:48:42,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:48:42,909 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:48:42,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:48:42,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:48:42,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:48:42,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:48:42,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:48:42,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:48:42,911 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:48:42,912 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:48:42,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:48:42,912 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:48:42,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:48:42,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:48:42,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:48:42,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:48:42,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:48:42,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:48:42,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:48:42,917 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:48:42,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:48:42,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:48:42,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:48:42,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:48:42,918 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_800eba66-9ee8-42c0-8244-90cb1d82950f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea86972a210f89fc9e3e5afc5e01f00ca5c135dc207351adf2f98bafbd9a008a [2021-11-19 15:48:43,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:48:43,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:48:43,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:48:43,299 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:48:43,300 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:48:43,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-19 15:48:43,409 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs/data/99056d48b/986a3062b17846f4a1fbfe433da7bc2f/FLAG7f8022dd7 [2021-11-19 15:48:44,928 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:48:44,930 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-19 15:48:45,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs/data/99056d48b/986a3062b17846f4a1fbfe433da7bc2f/FLAG7f8022dd7 [2021-11-19 15:48:45,452 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs/data/99056d48b/986a3062b17846f4a1fbfe433da7bc2f [2021-11-19 15:48:45,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:48:45,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:48:45,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:48:45,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:48:45,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:48:45,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:48:45" (1/1) ... [2021-11-19 15:48:45,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b42b976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:45, skipping insertion in model container [2021-11-19 15:48:45,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:48:45" (1/1) ... [2021-11-19 15:48:45,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:48:46,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:48:47,891 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[147376,147389] [2021-11-19 15:48:48,315 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[216640,216653] [2021-11-19 15:48:48,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[251269,251282] [2021-11-19 15:48:48,612 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[268618,268631] [2021-11-19 15:48:48,660 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[277293,277306] [2021-11-19 15:48:48,685 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[281602,281615] [2021-11-19 15:48:48,710 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[285742,285755] [2021-11-19 15:48:49,035 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[353833,353846] [2021-11-19 15:48:49,201 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[387694,387707] [2021-11-19 15:48:49,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[404802,404815] [2021-11-19 15:48:49,329 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[413481,413494] [2021-11-19 15:48:49,352 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[417791,417804] [2021-11-19 15:48:49,375 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[421932,421945] [2021-11-19 15:48:49,539 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[456014,456027] [2021-11-19 15:48:49,619 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[473125,473138] [2021-11-19 15:48:49,700 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[481792,481805] [2021-11-19 15:48:49,730 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[486086,486099] [2021-11-19 15:48:49,755 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[490211,490224] [2021-11-19 15:48:49,877 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[508509,508522] [2021-11-19 15:48:49,947 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[517152,517165] [2021-11-19 15:48:49,970 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[521446,521459] [2021-11-19 15:48:50,002 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[525571,525584] [2021-11-19 15:48:50,034 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[530444,530457] [2021-11-19 15:48:50,057 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[534605,534618] [2021-11-19 15:48:50,079 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[538899,538912] [2021-11-19 15:48:50,110 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[543024,543037] [2021-11-19 15:48:50,134 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[547518,547531] [2021-11-19 15:48:50,158 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[551659,551672] [2021-11-19 15:48:50,181 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[555964,555977] [2021-11-19 15:48:50,284 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:48:50,305 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:48:51,043 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[147376,147389] [2021-11-19 15:48:51,470 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[216640,216653] [2021-11-19 15:48:51,615 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[251269,251282] [2021-11-19 15:48:51,687 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[268618,268631] [2021-11-19 15:48:51,725 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[277293,277306] [2021-11-19 15:48:51,745 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[281602,281615] [2021-11-19 15:48:51,764 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[285742,285755] [2021-11-19 15:48:52,033 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[353833,353846] [2021-11-19 15:48:52,167 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[387694,387707] [2021-11-19 15:48:52,238 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[404802,404815] [2021-11-19 15:48:52,276 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[413481,413494] [2021-11-19 15:48:52,295 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[417791,417804] [2021-11-19 15:48:52,313 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[421932,421945] [2021-11-19 15:48:52,448 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[456014,456027] [2021-11-19 15:48:52,518 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[473125,473138] [2021-11-19 15:48:52,556 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[481792,481805] [2021-11-19 15:48:52,576 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[486086,486099] [2021-11-19 15:48:52,596 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[490211,490224] [2021-11-19 15:48:52,674 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[508509,508522] [2021-11-19 15:48:52,711 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[517152,517165] [2021-11-19 15:48:52,730 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[521446,521459] [2021-11-19 15:48:52,750 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[525571,525584] [2021-11-19 15:48:52,772 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[530444,530457] [2021-11-19 15:48:52,791 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[534605,534618] [2021-11-19 15:48:52,811 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[538899,538912] [2021-11-19 15:48:52,830 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[543024,543037] [2021-11-19 15:48:52,851 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[547518,547531] [2021-11-19 15:48:52,869 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[551659,551672] [2021-11-19 15:48:52,889 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_800eba66-9ee8-42c0-8244-90cb1d82950f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[555964,555977] [2021-11-19 15:48:52,956 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:48:53,025 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:48:53,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53 WrapperNode [2021-11-19 15:48:53,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:48:53,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:48:53,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:48:53,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:48:53,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53" (1/1) ... [2021-11-19 15:48:53,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53" (1/1) ... [2021-11-19 15:48:53,612 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24436 [2021-11-19 15:48:53,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:48:53,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:48:53,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:48:53,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:48:53,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53" (1/1) ... [2021-11-19 15:48:53,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53" (1/1) ... [2021-11-19 15:48:53,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53" (1/1) ... [2021-11-19 15:48:53,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53" (1/1) ... [2021-11-19 15:48:53,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53" (1/1) ... [2021-11-19 15:48:54,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53" (1/1) ... [2021-11-19 15:48:54,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53" (1/1) ... [2021-11-19 15:48:54,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:48:54,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:48:54,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:48:54,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:48:54,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53" (1/1) ... [2021-11-19 15:48:54,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:48:54,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:48:54,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:48:54,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_800eba66-9ee8-42c0-8244-90cb1d82950f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:48:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:48:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 15:48:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:48:54,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:48:55,108 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:48:55,110 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:49:07,473 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:49:08,835 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:49:08,835 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 15:49:08,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:49:08 BoogieIcfgContainer [2021-11-19 15:49:08,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:49:08,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:49:08,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:49:08,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:49:08,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:48:45" (1/3) ... [2021-11-19 15:49:08,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bc1a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:49:08, skipping insertion in model container [2021-11-19 15:49:08,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:53" (2/3) ... [2021-11-19 15:49:08,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bc1a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:49:08, skipping insertion in model container [2021-11-19 15:49:08,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:49:08" (3/3) ... [2021-11-19 15:49:08,857 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-19 15:49:08,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:49:08,864 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-19 15:49:08,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:49:08,958 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 15:49:08,959 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-19 15:49:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 4942 states, 4912 states have (on average 1.8167752442996743) internal successors, (8924), 4941 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:09,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 15:49:09,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:09,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:09,158 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:09,165 INFO L85 PathProgramCache]: Analyzing trace with hash -647506740, now seen corresponding path program 1 times [2021-11-19 15:49:09,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:09,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176182154] [2021-11-19 15:49:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:09,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:10,168 INFO 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 15:49:10,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:10,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176182154] [2021-11-19 15:49:10,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176182154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:10,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:10,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 15:49:10,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502506034] [2021-11-19 15:49:10,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:10,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:10,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:10,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:49:10,237 INFO L87 Difference]: Start difference. First operand has 4942 states, 4912 states have (on average 1.8167752442996743) internal successors, (8924), 4941 states have internal predecessors, (8924), 0 states have call successors, (0), 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 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 15:49:16,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:16,564 INFO L93 Difference]: Finished difference Result 6712 states and 11941 transitions. [2021-11-19 15:49:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:49:16,567 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 15:49:16,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:16,613 INFO L225 Difference]: With dead ends: 6712 [2021-11-19 15:49:16,613 INFO L226 Difference]: Without dead ends: 4428 [2021-11-19 15:49:16,624 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 15:49:16,628 INFO L933 BasicCegarLoop]: 3746 mSDtfsCounter, 23048 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4069 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23048 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 4328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 4069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:16,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23048 Valid, 3850 Invalid, 4328 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [259 Valid, 4069 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-19 15:49:16,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2021-11-19 15:49:16,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4428. [2021-11-19 15:49:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4399 states have (on average 1.320527392589225) internal successors, (5809), 4427 states have internal predecessors, (5809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 5809 transitions. [2021-11-19 15:49:16,893 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 5809 transitions. Word has length 100 [2021-11-19 15:49:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:16,894 INFO L470 AbstractCegarLoop]: Abstraction has 4428 states and 5809 transitions. [2021-11-19 15:49:16,895 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 15:49:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 5809 transitions. [2021-11-19 15:49:16,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 15:49:16,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:16,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:16,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 15:49:16,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:16,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:16,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1462923221, now seen corresponding path program 1 times [2021-11-19 15:49:16,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:16,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236587474] [2021-11-19 15:49:16,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:16,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:17,281 INFO 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 15:49:17,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:17,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236587474] [2021-11-19 15:49:17,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236587474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:17,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:17,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 15:49:17,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656086460] [2021-11-19 15:49:17,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:17,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:17,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:17,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:17,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:49:17,285 INFO L87 Difference]: Start difference. First operand 4428 states and 5809 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 15:49:20,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:20,947 INFO L93 Difference]: Finished difference Result 5424 states and 7099 transitions. [2021-11-19 15:49:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:49:20,947 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 15:49:20,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:20,970 INFO L225 Difference]: With dead ends: 5424 [2021-11-19 15:49:20,970 INFO L226 Difference]: Without dead ends: 3224 [2021-11-19 15:49:20,975 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 15:49:20,977 INFO L933 BasicCegarLoop]: 1742 mSDtfsCounter, 12673 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12673 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 2647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:20,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12673 Valid, 1762 Invalid, 2647 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 15:49:20,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2021-11-19 15:49:21,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 3224. [2021-11-19 15:49:21,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 3195 states have (on average 1.3408450704225352) internal successors, (4284), 3223 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 4284 transitions. [2021-11-19 15:49:21,136 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 4284 transitions. Word has length 100 [2021-11-19 15:49:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:21,137 INFO L470 AbstractCegarLoop]: Abstraction has 3224 states and 4284 transitions. [2021-11-19 15:49:21,138 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 15:49:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 4284 transitions. [2021-11-19 15:49:21,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 15:49:21,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:21,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:21,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 15:49:21,149 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:21,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:21,150 INFO L85 PathProgramCache]: Analyzing trace with hash -2017308726, now seen corresponding path program 1 times [2021-11-19 15:49:21,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:21,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996692301] [2021-11-19 15:49:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:21,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:21,335 INFO 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 15:49:21,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:21,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996692301] [2021-11-19 15:49:21,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996692301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:21,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:21,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 15:49:21,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784897360] [2021-11-19 15:49:21,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:21,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:21,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:21,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:21,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:49:21,339 INFO L87 Difference]: Start difference. First operand 3224 states and 4284 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 15:49:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:24,045 INFO L93 Difference]: Finished difference Result 3964 states and 5221 transitions. [2021-11-19 15:49:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:49:24,046 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 15:49:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:24,062 INFO L225 Difference]: With dead ends: 3964 [2021-11-19 15:49:24,062 INFO L226 Difference]: Without dead ends: 2372 [2021-11-19 15:49:24,068 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 15:49:24,080 INFO L933 BasicCegarLoop]: 1314 mSDtfsCounter, 9336 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9336 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:24,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9336 Valid, 1342 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 15:49:24,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2021-11-19 15:49:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2372. [2021-11-19 15:49:24,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2343 states have (on average 1.3551002987622707) internal successors, (3175), 2371 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 3175 transitions. [2021-11-19 15:49:24,213 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 3175 transitions. Word has length 100 [2021-11-19 15:49:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:24,214 INFO L470 AbstractCegarLoop]: Abstraction has 2372 states and 3175 transitions. [2021-11-19 15:49:24,215 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 15:49:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 3175 transitions. [2021-11-19 15:49:24,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 15:49:24,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:24,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:24,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 15:49:24,229 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2095450160, now seen corresponding path program 1 times [2021-11-19 15:49:24,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:24,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338625696] [2021-11-19 15:49:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:24,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:24,456 INFO 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 15:49:24,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:24,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338625696] [2021-11-19 15:49:24,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338625696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:24,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:24,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 15:49:24,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055335306] [2021-11-19 15:49:24,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:24,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:24,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:24,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:24,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:49:24,462 INFO L87 Difference]: Start difference. First operand 2372 states and 3175 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 15:49:27,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:27,887 INFO L93 Difference]: Finished difference Result 4487 states and 6035 transitions. [2021-11-19 15:49:27,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:49:27,888 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 15:49:27,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:27,912 INFO L225 Difference]: With dead ends: 4487 [2021-11-19 15:49:27,912 INFO L226 Difference]: Without dead ends: 3279 [2021-11-19 15:49:27,916 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 15:49:27,917 INFO L933 BasicCegarLoop]: 1310 mSDtfsCounter, 11635 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 2518 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11635 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:27,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11635 Valid, 1977 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2518 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 15:49:27,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-11-19 15:49:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3105. [2021-11-19 15:49:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 3076 states have (on average 1.3901170351105332) internal successors, (4276), 3104 states have internal predecessors, (4276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:28,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4276 transitions. [2021-11-19 15:49:28,158 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4276 transitions. Word has length 101 [2021-11-19 15:49:28,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:28,159 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 4276 transitions. [2021-11-19 15:49:28,159 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 15:49:28,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4276 transitions. [2021-11-19 15:49:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 15:49:28,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:28,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:28,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 15:49:28,170 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:28,170 INFO L85 PathProgramCache]: Analyzing trace with hash 503693287, now seen corresponding path program 1 times [2021-11-19 15:49:28,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:28,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391417198] [2021-11-19 15:49:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:28,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:28,315 INFO 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 15:49:28,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:28,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391417198] [2021-11-19 15:49:28,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391417198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:28,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:28,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 15:49:28,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807612333] [2021-11-19 15:49:28,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:28,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:28,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:28,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:28,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:49:28,318 INFO L87 Difference]: Start difference. First operand 3105 states and 4276 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 15:49:30,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:30,279 INFO L93 Difference]: Finished difference Result 4495 states and 6192 transitions. [2021-11-19 15:49:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:49:30,280 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 15:49:30,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:30,300 INFO L225 Difference]: With dead ends: 4495 [2021-11-19 15:49:30,300 INFO L226 Difference]: Without dead ends: 2902 [2021-11-19 15:49:30,304 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 15:49:30,305 INFO L933 BasicCegarLoop]: 1218 mSDtfsCounter, 8189 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8189 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:30,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8189 Valid, 1230 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 15:49:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2021-11-19 15:49:30,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2902. [2021-11-19 15:49:30,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2873 states have (on average 1.3988861816916116) internal successors, (4019), 2901 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 4019 transitions. [2021-11-19 15:49:30,538 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 4019 transitions. Word has length 102 [2021-11-19 15:49:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:30,540 INFO L470 AbstractCegarLoop]: Abstraction has 2902 states and 4019 transitions. [2021-11-19 15:49:30,541 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 15:49:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 4019 transitions. [2021-11-19 15:49:30,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 15:49:30,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:30,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:30,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 15:49:30,553 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:30,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:30,554 INFO L85 PathProgramCache]: Analyzing trace with hash -445604461, now seen corresponding path program 1 times [2021-11-19 15:49:30,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:30,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503808293] [2021-11-19 15:49:30,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:30,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:30,731 INFO 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 15:49:30,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:30,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503808293] [2021-11-19 15:49:30,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503808293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:30,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:30,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 15:49:30,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419196693] [2021-11-19 15:49:30,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:30,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:30,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:30,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:49:30,736 INFO L87 Difference]: Start difference. First operand 2902 states and 4019 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 15:49:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:32,066 INFO L93 Difference]: Finished difference Result 3227 states and 4379 transitions. [2021-11-19 15:49:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:49:32,067 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 15:49:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:32,081 INFO L225 Difference]: With dead ends: 3227 [2021-11-19 15:49:32,081 INFO L226 Difference]: Without dead ends: 1823 [2021-11-19 15:49:32,084 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 15:49:32,085 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 4906 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4906 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:32,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4906 Valid, 800 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 15:49:32,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2021-11-19 15:49:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1823. [2021-11-19 15:49:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1794 states have (on average 1.4057971014492754) internal successors, (2522), 1822 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2522 transitions. [2021-11-19 15:49:32,244 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2522 transitions. Word has length 103 [2021-11-19 15:49:32,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:32,245 INFO L470 AbstractCegarLoop]: Abstraction has 1823 states and 2522 transitions. [2021-11-19 15:49:32,245 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 15:49:32,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2522 transitions. [2021-11-19 15:49:32,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-19 15:49:32,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:32,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:32,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 15:49:32,253 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:32,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1151240352, now seen corresponding path program 1 times [2021-11-19 15:49:32,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:32,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357746599] [2021-11-19 15:49:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:32,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:32,475 INFO 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 15:49:32,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:32,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357746599] [2021-11-19 15:49:32,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357746599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:32,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:32,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 15:49:32,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079098488] [2021-11-19 15:49:32,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:32,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:32,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:32,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:49:32,482 INFO L87 Difference]: Start difference. First operand 1823 states and 2522 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 15:49:33,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:33,558 INFO L93 Difference]: Finished difference Result 2382 states and 3249 transitions. [2021-11-19 15:49:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:49:33,559 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 15:49:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:33,570 INFO L225 Difference]: With dead ends: 2382 [2021-11-19 15:49:33,570 INFO L226 Difference]: Without dead ends: 1441 [2021-11-19 15:49:33,573 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 15:49:33,574 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 3893 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3893 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:33,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3893 Valid, 710 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:49:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-11-19 15:49:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1441. [2021-11-19 15:49:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4157223796033995) internal successors, (1999), 1440 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1999 transitions. [2021-11-19 15:49:33,713 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1999 transitions. Word has length 104 [2021-11-19 15:49:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:33,714 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1999 transitions. [2021-11-19 15:49:33,714 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 15:49:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1999 transitions. [2021-11-19 15:49:33,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 15:49:33,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:33,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:33,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 15:49:33,724 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:33,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:33,726 INFO L85 PathProgramCache]: Analyzing trace with hash -858234937, now seen corresponding path program 1 times [2021-11-19 15:49:33,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:33,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631111315] [2021-11-19 15:49:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:33,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:34,019 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 15:49:34,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:34,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631111315] [2021-11-19 15:49:34,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631111315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:34,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:34,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:49:34,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696797029] [2021-11-19 15:49:34,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:34,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:49:34,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:34,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:49:34,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:49:34,023 INFO L87 Difference]: Start difference. First operand 1441 states and 1999 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 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 15:49:37,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:37,051 INFO L93 Difference]: Finished difference Result 2536 states and 3484 transitions. [2021-11-19 15:49:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:49:37,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 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 15:49:37,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:37,073 INFO L225 Difference]: With dead ends: 2536 [2021-11-19 15:49:37,073 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:49:37,075 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 15:49:37,076 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 3690 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 3027 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3690 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:37,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3690 Valid, 3218 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3027 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 15:49:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:49:37,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-19 15:49:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.415014164305949) internal successors, (1998), 1440 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1998 transitions. [2021-11-19 15:49:37,259 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1998 transitions. Word has length 105 [2021-11-19 15:49:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:37,260 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1998 transitions. [2021-11-19 15:49:37,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 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 15:49:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1998 transitions. [2021-11-19 15:49:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 15:49:37,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:37,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:37,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 15:49:37,266 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:37,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:37,267 INFO L85 PathProgramCache]: Analyzing trace with hash 831961254, now seen corresponding path program 1 times [2021-11-19 15:49:37,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:37,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518986223] [2021-11-19 15:49:37,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:37,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:37,512 INFO 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 15:49:37,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:37,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518986223] [2021-11-19 15:49:37,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518986223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:37,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:37,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:49:37,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831513536] [2021-11-19 15:49:37,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:37,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:49:37,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:37,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:49:37,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:49:37,517 INFO L87 Difference]: Start difference. First operand 1441 states and 1998 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 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 15:49:40,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:40,217 INFO L93 Difference]: Finished difference Result 2399 states and 3293 transitions. [2021-11-19 15:49:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:49:40,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 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 15:49:40,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:40,231 INFO L225 Difference]: With dead ends: 2399 [2021-11-19 15:49:40,231 INFO L226 Difference]: Without dead ends: 2097 [2021-11-19 15:49:40,233 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 15:49:40,234 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 4063 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4063 SdHoareTripleChecker+Valid, 3114 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:40,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4063 Valid, 3114 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 15:49:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-11-19 15:49:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1441. [2021-11-19 15:49:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4143059490084986) internal successors, (1997), 1440 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:40,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1997 transitions. [2021-11-19 15:49:40,387 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1997 transitions. Word has length 105 [2021-11-19 15:49:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:40,388 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1997 transitions. [2021-11-19 15:49:40,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 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 15:49:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1997 transitions. [2021-11-19 15:49:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 15:49:40,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:40,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:40,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 15:49:40,393 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:40,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1921332485, now seen corresponding path program 1 times [2021-11-19 15:49:40,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:40,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778677523] [2021-11-19 15:49:40,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:40,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:40,661 INFO 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 15:49:40,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:40,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778677523] [2021-11-19 15:49:40,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778677523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:40,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:40,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 15:49:40,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623305296] [2021-11-19 15:49:40,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:40,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 15:49:40,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:40,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 15:49:40,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:49:40,664 INFO L87 Difference]: Start difference. First operand 1441 states and 1997 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 9 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 15:49:43,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:43,619 INFO L93 Difference]: Finished difference Result 2547 states and 3501 transitions. [2021-11-19 15:49:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:49:43,621 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 9 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 15:49:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:43,638 INFO L225 Difference]: With dead ends: 2547 [2021-11-19 15:49:43,638 INFO L226 Difference]: Without dead ends: 2399 [2021-11-19 15:49:43,640 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 15:49:43,641 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 5606 mSDsluCounter, 3800 mSDsCounter, 0 mSdLazyCounter, 4221 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5606 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 4320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 4221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:43,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5606 Valid, 4539 Invalid, 4320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 4221 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 15:49:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2021-11-19 15:49:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 1441. [2021-11-19 15:49:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4128895184135977) internal successors, (1995), 1440 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1995 transitions. [2021-11-19 15:49:43,801 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1995 transitions. Word has length 105 [2021-11-19 15:49:43,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:43,802 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1995 transitions. [2021-11-19 15:49:43,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 9 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 15:49:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1995 transitions. [2021-11-19 15:49:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 15:49:43,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:43,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:43,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 15:49:43,807 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:43,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:43,808 INFO L85 PathProgramCache]: Analyzing trace with hash -473288076, now seen corresponding path program 1 times [2021-11-19 15:49:43,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:43,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088771417] [2021-11-19 15:49:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:43,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:49:44,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:44,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088771417] [2021-11-19 15:49:44,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088771417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:44,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:44,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 15:49:44,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036176562] [2021-11-19 15:49:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:44,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:49:44,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:44,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:49:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:49:44,074 INFO L87 Difference]: Start difference. First operand 1441 states and 1995 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 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 15:49:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:46,371 INFO L93 Difference]: Finished difference Result 2419 states and 3211 transitions. [2021-11-19 15:49:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:49:46,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 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 15:49:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:46,381 INFO L225 Difference]: With dead ends: 2419 [2021-11-19 15:49:46,381 INFO L226 Difference]: Without dead ends: 1825 [2021-11-19 15:49:46,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:49:46,384 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 5176 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 2056 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5176 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:46,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5176 Valid, 1847 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2056 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 15:49:46,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2021-11-19 15:49:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1441. [2021-11-19 15:49:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4121813031161472) internal successors, (1994), 1440 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:46,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1994 transitions. [2021-11-19 15:49:46,577 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1994 transitions. Word has length 105 [2021-11-19 15:49:46,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:46,578 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1994 transitions. [2021-11-19 15:49:46,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 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 15:49:46,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1994 transitions. [2021-11-19 15:49:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 15:49:46,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:46,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:46,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 15:49:46,584 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:46,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:46,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2001025457, now seen corresponding path program 1 times [2021-11-19 15:49:46,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:46,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913270034] [2021-11-19 15:49:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:46,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:46,836 INFO 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 15:49:46,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:46,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913270034] [2021-11-19 15:49:46,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913270034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:46,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:46,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:49:46,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94488613] [2021-11-19 15:49:46,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:46,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:49:46,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:46,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:49:46,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:49:46,840 INFO L87 Difference]: Start difference. First operand 1441 states and 1994 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:49,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:49,399 INFO L93 Difference]: Finished difference Result 2744 states and 3783 transitions. [2021-11-19 15:49:49,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:49:49,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-19 15:49:49,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:49,404 INFO L225 Difference]: With dead ends: 2744 [2021-11-19 15:49:49,404 INFO L226 Difference]: Without dead ends: 2438 [2021-11-19 15:49:49,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:49:49,406 INFO L933 BasicCegarLoop]: 1059 mSDtfsCounter, 4451 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 3345 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4451 SdHoareTripleChecker+Valid, 3941 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:49,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4451 Valid, 3941 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3345 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:49:49,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-11-19 15:49:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1441. [2021-11-19 15:49:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4107648725212465) internal successors, (1992), 1440 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1992 transitions. [2021-11-19 15:49:49,554 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1992 transitions. Word has length 107 [2021-11-19 15:49:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:49,555 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1992 transitions. [2021-11-19 15:49:49,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1992 transitions. [2021-11-19 15:49:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 15:49:49,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:49,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:49,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 15:49:49,560 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:49,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:49,561 INFO L85 PathProgramCache]: Analyzing trace with hash -888908894, now seen corresponding path program 1 times [2021-11-19 15:49:49,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:49,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163464968] [2021-11-19 15:49:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:49,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:49:49,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:49,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163464968] [2021-11-19 15:49:49,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163464968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:49,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:49,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:49:49,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820848547] [2021-11-19 15:49:49,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:49,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:49:49,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:49:49,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:49:49,762 INFO L87 Difference]: Start difference. First operand 1441 states and 1992 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:52,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:52,347 INFO L93 Difference]: Finished difference Result 2629 states and 3618 transitions. [2021-11-19 15:49:52,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:49:52,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-19 15:49:52,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:52,353 INFO L225 Difference]: With dead ends: 2629 [2021-11-19 15:49:52,354 INFO L226 Difference]: Without dead ends: 2431 [2021-11-19 15:49:52,355 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 15:49:52,356 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 4292 mSDsluCounter, 3609 mSDsCounter, 0 mSdLazyCounter, 3965 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4292 SdHoareTripleChecker+Valid, 4530 SdHoareTripleChecker+Invalid, 4003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:52,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4292 Valid, 4530 Invalid, 4003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3965 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:49:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-19 15:49:52,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-19 15:49:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4093484419263456) internal successors, (1990), 1440 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1990 transitions. [2021-11-19 15:49:52,494 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1990 transitions. Word has length 107 [2021-11-19 15:49:52,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:52,494 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1990 transitions. [2021-11-19 15:49:52,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:52,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1990 transitions. [2021-11-19 15:49:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 15:49:52,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:52,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:52,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 15:49:52,498 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:52,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:52,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1567068468, now seen corresponding path program 1 times [2021-11-19 15:49:52,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:52,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121850992] [2021-11-19 15:49:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:52,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:52,650 INFO 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 15:49:52,650 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:52,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121850992] [2021-11-19 15:49:52,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121850992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:52,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:52,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:49:52,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029796808] [2021-11-19 15:49:52,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:52,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:49:52,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:52,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:49:52,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:49:52,653 INFO L87 Difference]: Start difference. First operand 1441 states and 1990 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:54,461 INFO L93 Difference]: Finished difference Result 2133 states and 2938 transitions. [2021-11-19 15:49:54,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 15:49:54,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-19 15:49:54,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:54,464 INFO L225 Difference]: With dead ends: 2133 [2021-11-19 15:49:54,464 INFO L226 Difference]: Without dead ends: 1553 [2021-11-19 15:49:54,466 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 15:49:54,466 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 4228 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4228 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:54,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4228 Valid, 2974 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2764 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 15:49:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-11-19 15:49:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1441. [2021-11-19 15:49:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4079320113314449) internal successors, (1988), 1440 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1988 transitions. [2021-11-19 15:49:54,567 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1988 transitions. Word has length 107 [2021-11-19 15:49:54,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:54,568 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1988 transitions. [2021-11-19 15:49:54,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1988 transitions. [2021-11-19 15:49:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 15:49:54,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:54,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:54,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 15:49:54,570 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1220519359, now seen corresponding path program 1 times [2021-11-19 15:49:54,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:54,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296941145] [2021-11-19 15:49:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:54,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:54,733 INFO 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 15:49:54,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:54,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296941145] [2021-11-19 15:49:54,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296941145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:54,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:54,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:49:54,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799319272] [2021-11-19 15:49:54,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:54,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:49:54,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:54,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:49:54,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:49:54,736 INFO L87 Difference]: Start difference. First operand 1441 states and 1988 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:57,304 INFO L93 Difference]: Finished difference Result 2580 states and 3542 transitions. [2021-11-19 15:49:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:49:57,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-19 15:49:57,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:57,310 INFO L225 Difference]: With dead ends: 2580 [2021-11-19 15:49:57,310 INFO L226 Difference]: Without dead ends: 2431 [2021-11-19 15:49:57,312 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 15:49:57,312 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 4261 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 3973 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4261 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 4011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:57,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4261 Valid, 4541 Invalid, 4011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3973 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:49:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-19 15:49:57,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-19 15:49:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4072237960339944) internal successors, (1987), 1440 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1987 transitions. [2021-11-19 15:49:57,475 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1987 transitions. Word has length 107 [2021-11-19 15:49:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:57,475 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1987 transitions. [2021-11-19 15:49:57,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1987 transitions. [2021-11-19 15:49:57,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 15:49:57,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:57,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:57,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 15:49:57,478 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:57,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:57,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1693218314, now seen corresponding path program 1 times [2021-11-19 15:49:57,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:57,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717298415] [2021-11-19 15:49:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:57,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:57,642 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 15:49:57,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:49:57,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717298415] [2021-11-19 15:49:57,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717298415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:57,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:57,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:49:57,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430726105] [2021-11-19 15:49:57,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:57,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:49:57,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:49:57,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:49:57,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:49:57,645 INFO L87 Difference]: Start difference. First operand 1441 states and 1987 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:59,759 INFO L93 Difference]: Finished difference Result 2536 states and 3472 transitions. [2021-11-19 15:49:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:49:59,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-19 15:49:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:59,764 INFO L225 Difference]: With dead ends: 2536 [2021-11-19 15:49:59,764 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:49:59,765 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 15:49:59,766 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 3460 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 3261 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3460 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:59,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3460 Valid, 3495 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3261 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 15:49:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:49:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-19 15:49:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.406515580736544) internal successors, (1986), 1440 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 15:49:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1986 transitions. [2021-11-19 15:49:59,877 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1986 transitions. Word has length 107 [2021-11-19 15:49:59,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:59,877 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1986 transitions. [2021-11-19 15:49:59,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:49:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1986 transitions. [2021-11-19 15:49:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 15:49:59,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:59,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:59,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 15:49:59,880 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:49:59,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1303943874, now seen corresponding path program 1 times [2021-11-19 15:49:59,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:49:59,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235905937] [2021-11-19 15:49:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:59,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:49:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:00,036 INFO 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 15:50:00,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:00,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235905937] [2021-11-19 15:50:00,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235905937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:00,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:00,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:00,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681410772] [2021-11-19 15:50:00,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:00,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:00,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:00,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:00,039 INFO L87 Difference]: Start difference. First operand 1441 states and 1986 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:02,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:02,208 INFO L93 Difference]: Finished difference Result 2545 states and 3479 transitions. [2021-11-19 15:50:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:50:02,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-19 15:50:02,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:02,213 INFO L225 Difference]: With dead ends: 2545 [2021-11-19 15:50:02,213 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:50:02,215 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 15:50:02,216 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 3662 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 3115 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:02,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3662 Valid, 3397 Invalid, 3180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3115 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 15:50:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:50:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-19 15:50:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4058073654390935) internal successors, (1985), 1440 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 15:50:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1985 transitions. [2021-11-19 15:50:02,402 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1985 transitions. Word has length 107 [2021-11-19 15:50:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:02,403 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1985 transitions. [2021-11-19 15:50:02,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1985 transitions. [2021-11-19 15:50:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 15:50:02,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:02,407 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] [2021-11-19 15:50:02,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 15:50:02,408 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash 368595971, now seen corresponding path program 1 times [2021-11-19 15:50:02,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:02,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355892718] [2021-11-19 15:50:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:02,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:02,579 INFO 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 15:50:02,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:02,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355892718] [2021-11-19 15:50:02,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355892718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:02,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:02,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:02,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475378655] [2021-11-19 15:50:02,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:02,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:02,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:02,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:02,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:02,582 INFO L87 Difference]: Start difference. First operand 1441 states and 1985 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:04,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:04,817 INFO L93 Difference]: Finished difference Result 2656 states and 3642 transitions. [2021-11-19 15:50:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:50:04,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-19 15:50:04,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:04,823 INFO L225 Difference]: With dead ends: 2656 [2021-11-19 15:50:04,824 INFO L226 Difference]: Without dead ends: 2438 [2021-11-19 15:50:04,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:50:04,827 INFO L933 BasicCegarLoop]: 1300 mSDtfsCounter, 4373 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 3819 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4373 SdHoareTripleChecker+Valid, 4671 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:04,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4373 Valid, 4671 Invalid, 3841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3819 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 15:50:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-11-19 15:50:05,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1441. [2021-11-19 15:50:05,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.405099150141643) internal successors, (1984), 1440 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 15:50:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1984 transitions. [2021-11-19 15:50:05,038 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1984 transitions. Word has length 107 [2021-11-19 15:50:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:05,039 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1984 transitions. [2021-11-19 15:50:05,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1984 transitions. [2021-11-19 15:50:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 15:50:05,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:05,042 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] [2021-11-19 15:50:05,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 15:50:05,043 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:05,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:05,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1279242644, now seen corresponding path program 1 times [2021-11-19 15:50:05,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:05,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631076657] [2021-11-19 15:50:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:05,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:05,257 INFO 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 15:50:05,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:05,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631076657] [2021-11-19 15:50:05,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631076657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:05,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:05,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:05,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110043490] [2021-11-19 15:50:05,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:05,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:05,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:05,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:05,261 INFO L87 Difference]: Start difference. First operand 1441 states and 1984 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:08,074 INFO L93 Difference]: Finished difference Result 2574 states and 3530 transitions. [2021-11-19 15:50:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:50:08,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-19 15:50:08,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:08,079 INFO L225 Difference]: With dead ends: 2574 [2021-11-19 15:50:08,079 INFO L226 Difference]: Without dead ends: 2431 [2021-11-19 15:50:08,080 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 15:50:08,081 INFO L933 BasicCegarLoop]: 1068 mSDtfsCounter, 4302 mSDsluCounter, 3857 mSDsCounter, 0 mSdLazyCounter, 4126 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4302 SdHoareTripleChecker+Valid, 4916 SdHoareTripleChecker+Invalid, 4164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:08,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4302 Valid, 4916 Invalid, 4164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4126 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 15:50:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-19 15:50:08,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-19 15:50:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4043909348441925) internal successors, (1983), 1440 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1983 transitions. [2021-11-19 15:50:08,260 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1983 transitions. Word has length 107 [2021-11-19 15:50:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:08,260 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1983 transitions. [2021-11-19 15:50:08,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:08,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1983 transitions. [2021-11-19 15:50:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 15:50:08,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:08,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:08,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 15:50:08,264 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:08,264 INFO L85 PathProgramCache]: Analyzing trace with hash -526193886, now seen corresponding path program 1 times [2021-11-19 15:50:08,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:08,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075272960] [2021-11-19 15:50:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:08,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:08,413 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 15:50:08,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:08,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075272960] [2021-11-19 15:50:08,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075272960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:08,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:08,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:08,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891300016] [2021-11-19 15:50:08,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:08,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:08,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:08,416 INFO L87 Difference]: Start difference. First operand 1441 states and 1983 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:10,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:10,542 INFO L93 Difference]: Finished difference Result 2636 states and 3620 transitions. [2021-11-19 15:50:10,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:50:10,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-19 15:50:10,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:10,547 INFO L225 Difference]: With dead ends: 2636 [2021-11-19 15:50:10,547 INFO L226 Difference]: Without dead ends: 2438 [2021-11-19 15:50:10,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:50:10,549 INFO L933 BasicCegarLoop]: 1390 mSDtfsCounter, 3142 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 4093 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3142 SdHoareTripleChecker+Valid, 5319 SdHoareTripleChecker+Invalid, 4112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:10,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3142 Valid, 5319 Invalid, 4112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 4093 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 15:50:10,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-11-19 15:50:10,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1441. [2021-11-19 15:50:10,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4036827195467423) internal successors, (1982), 1440 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 15:50:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1982 transitions. [2021-11-19 15:50:10,726 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1982 transitions. Word has length 107 [2021-11-19 15:50:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:10,727 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1982 transitions. [2021-11-19 15:50:10,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1982 transitions. [2021-11-19 15:50:10,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:10,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:10,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:10,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 15:50:10,732 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:10,732 INFO L85 PathProgramCache]: Analyzing trace with hash 526079636, now seen corresponding path program 1 times [2021-11-19 15:50:10,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:10,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784936923] [2021-11-19 15:50:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:10,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:10,889 INFO 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 15:50:10,890 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:10,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784936923] [2021-11-19 15:50:10,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784936923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:10,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:10,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:10,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117954878] [2021-11-19 15:50:10,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:10,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:10,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:10,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:10,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:10,893 INFO L87 Difference]: Start difference. First operand 1441 states and 1982 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:13,120 INFO L93 Difference]: Finished difference Result 2633 states and 3604 transitions. [2021-11-19 15:50:13,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:50:13,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:13,126 INFO L225 Difference]: With dead ends: 2633 [2021-11-19 15:50:13,126 INFO L226 Difference]: Without dead ends: 2431 [2021-11-19 15:50:13,128 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 15:50:13,129 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 3176 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3176 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:13,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3176 Valid, 4161 Invalid, 3839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3807 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 15:50:13,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-19 15:50:13,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1441. [2021-11-19 15:50:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.4022662889518414) internal successors, (1980), 1440 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 15:50:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1980 transitions. [2021-11-19 15:50:13,399 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1980 transitions. Word has length 109 [2021-11-19 15:50:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:13,399 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1980 transitions. [2021-11-19 15:50:13,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1980 transitions. [2021-11-19 15:50:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:13,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:13,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:13,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 15:50:13,403 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 15:50:13,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:13,404 INFO L85 PathProgramCache]: Analyzing trace with hash 796642855, now seen corresponding path program 1 times [2021-11-19 15:50:13,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:13,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465308059] [2021-11-19 15:50:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:13,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:13,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:13,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465308059] [2021-11-19 15:50:13,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465308059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:13,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:13,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 15:50:13,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533429602] [2021-11-19 15:50:13,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:13,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:50:13,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:13,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:50:13,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:50:13,666 INFO L87 Difference]: Start difference. First operand 1441 states and 1980 transitions. Second operand has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:17,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:17,663 INFO L93 Difference]: Finished difference Result 3225 states and 4396 transitions. [2021-11-19 15:50:17,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 15:50:17,664 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:17,668 INFO L225 Difference]: With dead ends: 3225 [2021-11-19 15:50:17,668 INFO L226 Difference]: Without dead ends: 3077 [2021-11-19 15:50:17,670 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 15:50:17,671 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 8458 mSDsluCounter, 4201 mSDsCounter, 0 mSdLazyCounter, 5023 mSolverCounterSat, 897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8458 SdHoareTripleChecker+Valid, 5133 SdHoareTripleChecker+Invalid, 5920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 897 IncrementalHoareTripleChecker+Valid, 5023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:17,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8458 Valid, 5133 Invalid, 5920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [897 Valid, 5023 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 15:50:17,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2021-11-19 15:50:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1449. [2021-11-19 15:50:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.4) internal successors, (1988), 1448 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1988 transitions. [2021-11-19 15:50:17,920 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1988 transitions. Word has length 109 [2021-11-19 15:50:17,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:17,921 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1988 transitions. [2021-11-19 15:50:17,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:17,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1988 transitions. [2021-11-19 15:50:17,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:17,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:17,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:17,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 15:50:17,926 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:17,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash -656947927, now seen corresponding path program 1 times [2021-11-19 15:50:17,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:17,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059573077] [2021-11-19 15:50:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:17,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:18,074 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 15:50:18,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:18,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059573077] [2021-11-19 15:50:18,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059573077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:18,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:18,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:18,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987594444] [2021-11-19 15:50:18,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:18,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:18,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:18,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:18,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:18,077 INFO L87 Difference]: Start difference. First operand 1449 states and 1988 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:20,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:20,423 INFO L93 Difference]: Finished difference Result 2551 states and 3486 transitions. [2021-11-19 15:50:20,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:50:20,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:20,426 INFO L225 Difference]: With dead ends: 2551 [2021-11-19 15:50:20,426 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:50:20,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:50:20,428 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 5040 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 3430 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5040 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 3522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:20,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5040 Valid, 3721 Invalid, 3522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3430 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 15:50:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:50:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1449. [2021-11-19 15:50:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.3985915492957746) internal successors, (1986), 1448 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 15:50:20,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1986 transitions. [2021-11-19 15:50:20,602 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1986 transitions. Word has length 109 [2021-11-19 15:50:20,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:20,602 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1986 transitions. [2021-11-19 15:50:20,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1986 transitions. [2021-11-19 15:50:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:20,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:20,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:20,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 15:50:20,607 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:20,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:20,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1633760465, now seen corresponding path program 1 times [2021-11-19 15:50:20,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:20,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482617791] [2021-11-19 15:50:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:20,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:20,762 INFO 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 15:50:20,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:20,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482617791] [2021-11-19 15:50:20,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482617791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:20,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:20,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:20,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538757136] [2021-11-19 15:50:20,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:20,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:20,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:20,765 INFO L87 Difference]: Start difference. First operand 1449 states and 1986 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:23,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:23,101 INFO L93 Difference]: Finished difference Result 2559 states and 3493 transitions. [2021-11-19 15:50:23,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:50:23,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:23,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:23,105 INFO L225 Difference]: With dead ends: 2559 [2021-11-19 15:50:23,105 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:50:23,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:50:23,107 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 3335 mSDsluCounter, 2849 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3335 SdHoareTripleChecker+Valid, 3715 SdHoareTripleChecker+Invalid, 3487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:23,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3335 Valid, 3715 Invalid, 3487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 15:50:23,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:50:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1449. [2021-11-19 15:50:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.3971830985915492) internal successors, (1984), 1448 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 15:50:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1984 transitions. [2021-11-19 15:50:23,382 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1984 transitions. Word has length 109 [2021-11-19 15:50:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:23,383 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1984 transitions. [2021-11-19 15:50:23,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1984 transitions. [2021-11-19 15:50:23,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:23,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:23,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:23,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 15:50:23,387 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:23,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1910162385, now seen corresponding path program 1 times [2021-11-19 15:50:23,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:23,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239362084] [2021-11-19 15:50:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:23,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:23,548 INFO 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 15:50:23,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:23,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239362084] [2021-11-19 15:50:23,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239362084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:23,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:23,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:23,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430871858] [2021-11-19 15:50:23,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:23,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:23,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:23,551 INFO L87 Difference]: Start difference. First operand 1449 states and 1984 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:26,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:26,069 INFO L93 Difference]: Finished difference Result 2657 states and 3629 transitions. [2021-11-19 15:50:26,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:50:26,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:26,072 INFO L225 Difference]: With dead ends: 2657 [2021-11-19 15:50:26,072 INFO L226 Difference]: Without dead ends: 2439 [2021-11-19 15:50:26,073 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 15:50:26,074 INFO L933 BasicCegarLoop]: 1212 mSDtfsCounter, 4272 mSDsluCounter, 4045 mSDsCounter, 0 mSdLazyCounter, 4322 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4272 SdHoareTripleChecker+Valid, 5246 SdHoareTripleChecker+Invalid, 4360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:26,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4272 Valid, 5246 Invalid, 4360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4322 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 15:50:26,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2021-11-19 15:50:26,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1449. [2021-11-19 15:50:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.3957746478873239) internal successors, (1982), 1448 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 15:50:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1982 transitions. [2021-11-19 15:50:26,238 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1982 transitions. Word has length 109 [2021-11-19 15:50:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:26,238 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1982 transitions. [2021-11-19 15:50:26,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1982 transitions. [2021-11-19 15:50:26,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:26,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:26,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:26,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 15:50:26,243 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:26,244 INFO L85 PathProgramCache]: Analyzing trace with hash 136383870, now seen corresponding path program 1 times [2021-11-19 15:50:26,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:26,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462272975] [2021-11-19 15:50:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:26,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:26,383 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 15:50:26,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:26,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462272975] [2021-11-19 15:50:26,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462272975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:26,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:26,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:26,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549943406] [2021-11-19 15:50:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:26,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:26,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:26,386 INFO L87 Difference]: Start difference. First operand 1449 states and 1982 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:28,647 INFO L93 Difference]: Finished difference Result 2804 states and 3827 transitions. [2021-11-19 15:50:28,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:50:28,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:28,650 INFO L225 Difference]: With dead ends: 2804 [2021-11-19 15:50:28,650 INFO L226 Difference]: Without dead ends: 2446 [2021-11-19 15:50:28,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:50:28,652 INFO L933 BasicCegarLoop]: 1292 mSDtfsCounter, 3114 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 4157 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 4999 SdHoareTripleChecker+Invalid, 4172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:28,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3114 Valid, 4999 Invalid, 4172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4157 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 15:50:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2021-11-19 15:50:28,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 1449. [2021-11-19 15:50:28,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.3943661971830985) internal successors, (1980), 1448 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 15:50:28,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1980 transitions. [2021-11-19 15:50:28,839 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1980 transitions. Word has length 109 [2021-11-19 15:50:28,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:28,839 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1980 transitions. [2021-11-19 15:50:28,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:28,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1980 transitions. [2021-11-19 15:50:28,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:28,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:28,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:28,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-19 15:50:28,843 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:28,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1902132072, now seen corresponding path program 1 times [2021-11-19 15:50:28,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:28,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459721779] [2021-11-19 15:50:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:28,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:28,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:28,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459721779] [2021-11-19 15:50:28,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459721779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:28,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:28,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:28,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131050085] [2021-11-19 15:50:28,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:28,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:28,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:28,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:28,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:28,973 INFO L87 Difference]: Start difference. First operand 1449 states and 1980 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:31,443 INFO L93 Difference]: Finished difference Result 2607 states and 3550 transitions. [2021-11-19 15:50:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:50:31,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:31,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:31,446 INFO L225 Difference]: With dead ends: 2607 [2021-11-19 15:50:31,446 INFO L226 Difference]: Without dead ends: 2439 [2021-11-19 15:50:31,447 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 15:50:31,448 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 4318 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 4101 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4318 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 4147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:31,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4318 Valid, 4613 Invalid, 4147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4101 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 15:50:31,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2021-11-19 15:50:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1449. [2021-11-19 15:50:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.393661971830986) internal successors, (1979), 1448 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 15:50:31,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1979 transitions. [2021-11-19 15:50:31,659 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1979 transitions. Word has length 109 [2021-11-19 15:50:31,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:31,659 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1979 transitions. [2021-11-19 15:50:31,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:31,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1979 transitions. [2021-11-19 15:50:31,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:31,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:31,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:31,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 15:50:31,662 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash -528536602, now seen corresponding path program 1 times [2021-11-19 15:50:31,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:31,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130544676] [2021-11-19 15:50:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:31,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:31,893 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:31,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130544676] [2021-11-19 15:50:31,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130544676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:31,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:31,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 15:50:31,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072559358] [2021-11-19 15:50:31,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:31,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:50:31,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:50:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:50:31,895 INFO L87 Difference]: Start difference. First operand 1449 states and 1979 transitions. Second operand has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:35,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:35,830 INFO L93 Difference]: Finished difference Result 3172 states and 4309 transitions. [2021-11-19 15:50:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 15:50:35,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:35,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:35,833 INFO L225 Difference]: With dead ends: 3172 [2021-11-19 15:50:35,833 INFO L226 Difference]: Without dead ends: 3043 [2021-11-19 15:50:35,835 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 15:50:35,835 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 8077 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 4301 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8077 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 5146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 4301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:35,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8077 Valid, 4531 Invalid, 5146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 4301 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 15:50:35,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2021-11-19 15:50:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 1453. [2021-11-19 15:50:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1424 states have (on average 1.3925561797752808) internal successors, (1983), 1452 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1983 transitions. [2021-11-19 15:50:36,045 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1983 transitions. Word has length 109 [2021-11-19 15:50:36,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:36,046 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 1983 transitions. [2021-11-19 15:50:36,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1983 transitions. [2021-11-19 15:50:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:36,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:36,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:36,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 15:50:36,049 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:36,050 INFO L85 PathProgramCache]: Analyzing trace with hash -315244667, now seen corresponding path program 1 times [2021-11-19 15:50:36,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:36,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684491751] [2021-11-19 15:50:36,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:36,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:36,168 INFO 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 15:50:36,169 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:36,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684491751] [2021-11-19 15:50:36,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684491751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:36,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:36,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:36,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608872863] [2021-11-19 15:50:36,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:36,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:36,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:36,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:36,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:36,171 INFO L87 Difference]: Start difference. First operand 1453 states and 1983 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:38,321 INFO L93 Difference]: Finished difference Result 2526 states and 3439 transitions. [2021-11-19 15:50:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:50:38,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:38,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:38,324 INFO L225 Difference]: With dead ends: 2526 [2021-11-19 15:50:38,324 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:50:38,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:50:38,326 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 3169 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 3632 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3169 SdHoareTripleChecker+Valid, 4046 SdHoareTripleChecker+Invalid, 3691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:38,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3169 Valid, 4046 Invalid, 3691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3632 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 15:50:38,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:50:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1453. [2021-11-19 15:50:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1424 states have (on average 1.3918539325842696) internal successors, (1982), 1452 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 15:50:38,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1982 transitions. [2021-11-19 15:50:38,573 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1982 transitions. Word has length 109 [2021-11-19 15:50:38,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:38,574 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 1982 transitions. [2021-11-19 15:50:38,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:38,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1982 transitions. [2021-11-19 15:50:38,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:38,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:38,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:38,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 15:50:38,577 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:38,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:38,578 INFO L85 PathProgramCache]: Analyzing trace with hash -980676675, now seen corresponding path program 1 times [2021-11-19 15:50:38,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:38,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457930512] [2021-11-19 15:50:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:38,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:38,702 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 15:50:38,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:38,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457930512] [2021-11-19 15:50:38,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457930512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:38,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:38,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:38,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494637487] [2021-11-19 15:50:38,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:38,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:38,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:38,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:38,705 INFO L87 Difference]: Start difference. First operand 1453 states and 1982 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:41,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:41,022 INFO L93 Difference]: Finished difference Result 2597 states and 3537 transitions. [2021-11-19 15:50:41,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:50:41,023 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:41,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:41,026 INFO L225 Difference]: With dead ends: 2597 [2021-11-19 15:50:41,027 INFO L226 Difference]: Without dead ends: 2443 [2021-11-19 15:50:41,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:50:41,029 INFO L933 BasicCegarLoop]: 1123 mSDtfsCounter, 4435 mSDsluCounter, 3478 mSDsCounter, 0 mSdLazyCounter, 4004 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4435 SdHoareTripleChecker+Valid, 4593 SdHoareTripleChecker+Invalid, 4051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:41,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4435 Valid, 4593 Invalid, 4051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 4004 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 15:50:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2021-11-19 15:50:41,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 1453. [2021-11-19 15:50:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1424 states have (on average 1.3911516853932584) internal successors, (1981), 1452 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 15:50:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1981 transitions. [2021-11-19 15:50:41,243 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1981 transitions. Word has length 109 [2021-11-19 15:50:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:41,243 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 1981 transitions. [2021-11-19 15:50:41,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1981 transitions. [2021-11-19 15:50:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:41,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:41,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:41,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-19 15:50:41,246 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:41,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1265384283, now seen corresponding path program 1 times [2021-11-19 15:50:41,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:41,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869347911] [2021-11-19 15:50:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:41,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:41,378 INFO 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 15:50:41,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:41,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869347911] [2021-11-19 15:50:41,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869347911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:41,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:41,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:41,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799987093] [2021-11-19 15:50:41,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:41,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:41,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:41,381 INFO L87 Difference]: Start difference. First operand 1453 states and 1981 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:43,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:43,938 INFO L93 Difference]: Finished difference Result 2531 states and 3445 transitions. [2021-11-19 15:50:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:50:43,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:43,941 INFO L225 Difference]: With dead ends: 2531 [2021-11-19 15:50:43,941 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:50:43,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:50:43,943 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 3075 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 3838 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3075 SdHoareTripleChecker+Valid, 4239 SdHoareTripleChecker+Invalid, 3894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:43,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3075 Valid, 4239 Invalid, 3894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3838 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 15:50:43,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:50:44,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1453. [2021-11-19 15:50:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1424 states have (on average 1.3904494382022472) internal successors, (1980), 1452 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 15:50:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1980 transitions. [2021-11-19 15:50:44,128 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1980 transitions. Word has length 109 [2021-11-19 15:50:44,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:44,128 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 1980 transitions. [2021-11-19 15:50:44,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1980 transitions. [2021-11-19 15:50:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 15:50:44,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:44,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:44,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-19 15:50:44,131 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:44,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:44,131 INFO L85 PathProgramCache]: Analyzing trace with hash 506409967, now seen corresponding path program 1 times [2021-11-19 15:50:44,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:44,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17150946] [2021-11-19 15:50:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:44,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:44,342 INFO 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 15:50:44,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:44,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17150946] [2021-11-19 15:50:44,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17150946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:44,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:44,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 15:50:44,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479732228] [2021-11-19 15:50:44,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:44,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:50:44,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:44,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:50:44,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:50:44,345 INFO L87 Difference]: Start difference. First operand 1453 states and 1980 transitions. Second operand has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:48,501 INFO L93 Difference]: Finished difference Result 3162 states and 4295 transitions. [2021-11-19 15:50:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 15:50:48,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-19 15:50:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:48,506 INFO L225 Difference]: With dead ends: 3162 [2021-11-19 15:50:48,507 INFO L226 Difference]: Without dead ends: 3038 [2021-11-19 15:50:48,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 15:50:48,510 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 7981 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 4706 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7981 SdHoareTripleChecker+Valid, 4952 SdHoareTripleChecker+Invalid, 5536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 4706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:48,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7981 Valid, 4952 Invalid, 5536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 4706 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 15:50:48,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2021-11-19 15:50:48,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 1457. [2021-11-19 15:50:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1428 states have (on average 1.3893557422969187) internal successors, (1984), 1456 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 15:50:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1984 transitions. [2021-11-19 15:50:48,732 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1984 transitions. Word has length 109 [2021-11-19 15:50:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:48,733 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1984 transitions. [2021-11-19 15:50:48,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1984 transitions. [2021-11-19 15:50:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 15:50:48,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:48,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:48,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-19 15:50:48,735 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1783270661, now seen corresponding path program 1 times [2021-11-19 15:50:48,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:48,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823055725] [2021-11-19 15:50:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:48,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:48,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:48,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823055725] [2021-11-19 15:50:48,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823055725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:48,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:48,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:48,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297347872] [2021-11-19 15:50:48,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:48,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:48,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:48,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:48,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:48,876 INFO L87 Difference]: Start difference. First operand 1457 states and 1984 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 15:50:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:51,453 INFO L93 Difference]: Finished difference Result 2555 states and 3475 transitions. [2021-11-19 15:50:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:50:51,453 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 15:50:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:51,456 INFO L225 Difference]: With dead ends: 2555 [2021-11-19 15:50:51,456 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:50:51,456 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 15:50:51,457 INFO L933 BasicCegarLoop]: 1011 mSDtfsCounter, 3109 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 3771 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3109 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 3829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:51,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3109 Valid, 4188 Invalid, 3829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3771 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 15:50:51,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:50:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1449. [2021-11-19 15:50:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.3901408450704225) internal successors, (1974), 1448 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 15:50:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1974 transitions. [2021-11-19 15:50:51,645 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1974 transitions. Word has length 110 [2021-11-19 15:50:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:51,645 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1974 transitions. [2021-11-19 15:50:51,645 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 15:50:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1974 transitions. [2021-11-19 15:50:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 15:50:51,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:51,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:51,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-19 15:50:51,648 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1892703037, now seen corresponding path program 1 times [2021-11-19 15:50:51,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:51,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531152470] [2021-11-19 15:50:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:51,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:51,778 INFO 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 15:50:51,779 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:51,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531152470] [2021-11-19 15:50:51,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531152470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:51,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:51,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:51,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942516023] [2021-11-19 15:50:51,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:51,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:51,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:51,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:51,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:51,781 INFO L87 Difference]: Start difference. First operand 1449 states and 1974 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 15:50:54,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:54,503 INFO L93 Difference]: Finished difference Result 2536 states and 3446 transitions. [2021-11-19 15:50:54,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:50:54,503 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 15:50:54,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:54,506 INFO L225 Difference]: With dead ends: 2536 [2021-11-19 15:50:54,506 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:50:54,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:50:54,508 INFO L933 BasicCegarLoop]: 1030 mSDtfsCounter, 4490 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 3858 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4490 SdHoareTripleChecker+Valid, 4284 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:54,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4490 Valid, 4284 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3858 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 15:50:54,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:50:54,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1445. [2021-11-19 15:50:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1416 states have (on average 1.390536723163842) internal successors, (1969), 1444 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 15:50:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1969 transitions. [2021-11-19 15:50:54,715 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1969 transitions. Word has length 110 [2021-11-19 15:50:54,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:54,716 INFO L470 AbstractCegarLoop]: Abstraction has 1445 states and 1969 transitions. [2021-11-19 15:50:54,716 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 15:50:54,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1969 transitions. [2021-11-19 15:50:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 15:50:54,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:54,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:54,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-19 15:50:54,720 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:54,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1991662946, now seen corresponding path program 1 times [2021-11-19 15:50:54,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:54,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533783472] [2021-11-19 15:50:54,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:54,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:54,886 INFO 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 15:50:54,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:54,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533783472] [2021-11-19 15:50:54,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533783472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:54,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:54,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:54,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940554740] [2021-11-19 15:50:54,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:54,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:54,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:54,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:54,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:54,889 INFO L87 Difference]: Start difference. First operand 1445 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 15:50:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:57,677 INFO L93 Difference]: Finished difference Result 2525 states and 3431 transitions. [2021-11-19 15:50:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:50:57,678 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 15:50:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:57,681 INFO L225 Difference]: With dead ends: 2525 [2021-11-19 15:50:57,681 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:50:57,682 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 15:50:57,682 INFO L933 BasicCegarLoop]: 1167 mSDtfsCounter, 4367 mSDsluCounter, 3984 mSDsCounter, 0 mSdLazyCounter, 4113 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4367 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 4180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:57,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4367 Valid, 5142 Invalid, 4180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4113 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:50:57,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:50:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1445. [2021-11-19 15:50:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1416 states have (on average 1.3898305084745763) internal successors, (1968), 1444 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 15:50:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1968 transitions. [2021-11-19 15:50:57,907 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1968 transitions. Word has length 110 [2021-11-19 15:50:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:57,907 INFO L470 AbstractCegarLoop]: Abstraction has 1445 states and 1968 transitions. [2021-11-19 15:50:57,907 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 15:50:57,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1968 transitions. [2021-11-19 15:50:57,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 15:50:57,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:57,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:57,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-19 15:50:57,911 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:50:57,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:57,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1218250696, now seen corresponding path program 1 times [2021-11-19 15:50:57,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:57,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908705598] [2021-11-19 15:50:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:57,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:58,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:58,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908705598] [2021-11-19 15:50:58,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908705598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:58,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:58,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:50:58,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309237533] [2021-11-19 15:50:58,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:58,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:58,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:58,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:58,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:58,072 INFO L87 Difference]: Start difference. First operand 1445 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 15:51:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:00,985 INFO L93 Difference]: Finished difference Result 2469 states and 3338 transitions. [2021-11-19 15:51:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:51:00,986 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 15:51:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:00,988 INFO L225 Difference]: With dead ends: 2469 [2021-11-19 15:51:00,988 INFO L226 Difference]: Without dead ends: 2363 [2021-11-19 15:51:00,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:51:00,989 INFO L933 BasicCegarLoop]: 1044 mSDtfsCounter, 2942 mSDsluCounter, 3688 mSDsCounter, 0 mSdLazyCounter, 4049 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 4721 SdHoareTripleChecker+Invalid, 4137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 4049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:00,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2942 Valid, 4721 Invalid, 4137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 4049 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:51:00,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2021-11-19 15:51:01,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2021-11-19 15:51:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1416 states have (on average 1.3891242937853108) internal successors, (1967), 1444 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 15:51:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1967 transitions. [2021-11-19 15:51:01,217 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1967 transitions. Word has length 110 [2021-11-19 15:51:01,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:01,217 INFO L470 AbstractCegarLoop]: Abstraction has 1445 states and 1967 transitions. [2021-11-19 15:51:01,217 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 15:51:01,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1967 transitions. [2021-11-19 15:51:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 15:51:01,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:01,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:01,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-19 15:51:01,220 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:01,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2146512009, now seen corresponding path program 1 times [2021-11-19 15:51:01,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:01,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774869601] [2021-11-19 15:51:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:01,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:01,369 INFO 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 15:51:01,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:01,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774869601] [2021-11-19 15:51:01,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774869601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:01,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:01,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:01,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116286218] [2021-11-19 15:51:01,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:01,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:01,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:01,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:01,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:01,372 INFO L87 Difference]: Start difference. First operand 1445 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 15:51:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:04,276 INFO L93 Difference]: Finished difference Result 2531 states and 3438 transitions. [2021-11-19 15:51:04,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:51:04,276 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 15:51:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:04,279 INFO L225 Difference]: With dead ends: 2531 [2021-11-19 15:51:04,280 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:51:04,281 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 15:51:04,281 INFO L933 BasicCegarLoop]: 1044 mSDtfsCounter, 2998 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 4344 SdHoareTripleChecker+Invalid, 3961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:04,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2998 Valid, 4344 Invalid, 3961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3904 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:51:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:51:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1441. [2021-11-19 15:51:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.3895184135977336) internal successors, (1962), 1440 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 15:51:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1962 transitions. [2021-11-19 15:51:04,533 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1962 transitions. Word has length 110 [2021-11-19 15:51:04,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:04,533 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1962 transitions. [2021-11-19 15:51:04,533 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 15:51:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1962 transitions. [2021-11-19 15:51:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:04,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:04,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:04,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-19 15:51:04,538 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:04,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:04,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1818417713, now seen corresponding path program 1 times [2021-11-19 15:51:04,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:04,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14695789] [2021-11-19 15:51:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:04,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:04,681 INFO 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 15:51:04,681 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:04,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14695789] [2021-11-19 15:51:04,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14695789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:04,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:04,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:04,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796427629] [2021-11-19 15:51:04,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:04,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:04,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:04,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:04,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:04,684 INFO L87 Difference]: Start difference. First operand 1441 states and 1962 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 15:51:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:07,216 INFO L93 Difference]: Finished difference Result 2481 states and 3353 transitions. [2021-11-19 15:51:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:51:07,216 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 15:51:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:07,219 INFO L225 Difference]: With dead ends: 2481 [2021-11-19 15:51:07,219 INFO L226 Difference]: Without dead ends: 2359 [2021-11-19 15:51:07,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:51:07,221 INFO L933 BasicCegarLoop]: 1078 mSDtfsCounter, 4181 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 4028 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:07,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4181 Valid, 4028 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 15:51:07,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-19 15:51:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1441. [2021-11-19 15:51:07,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1412 states have (on average 1.388101983002833) internal successors, (1960), 1440 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 15:51:07,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1960 transitions. [2021-11-19 15:51:07,458 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1960 transitions. Word has length 111 [2021-11-19 15:51:07,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:07,458 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1960 transitions. [2021-11-19 15:51:07,458 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 15:51:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1960 transitions. [2021-11-19 15:51:07,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:07,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:07,462 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] [2021-11-19 15:51:07,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-19 15:51:07,462 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:07,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:07,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1348346125, now seen corresponding path program 1 times [2021-11-19 15:51:07,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:07,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224107155] [2021-11-19 15:51:07,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:07,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:07,715 INFO 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 15:51:07,715 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:07,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224107155] [2021-11-19 15:51:07,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224107155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:07,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:07,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 15:51:07,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888049875] [2021-11-19 15:51:07,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:07,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:51:07,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:07,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:51:07,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:51:07,717 INFO L87 Difference]: Start difference. First operand 1441 states and 1960 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:51:12,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:12,595 INFO L93 Difference]: Finished difference Result 3223 states and 4358 transitions. [2021-11-19 15:51:12,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 15:51:12,596 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:51:12,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:12,599 INFO L225 Difference]: With dead ends: 3223 [2021-11-19 15:51:12,599 INFO L226 Difference]: Without dead ends: 3075 [2021-11-19 15:51:12,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 15:51:12,601 INFO L933 BasicCegarLoop]: 1086 mSDtfsCounter, 7782 mSDsluCounter, 4044 mSDsCounter, 0 mSdLazyCounter, 4792 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7782 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 5598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 4792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:12,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7782 Valid, 5116 Invalid, 5598 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [806 Valid, 4792 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 15:51:12,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2021-11-19 15:51:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 1449. [2021-11-19 15:51:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.3859154929577464) internal successors, (1968), 1448 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 15:51:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1968 transitions. [2021-11-19 15:51:12,855 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1968 transitions. Word has length 111 [2021-11-19 15:51:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:12,856 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1968 transitions. [2021-11-19 15:51:12,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:51:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1968 transitions. [2021-11-19 15:51:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:12,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:12,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:12,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-19 15:51:12,859 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:12,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:12,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1772682262, now seen corresponding path program 1 times [2021-11-19 15:51:12,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:12,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911536456] [2021-11-19 15:51:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:12,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:13,002 INFO 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 15:51:13,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:13,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911536456] [2021-11-19 15:51:13,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911536456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:13,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:13,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:13,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122404151] [2021-11-19 15:51:13,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:13,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:13,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:13,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:13,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:13,005 INFO L87 Difference]: Start difference. First operand 1449 states and 1968 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 15:51:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:15,864 INFO L93 Difference]: Finished difference Result 2489 states and 3359 transitions. [2021-11-19 15:51:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:51:15,865 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 15:51:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:15,868 INFO L225 Difference]: With dead ends: 2489 [2021-11-19 15:51:15,868 INFO L226 Difference]: Without dead ends: 2367 [2021-11-19 15:51:15,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:51:15,870 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 2877 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 4194 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2877 SdHoareTripleChecker+Valid, 4826 SdHoareTripleChecker+Invalid, 4280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:15,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2877 Valid, 4826 Invalid, 4280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4194 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:51:15,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2021-11-19 15:51:16,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1449. [2021-11-19 15:51:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.384507042253521) internal successors, (1966), 1448 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 15:51:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1966 transitions. [2021-11-19 15:51:16,129 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1966 transitions. Word has length 111 [2021-11-19 15:51:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:16,129 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1966 transitions. [2021-11-19 15:51:16,129 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 15:51:16,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1966 transitions. [2021-11-19 15:51:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:16,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:16,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:16,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-19 15:51:16,131 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash 341530428, now seen corresponding path program 1 times [2021-11-19 15:51:16,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:16,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123887715] [2021-11-19 15:51:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:16,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:16,278 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:16,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123887715] [2021-11-19 15:51:16,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123887715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:16,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:16,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:16,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176593235] [2021-11-19 15:51:16,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:16,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:16,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:16,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:16,287 INFO L87 Difference]: Start difference. First operand 1449 states and 1966 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 15:51:19,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:19,257 INFO L93 Difference]: Finished difference Result 2487 states and 3354 transitions. [2021-11-19 15:51:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:51:19,258 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 15:51:19,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:19,260 INFO L225 Difference]: With dead ends: 2487 [2021-11-19 15:51:19,260 INFO L226 Difference]: Without dead ends: 2367 [2021-11-19 15:51:19,261 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 15:51:19,261 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 4633 mSDsluCounter, 2958 mSDsCounter, 0 mSdLazyCounter, 3574 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 3874 SdHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:19,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4633 Valid, 3874 Invalid, 3738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3574 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 15:51:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2021-11-19 15:51:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1449. [2021-11-19 15:51:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.3830985915492957) internal successors, (1964), 1448 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 15:51:19,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1964 transitions. [2021-11-19 15:51:19,534 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1964 transitions. Word has length 111 [2021-11-19 15:51:19,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:19,535 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1964 transitions. [2021-11-19 15:51:19,535 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 15:51:19,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1964 transitions. [2021-11-19 15:51:19,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:19,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:19,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:19,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-19 15:51:19,537 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:19,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:19,537 INFO L85 PathProgramCache]: Analyzing trace with hash -207885694, now seen corresponding path program 1 times [2021-11-19 15:51:19,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:19,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463447889] [2021-11-19 15:51:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:19,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:19,690 INFO 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 15:51:19,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:19,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463447889] [2021-11-19 15:51:19,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463447889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:19,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:19,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:19,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452665015] [2021-11-19 15:51:19,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:19,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:19,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:19,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:19,693 INFO L87 Difference]: Start difference. First operand 1449 states and 1964 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 15:51:22,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:22,909 INFO L93 Difference]: Finished difference Result 2489 states and 3353 transitions. [2021-11-19 15:51:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:51:22,914 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 15:51:22,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:22,917 INFO L225 Difference]: With dead ends: 2489 [2021-11-19 15:51:22,918 INFO L226 Difference]: Without dead ends: 2367 [2021-11-19 15:51:22,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:51:22,919 INFO L933 BasicCegarLoop]: 1087 mSDtfsCounter, 2873 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 4180 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 4825 SdHoareTripleChecker+Invalid, 4266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:22,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2873 Valid, 4825 Invalid, 4266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4180 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 15:51:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2021-11-19 15:51:23,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1449. [2021-11-19 15:51:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.3816901408450704) internal successors, (1962), 1448 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 15:51:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1962 transitions. [2021-11-19 15:51:23,209 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1962 transitions. Word has length 111 [2021-11-19 15:51:23,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:23,209 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1962 transitions. [2021-11-19 15:51:23,210 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 15:51:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1962 transitions. [2021-11-19 15:51:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:23,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:23,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:23,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-19 15:51:23,212 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:23,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1636260107, now seen corresponding path program 1 times [2021-11-19 15:51:23,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:23,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652110934] [2021-11-19 15:51:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:23,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:23,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:23,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652110934] [2021-11-19 15:51:23,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652110934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:23,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:23,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:23,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063232734] [2021-11-19 15:51:23,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:23,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:23,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:23,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:23,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:23,366 INFO L87 Difference]: Start difference. First operand 1449 states and 1962 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 15:51:26,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:26,279 INFO L93 Difference]: Finished difference Result 2487 states and 3348 transitions. [2021-11-19 15:51:26,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:51:26,280 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 15:51:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:26,283 INFO L225 Difference]: With dead ends: 2487 [2021-11-19 15:51:26,283 INFO L226 Difference]: Without dead ends: 2367 [2021-11-19 15:51:26,284 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 15:51:26,285 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 4538 mSDsluCounter, 3013 mSDsCounter, 0 mSdLazyCounter, 3670 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4538 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 3831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 3670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:26,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4538 Valid, 3948 Invalid, 3831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 3670 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 15:51:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2021-11-19 15:51:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1449. [2021-11-19 15:51:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.380281690140845) internal successors, (1960), 1448 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 15:51:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1960 transitions. [2021-11-19 15:51:26,582 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1960 transitions. Word has length 111 [2021-11-19 15:51:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:26,583 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1960 transitions. [2021-11-19 15:51:26,583 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 15:51:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1960 transitions. [2021-11-19 15:51:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:26,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:26,586 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, 1, 1, 1] [2021-11-19 15:51:26,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-19 15:51:26,586 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:26,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:26,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1550265518, now seen corresponding path program 1 times [2021-11-19 15:51:26,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:26,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366455323] [2021-11-19 15:51:26,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:26,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:26,732 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 15:51:26,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:26,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366455323] [2021-11-19 15:51:26,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366455323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:26,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:26,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:26,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462254939] [2021-11-19 15:51:26,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:26,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:26,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:26,735 INFO L87 Difference]: Start difference. First operand 1449 states and 1960 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 15:51:29,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:29,863 INFO L93 Difference]: Finished difference Result 2487 states and 3346 transitions. [2021-11-19 15:51:29,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:51:29,864 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 15:51:29,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:29,868 INFO L225 Difference]: With dead ends: 2487 [2021-11-19 15:51:29,868 INFO L226 Difference]: Without dead ends: 2367 [2021-11-19 15:51:29,869 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 15:51:29,870 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 4571 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 3639 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4571 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 3801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:29,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4571 Valid, 3927 Invalid, 3801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3639 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:51:29,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2021-11-19 15:51:30,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1449. [2021-11-19 15:51:30,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.3788732394366197) internal successors, (1958), 1448 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 15:51:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1958 transitions. [2021-11-19 15:51:30,171 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1958 transitions. Word has length 111 [2021-11-19 15:51:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:30,172 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1958 transitions. [2021-11-19 15:51:30,172 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 15:51:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1958 transitions. [2021-11-19 15:51:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:30,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:30,174 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] [2021-11-19 15:51:30,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-19 15:51:30,174 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:30,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:30,174 INFO L85 PathProgramCache]: Analyzing trace with hash -490926311, now seen corresponding path program 1 times [2021-11-19 15:51:30,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:30,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391766084] [2021-11-19 15:51:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:30,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:30,328 INFO 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 15:51:30,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:30,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391766084] [2021-11-19 15:51:30,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391766084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:30,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:30,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:30,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138607782] [2021-11-19 15:51:30,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:30,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:30,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:30,331 INFO L87 Difference]: Start difference. First operand 1449 states and 1958 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 15:51:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:33,591 INFO L93 Difference]: Finished difference Result 2681 states and 3616 transitions. [2021-11-19 15:51:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:51:33,591 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 15:51:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:33,595 INFO L225 Difference]: With dead ends: 2681 [2021-11-19 15:51:33,595 INFO L226 Difference]: Without dead ends: 2447 [2021-11-19 15:51:33,596 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 15:51:33,597 INFO L933 BasicCegarLoop]: 1123 mSDtfsCounter, 4425 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 3910 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4425 SdHoareTripleChecker+Valid, 4509 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:33,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4425 Valid, 4509 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3910 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 15:51:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2021-11-19 15:51:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 1449. [2021-11-19 15:51:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.3774647887323943) internal successors, (1956), 1448 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 15:51:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1956 transitions. [2021-11-19 15:51:33,923 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1956 transitions. Word has length 111 [2021-11-19 15:51:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:33,924 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1956 transitions. [2021-11-19 15:51:33,924 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 15:51:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1956 transitions. [2021-11-19 15:51:33,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:33,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:33,926 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:33,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-19 15:51:33,926 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:33,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:33,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1110619485, now seen corresponding path program 1 times [2021-11-19 15:51:33,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:33,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222641799] [2021-11-19 15:51:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:33,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:34,074 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 15:51:34,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:34,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222641799] [2021-11-19 15:51:34,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222641799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:34,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:34,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:34,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282769233] [2021-11-19 15:51:34,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:34,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:34,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:34,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:34,078 INFO L87 Difference]: Start difference. First operand 1449 states and 1956 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 15:51:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:37,185 INFO L93 Difference]: Finished difference Result 2567 states and 3461 transitions. [2021-11-19 15:51:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:51:37,185 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 15:51:37,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:37,188 INFO L225 Difference]: With dead ends: 2567 [2021-11-19 15:51:37,189 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 15:51:37,190 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 15:51:37,190 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 4448 mSDsluCounter, 3351 mSDsCounter, 0 mSdLazyCounter, 3752 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4448 SdHoareTripleChecker+Valid, 4380 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:37,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4448 Valid, 4380 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3752 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:51:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 15:51:37,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1449. [2021-11-19 15:51:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.376056338028169) internal successors, (1954), 1448 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 15:51:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1954 transitions. [2021-11-19 15:51:37,576 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1954 transitions. Word has length 111 [2021-11-19 15:51:37,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:37,577 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1954 transitions. [2021-11-19 15:51:37,577 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 15:51:37,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1954 transitions. [2021-11-19 15:51:37,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:37,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:37,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:37,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-19 15:51:37,579 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:37,579 INFO L85 PathProgramCache]: Analyzing trace with hash 653409022, now seen corresponding path program 1 times [2021-11-19 15:51:37,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:37,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526411337] [2021-11-19 15:51:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:37,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:37,722 INFO 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 15:51:37,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:37,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526411337] [2021-11-19 15:51:37,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526411337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:37,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:37,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:37,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312109834] [2021-11-19 15:51:37,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:37,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:37,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:37,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:37,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:37,726 INFO L87 Difference]: Start difference. First operand 1449 states and 1954 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 15:51:41,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:41,039 INFO L93 Difference]: Finished difference Result 2493 states and 3345 transitions. [2021-11-19 15:51:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:51:41,039 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 15:51:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:41,043 INFO L225 Difference]: With dead ends: 2493 [2021-11-19 15:51:41,043 INFO L226 Difference]: Without dead ends: 2367 [2021-11-19 15:51:41,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:51:41,044 INFO L933 BasicCegarLoop]: 1115 mSDtfsCounter, 2914 mSDsluCounter, 3805 mSDsCounter, 0 mSdLazyCounter, 4099 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 4187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 4099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:41,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2914 Valid, 4909 Invalid, 4187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 4099 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 15:51:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2021-11-19 15:51:41,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1449. [2021-11-19 15:51:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1420 states have (on average 1.3746478873239436) internal successors, (1952), 1448 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 15:51:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1952 transitions. [2021-11-19 15:51:41,369 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1952 transitions. Word has length 111 [2021-11-19 15:51:41,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:41,370 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1952 transitions. [2021-11-19 15:51:41,370 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 15:51:41,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1952 transitions. [2021-11-19 15:51:41,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:41,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:41,372 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, 1] [2021-11-19 15:51:41,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-19 15:51:41,372 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1439144842, now seen corresponding path program 1 times [2021-11-19 15:51:41,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:41,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179183477] [2021-11-19 15:51:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:41,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:41,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:41,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179183477] [2021-11-19 15:51:41,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179183477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:41,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:41,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 15:51:41,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752915326] [2021-11-19 15:51:41,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:41,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:51:41,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:41,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:51:41,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:51:41,608 INFO L87 Difference]: Start difference. First operand 1449 states and 1952 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:51:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:47,123 INFO L93 Difference]: Finished difference Result 3249 states and 4376 transitions. [2021-11-19 15:51:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 15:51:47,124 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:51:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:47,128 INFO L225 Difference]: With dead ends: 3249 [2021-11-19 15:51:47,128 INFO L226 Difference]: Without dead ends: 3089 [2021-11-19 15:51:47,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 15:51:47,131 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 8100 mSDsluCounter, 3665 mSDsCounter, 0 mSdLazyCounter, 4310 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8100 SdHoareTripleChecker+Valid, 4767 SdHoareTripleChecker+Invalid, 5114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 4310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:47,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8100 Valid, 4767 Invalid, 5114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 4310 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 15:51:47,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2021-11-19 15:51:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 1457. [2021-11-19 15:51:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1428 states have (on average 1.3725490196078431) internal successors, (1960), 1456 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 15:51:47,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1960 transitions. [2021-11-19 15:51:47,521 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1960 transitions. Word has length 111 [2021-11-19 15:51:47,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:47,521 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1960 transitions. [2021-11-19 15:51:47,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:51:47,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1960 transitions. [2021-11-19 15:51:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:47,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:47,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:47,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-19 15:51:47,524 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:47,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1091793947, now seen corresponding path program 1 times [2021-11-19 15:51:47,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:47,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611401572] [2021-11-19 15:51:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:47,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:47,664 INFO 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 15:51:47,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:47,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611401572] [2021-11-19 15:51:47,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611401572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:47,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:47,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:47,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416833590] [2021-11-19 15:51:47,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:47,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:47,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:47,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:47,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:47,667 INFO L87 Difference]: Start difference. First operand 1457 states and 1960 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 15:51:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:50,973 INFO L93 Difference]: Finished difference Result 2501 states and 3351 transitions. [2021-11-19 15:51:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:51:50,973 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 15:51:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:50,976 INFO L225 Difference]: With dead ends: 2501 [2021-11-19 15:51:50,976 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:51:50,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:51:50,978 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 4152 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 3521 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4152 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 3642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:50,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4152 Valid, 4220 Invalid, 3642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3521 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 15:51:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:51:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1457. [2021-11-19 15:51:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1428 states have (on average 1.3711484593837535) internal successors, (1958), 1456 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 15:51:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1958 transitions. [2021-11-19 15:51:51,297 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1958 transitions. Word has length 111 [2021-11-19 15:51:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:51,297 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1958 transitions. [2021-11-19 15:51:51,297 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 15:51:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1958 transitions. [2021-11-19 15:51:51,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:51,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:51,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:51,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-19 15:51:51,300 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:51,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1432277484, now seen corresponding path program 1 times [2021-11-19 15:51:51,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:51,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975746534] [2021-11-19 15:51:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:51,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:51,444 INFO 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 15:51:51,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:51,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975746534] [2021-11-19 15:51:51,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975746534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:51,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:51,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:51,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229864186] [2021-11-19 15:51:51,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:51,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:51,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:51,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:51,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:51,446 INFO L87 Difference]: Start difference. First operand 1457 states and 1958 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 15:51:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:54,437 INFO L93 Difference]: Finished difference Result 2501 states and 3349 transitions. [2021-11-19 15:51:54,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:51:54,437 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 15:51:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:54,440 INFO L225 Difference]: With dead ends: 2501 [2021-11-19 15:51:54,440 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:51:54,442 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 15:51:54,442 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 3046 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 3679 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3046 SdHoareTripleChecker+Valid, 4021 SdHoareTripleChecker+Invalid, 3785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 3679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:54,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3046 Valid, 4021 Invalid, 3785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 3679 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 15:51:54,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:51:54,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1457. [2021-11-19 15:51:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1428 states have (on average 1.3697478991596639) internal successors, (1956), 1456 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 15:51:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1956 transitions. [2021-11-19 15:51:54,825 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1956 transitions. Word has length 111 [2021-11-19 15:51:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:54,826 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1956 transitions. [2021-11-19 15:51:54,826 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 15:51:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1956 transitions. [2021-11-19 15:51:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:54,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:54,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:54,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-19 15:51:54,829 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:54,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1704635001, now seen corresponding path program 1 times [2021-11-19 15:51:54,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:54,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385712060] [2021-11-19 15:51:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:54,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:54,980 INFO 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 15:51:54,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:54,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385712060] [2021-11-19 15:51:54,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385712060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:54,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:54,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:54,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025148814] [2021-11-19 15:51:54,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:54,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:54,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:54,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:54,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:54,984 INFO L87 Difference]: Start difference. First operand 1457 states and 1956 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 15:51:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:58,436 INFO L93 Difference]: Finished difference Result 2495 states and 3338 transitions. [2021-11-19 15:51:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:51:58,436 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 15:51:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:58,440 INFO L225 Difference]: With dead ends: 2495 [2021-11-19 15:51:58,440 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:51:58,442 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 15:51:58,442 INFO L933 BasicCegarLoop]: 949 mSDtfsCounter, 4513 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 3592 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4513 SdHoareTripleChecker+Valid, 3982 SdHoareTripleChecker+Invalid, 3754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:58,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4513 Valid, 3982 Invalid, 3754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3592 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 15:51:58,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:51:58,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1457. [2021-11-19 15:51:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1428 states have (on average 1.3683473389355743) internal successors, (1954), 1456 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 15:51:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1954 transitions. [2021-11-19 15:51:58,793 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1954 transitions. Word has length 111 [2021-11-19 15:51:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:58,793 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1954 transitions. [2021-11-19 15:51:58,793 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 15:51:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1954 transitions. [2021-11-19 15:51:58,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:51:58,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:58,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:58,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-19 15:51:58,796 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:51:58,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:58,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1560842717, now seen corresponding path program 1 times [2021-11-19 15:51:58,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:51:58,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605484849] [2021-11-19 15:51:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:58,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:51:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:58,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:51:58,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605484849] [2021-11-19 15:51:58,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605484849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:58,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:58,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:51:58,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563501527] [2021-11-19 15:51:58,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:58,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:58,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:51:58,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:58,951 INFO L87 Difference]: Start difference. First operand 1457 states and 1954 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 15:52:02,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:02,296 INFO L93 Difference]: Finished difference Result 2491 states and 3329 transitions. [2021-11-19 15:52:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:52:02,297 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 15:52:02,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:02,300 INFO L225 Difference]: With dead ends: 2491 [2021-11-19 15:52:02,300 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:52:02,302 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 15:52:02,302 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 4442 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 3692 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4442 SdHoareTripleChecker+Valid, 4031 SdHoareTripleChecker+Invalid, 3851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:02,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4442 Valid, 4031 Invalid, 3851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3692 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 15:52:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:52:02,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1457. [2021-11-19 15:52:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1428 states have (on average 1.3676470588235294) internal successors, (1953), 1456 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 15:52:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1953 transitions. [2021-11-19 15:52:02,658 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1953 transitions. Word has length 111 [2021-11-19 15:52:02,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:02,658 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1953 transitions. [2021-11-19 15:52:02,658 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 15:52:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1953 transitions. [2021-11-19 15:52:02,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:52:02,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:02,660 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] [2021-11-19 15:52:02,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-19 15:52:02,661 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:02,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:02,661 INFO L85 PathProgramCache]: Analyzing trace with hash 507956714, now seen corresponding path program 1 times [2021-11-19 15:52:02,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:02,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779818229] [2021-11-19 15:52:02,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:02,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:02,803 INFO 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 15:52:02,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:02,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779818229] [2021-11-19 15:52:02,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779818229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:02,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:02,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:52:02,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402733800] [2021-11-19 15:52:02,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:02,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:52:02,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:02,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:52:02,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:52:02,806 INFO L87 Difference]: Start difference. First operand 1457 states and 1953 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 15:52:06,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:06,313 INFO L93 Difference]: Finished difference Result 2491 states and 3328 transitions. [2021-11-19 15:52:06,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:52:06,313 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 15:52:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:06,316 INFO L225 Difference]: With dead ends: 2491 [2021-11-19 15:52:06,316 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:52:06,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:52:06,317 INFO L933 BasicCegarLoop]: 1125 mSDtfsCounter, 2851 mSDsluCounter, 3825 mSDsCounter, 0 mSdLazyCounter, 4174 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2851 SdHoareTripleChecker+Valid, 4937 SdHoareTripleChecker+Invalid, 4260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:06,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2851 Valid, 4937 Invalid, 4260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4174 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 15:52:06,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:52:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1457. [2021-11-19 15:52:06,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1428 states have (on average 1.3669467787114846) internal successors, (1952), 1456 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 15:52:06,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1952 transitions. [2021-11-19 15:52:06,673 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1952 transitions. Word has length 111 [2021-11-19 15:52:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:06,673 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1952 transitions. [2021-11-19 15:52:06,673 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 15:52:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1952 transitions. [2021-11-19 15:52:06,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:52:06,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:06,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:06,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-19 15:52:06,675 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1102714936, now seen corresponding path program 1 times [2021-11-19 15:52:06,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:06,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943523395] [2021-11-19 15:52:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:06,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:06,805 INFO 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 15:52:06,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:06,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943523395] [2021-11-19 15:52:06,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943523395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:06,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:06,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:52:06,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102994021] [2021-11-19 15:52:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:06,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:52:06,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:52:06,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:52:06,809 INFO L87 Difference]: Start difference. First operand 1457 states and 1952 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 15:52:10,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:10,105 INFO L93 Difference]: Finished difference Result 2487 states and 3322 transitions. [2021-11-19 15:52:10,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:52:10,106 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 15:52:10,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:10,109 INFO L225 Difference]: With dead ends: 2487 [2021-11-19 15:52:10,109 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:52:10,113 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 15:52:10,114 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 4424 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 3683 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4424 SdHoareTripleChecker+Valid, 4040 SdHoareTripleChecker+Invalid, 3842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:10,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4424 Valid, 4040 Invalid, 3842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3683 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 15:52:10,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:52:10,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1457. [2021-11-19 15:52:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1428 states have (on average 1.3662464985994398) internal successors, (1951), 1456 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:52:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1951 transitions. [2021-11-19 15:52:10,478 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1951 transitions. Word has length 111 [2021-11-19 15:52:10,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:10,479 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1951 transitions. [2021-11-19 15:52:10,479 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 15:52:10,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1951 transitions. [2021-11-19 15:52:10,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:52:10,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:10,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:10,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-19 15:52:10,481 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:10,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:10,481 INFO L85 PathProgramCache]: Analyzing trace with hash -554268063, now seen corresponding path program 1 times [2021-11-19 15:52:10,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:10,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511554506] [2021-11-19 15:52:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:10,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:52:10,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:10,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511554506] [2021-11-19 15:52:10,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511554506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:10,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:10,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 15:52:10,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290885931] [2021-11-19 15:52:10,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:10,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:52:10,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:10,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:52:10,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:52:10,708 INFO L87 Difference]: Start difference. First operand 1457 states and 1951 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:52:16,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:16,503 INFO L93 Difference]: Finished difference Result 3066 states and 4098 transitions. [2021-11-19 15:52:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 15:52:16,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:52:16,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:16,507 INFO L225 Difference]: With dead ends: 3066 [2021-11-19 15:52:16,507 INFO L226 Difference]: Without dead ends: 2950 [2021-11-19 15:52:16,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 15:52:16,509 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 7728 mSDsluCounter, 3320 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7728 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 5017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 976 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:16,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7728 Valid, 4297 Invalid, 5017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [976 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 15:52:16,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-11-19 15:52:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1461. [2021-11-19 15:52:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1432 states have (on average 1.3652234636871508) internal successors, (1955), 1460 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 15:52:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1955 transitions. [2021-11-19 15:52:16,907 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1955 transitions. Word has length 111 [2021-11-19 15:52:16,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:16,907 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 1955 transitions. [2021-11-19 15:52:16,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:52:16,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1955 transitions. [2021-11-19 15:52:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:52:16,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:16,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:52:16,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-19 15:52:16,910 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:16,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:16,910 INFO L85 PathProgramCache]: Analyzing trace with hash 43161329, now seen corresponding path program 1 times [2021-11-19 15:52:16,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:16,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136527849] [2021-11-19 15:52:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:16,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:17,062 INFO 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 15:52:17,062 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:17,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136527849] [2021-11-19 15:52:17,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136527849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:17,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:17,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:52:17,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424838358] [2021-11-19 15:52:17,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:17,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:52:17,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:17,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:52:17,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:52:17,066 INFO L87 Difference]: Start difference. First operand 1461 states and 1955 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 15:52:20,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:20,469 INFO L93 Difference]: Finished difference Result 2487 states and 3320 transitions. [2021-11-19 15:52:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:52:20,469 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 15:52:20,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:20,472 INFO L225 Difference]: With dead ends: 2487 [2021-11-19 15:52:20,473 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:52:20,474 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 15:52:20,475 INFO L933 BasicCegarLoop]: 959 mSDtfsCounter, 4443 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 3650 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4443 SdHoareTripleChecker+Valid, 4020 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:20,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4443 Valid, 4020 Invalid, 3809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3650 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 15:52:20,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:52:20,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1461. [2021-11-19 15:52:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1432 states have (on average 1.3645251396648044) internal successors, (1954), 1460 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 15:52:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1954 transitions. [2021-11-19 15:52:20,864 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1954 transitions. Word has length 111 [2021-11-19 15:52:20,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:20,864 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 1954 transitions. [2021-11-19 15:52:20,865 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 15:52:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1954 transitions. [2021-11-19 15:52:20,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:52:20,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:20,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:20,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-19 15:52:20,867 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:20,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:20,868 INFO L85 PathProgramCache]: Analyzing trace with hash 554907178, now seen corresponding path program 1 times [2021-11-19 15:52:20,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:20,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577315344] [2021-11-19 15:52:20,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:20,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:21,016 INFO 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 15:52:21,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:21,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577315344] [2021-11-19 15:52:21,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577315344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:21,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:21,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:52:21,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019569867] [2021-11-19 15:52:21,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:21,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:52:21,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:21,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:52:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:52:21,019 INFO L87 Difference]: Start difference. First operand 1461 states and 1954 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 15:52:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:24,399 INFO L93 Difference]: Finished difference Result 2487 states and 3319 transitions. [2021-11-19 15:52:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:52:24,400 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 15:52:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:24,402 INFO L225 Difference]: With dead ends: 2487 [2021-11-19 15:52:24,403 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:52:24,403 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 15:52:24,404 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 4475 mSDsluCounter, 3048 mSDsCounter, 0 mSdLazyCounter, 3624 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4475 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 3784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 3624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:24,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4475 Valid, 4003 Invalid, 3784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 3624 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 15:52:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:52:24,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1461. [2021-11-19 15:52:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1432 states have (on average 1.363826815642458) internal successors, (1953), 1460 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 15:52:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1953 transitions. [2021-11-19 15:52:24,800 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1953 transitions. Word has length 111 [2021-11-19 15:52:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:24,800 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 1953 transitions. [2021-11-19 15:52:24,800 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 15:52:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1953 transitions. [2021-11-19 15:52:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:52:24,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:24,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:24,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-19 15:52:24,802 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash 195358297, now seen corresponding path program 1 times [2021-11-19 15:52:24,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:24,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324985220] [2021-11-19 15:52:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:24,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:24,938 INFO 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 15:52:24,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:24,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324985220] [2021-11-19 15:52:24,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324985220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:24,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:24,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:52:24,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913233817] [2021-11-19 15:52:24,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:24,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:52:24,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:52:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:52:24,942 INFO L87 Difference]: Start difference. First operand 1461 states and 1953 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 15:52:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:28,237 INFO L93 Difference]: Finished difference Result 2481 states and 3308 transitions. [2021-11-19 15:52:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:52:28,238 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 15:52:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:28,242 INFO L225 Difference]: With dead ends: 2481 [2021-11-19 15:52:28,243 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:52:28,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:52:28,245 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 2920 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 3704 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2920 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 3793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:28,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2920 Valid, 4494 Invalid, 3793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3704 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:52:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:52:28,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1461. [2021-11-19 15:52:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1432 states have (on average 1.3631284916201116) internal successors, (1952), 1460 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 15:52:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1952 transitions. [2021-11-19 15:52:28,666 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1952 transitions. Word has length 111 [2021-11-19 15:52:28,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:28,666 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 1952 transitions. [2021-11-19 15:52:28,667 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 15:52:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1952 transitions. [2021-11-19 15:52:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:52:28,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:28,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:28,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-19 15:52:28,669 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:28,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:28,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1325049922, now seen corresponding path program 1 times [2021-11-19 15:52:28,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:28,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542541221] [2021-11-19 15:52:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:28,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:28,819 INFO 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 15:52:28,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:28,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542541221] [2021-11-19 15:52:28,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542541221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:28,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:28,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:52:28,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139674495] [2021-11-19 15:52:28,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:28,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:52:28,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:52:28,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:52:28,822 INFO L87 Difference]: Start difference. First operand 1461 states and 1952 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 15:52:32,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:32,220 INFO L93 Difference]: Finished difference Result 2491 states and 3319 transitions. [2021-11-19 15:52:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:52:32,220 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 15:52:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:32,223 INFO L225 Difference]: With dead ends: 2491 [2021-11-19 15:52:32,223 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:52:32,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:52:32,224 INFO L933 BasicCegarLoop]: 1106 mSDtfsCounter, 2840 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2840 SdHoareTripleChecker+Valid, 4514 SdHoareTripleChecker+Invalid, 3873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:32,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2840 Valid, 4514 Invalid, 3873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3787 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 15:52:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:52:32,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1461. [2021-11-19 15:52:32,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1432 states have (on average 1.3624301675977655) internal successors, (1951), 1460 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:52:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1951 transitions. [2021-11-19 15:52:32,627 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1951 transitions. Word has length 111 [2021-11-19 15:52:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:32,627 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 1951 transitions. [2021-11-19 15:52:32,627 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 15:52:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1951 transitions. [2021-11-19 15:52:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:52:32,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:32,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:32,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-19 15:52:32,629 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1640902503, now seen corresponding path program 1 times [2021-11-19 15:52:32,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:32,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351557781] [2021-11-19 15:52:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:32,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:32,776 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 15:52:32,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:32,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351557781] [2021-11-19 15:52:32,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351557781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:32,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:32,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:52:32,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223558416] [2021-11-19 15:52:32,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:32,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:52:32,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:32,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:52:32,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:52:32,779 INFO L87 Difference]: Start difference. First operand 1461 states and 1951 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 15:52:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:36,314 INFO L93 Difference]: Finished difference Result 2487 states and 3314 transitions. [2021-11-19 15:52:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:52:36,314 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 15:52:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:36,317 INFO L225 Difference]: With dead ends: 2487 [2021-11-19 15:52:36,318 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:52:36,319 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 15:52:36,321 INFO L933 BasicCegarLoop]: 959 mSDtfsCounter, 4439 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 3620 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4439 SdHoareTripleChecker+Valid, 4016 SdHoareTripleChecker+Invalid, 3779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:36,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4439 Valid, 4016 Invalid, 3779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3620 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 15:52:36,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:52:36,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1461. [2021-11-19 15:52:36,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1432 states have (on average 1.361731843575419) internal successors, (1950), 1460 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 15:52:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1950 transitions. [2021-11-19 15:52:36,728 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1950 transitions. Word has length 111 [2021-11-19 15:52:36,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:36,728 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 1950 transitions. [2021-11-19 15:52:36,729 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 15:52:36,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1950 transitions. [2021-11-19 15:52:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:52:36,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:36,730 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] [2021-11-19 15:52:36,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-19 15:52:36,731 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:36,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:36,731 INFO L85 PathProgramCache]: Analyzing trace with hash 870796832, now seen corresponding path program 1 times [2021-11-19 15:52:36,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:36,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897574255] [2021-11-19 15:52:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:36,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:36,879 INFO 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 15:52:36,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:36,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897574255] [2021-11-19 15:52:36,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897574255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:36,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:36,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:52:36,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823713947] [2021-11-19 15:52:36,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:36,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:52:36,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:52:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:52:36,883 INFO L87 Difference]: Start difference. First operand 1461 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 15:52:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:40,383 INFO L93 Difference]: Finished difference Result 2487 states and 3313 transitions. [2021-11-19 15:52:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:52:40,384 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 15:52:40,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:40,386 INFO L225 Difference]: With dead ends: 2487 [2021-11-19 15:52:40,386 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 15:52:40,387 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 15:52:40,387 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 4384 mSDsluCounter, 3095 mSDsCounter, 0 mSdLazyCounter, 3695 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4384 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 3695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:40,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4384 Valid, 4069 Invalid, 3852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 3695 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 15:52:40,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 15:52:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1461. [2021-11-19 15:52:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1432 states have (on average 1.3610335195530727) internal successors, (1949), 1460 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 15:52:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1949 transitions. [2021-11-19 15:52:40,799 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1949 transitions. Word has length 111 [2021-11-19 15:52:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:40,799 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 1949 transitions. [2021-11-19 15:52:40,799 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 15:52:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1949 transitions. [2021-11-19 15:52:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:52:40,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:40,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:40,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-19 15:52:40,801 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:40,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1025494188, now seen corresponding path program 1 times [2021-11-19 15:52:40,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:40,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908305581] [2021-11-19 15:52:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:40,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:41,055 INFO 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 15:52:41,056 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:41,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908305581] [2021-11-19 15:52:41,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908305581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:41,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:41,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 15:52:41,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406364330] [2021-11-19 15:52:41,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:41,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:52:41,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:41,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:52:41,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:52:41,058 INFO L87 Difference]: Start difference. First operand 1461 states and 1949 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:52:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:47,136 INFO L93 Difference]: Finished difference Result 3058 states and 4080 transitions. [2021-11-19 15:52:47,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 15:52:47,137 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:52:47,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:47,141 INFO L225 Difference]: With dead ends: 3058 [2021-11-19 15:52:47,141 INFO L226 Difference]: Without dead ends: 2946 [2021-11-19 15:52:47,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 15:52:47,143 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 7671 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 4417 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7671 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 5400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 4417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:47,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7671 Valid, 4679 Invalid, 5400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [983 Valid, 4417 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-19 15:52:47,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2021-11-19 15:52:47,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1465. [2021-11-19 15:52:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1436 states have (on average 1.3600278551532032) internal successors, (1953), 1464 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 15:52:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 1953 transitions. [2021-11-19 15:52:47,598 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 1953 transitions. Word has length 111 [2021-11-19 15:52:47,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:47,598 INFO L470 AbstractCegarLoop]: Abstraction has 1465 states and 1953 transitions. [2021-11-19 15:52:47,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 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 15:52:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 1953 transitions. [2021-11-19 15:52:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 15:52:47,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:47,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:47,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-19 15:52:47,601 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1760730455, now seen corresponding path program 1 times [2021-11-19 15:52:47,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:47,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963647299] [2021-11-19 15:52:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:47,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:47,741 INFO 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 15:52:47,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:47,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963647299] [2021-11-19 15:52:47,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963647299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:47,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:47,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:52:47,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894273295] [2021-11-19 15:52:47,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:47,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:52:47,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:52:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:52:47,744 INFO L87 Difference]: Start difference. First operand 1465 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 15:52:51,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:51,326 INFO L93 Difference]: Finished difference Result 2571 states and 3431 transitions. [2021-11-19 15:52:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:52:51,327 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 15:52:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:51,330 INFO L225 Difference]: With dead ends: 2571 [2021-11-19 15:52:51,330 INFO L226 Difference]: Without dead ends: 2423 [2021-11-19 15:52:51,331 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 15:52:51,331 INFO L933 BasicCegarLoop]: 1079 mSDtfsCounter, 2910 mSDsluCounter, 3386 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2910 SdHoareTripleChecker+Valid, 4456 SdHoareTripleChecker+Invalid, 3893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:51,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2910 Valid, 4456 Invalid, 3893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 15:52:51,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2021-11-19 15:52:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 1457. [2021-11-19 15:52:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1428 states have (on average 1.3606442577030813) internal successors, (1943), 1456 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:52:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1943 transitions. [2021-11-19 15:52:51,758 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1943 transitions. Word has length 112 [2021-11-19 15:52:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:51,758 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1943 transitions. [2021-11-19 15:52:51,758 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 15:52:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1943 transitions. [2021-11-19 15:52:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 15:52:51,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:51,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:51,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-19 15:52:51,761 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:51,761 INFO L85 PathProgramCache]: Analyzing trace with hash 457791208, now seen corresponding path program 1 times [2021-11-19 15:52:51,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:51,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113698682] [2021-11-19 15:52:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:51,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:52,243 INFO 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 15:52:52,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:52,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113698682] [2021-11-19 15:52:52,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113698682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:52,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:52,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 15:52:52,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922281308] [2021-11-19 15:52:52,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:52,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:52:52,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:52,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:52:52,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:52:52,246 INFO L87 Difference]: Start difference. First operand 1457 states and 1943 transitions. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 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 15:52:54,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:54,210 INFO L93 Difference]: Finished difference Result 2257 states and 3017 transitions. [2021-11-19 15:52:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:52:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 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 15:52:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:54,213 INFO L225 Difference]: With dead ends: 2257 [2021-11-19 15:52:54,213 INFO L226 Difference]: Without dead ends: 1761 [2021-11-19 15:52:54,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-19 15:52:54,215 INFO L933 BasicCegarLoop]: 1426 mSDtfsCounter, 4926 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4926 SdHoareTripleChecker+Valid, 6763 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:54,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4926 Valid, 6763 Invalid, 550 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 15:52:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2021-11-19 15:52:54,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1065. [2021-11-19 15:52:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1042 states have (on average 1.3474088291746642) internal successors, (1404), 1064 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:52:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1404 transitions. [2021-11-19 15:52:54,593 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1404 transitions. Word has length 112 [2021-11-19 15:52:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:54,594 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1404 transitions. [2021-11-19 15:52:54,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 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 15:52:54,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1404 transitions. [2021-11-19 15:52:54,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 15:52:54,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:54,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:52:54,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-19 15:52:54,596 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash 910688277, now seen corresponding path program 1 times [2021-11-19 15:52:54,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:54,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265740096] [2021-11-19 15:52:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:54,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:54,748 INFO 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 15:52:54,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:54,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265740096] [2021-11-19 15:52:54,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265740096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:54,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:54,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:52:54,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370933174] [2021-11-19 15:52:54,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:54,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:52:54,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:52:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:52:54,752 INFO L87 Difference]: Start difference. First operand 1065 states and 1404 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 15:52:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:57,744 INFO L93 Difference]: Finished difference Result 1995 states and 2647 transitions. [2021-11-19 15:52:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:52:57,744 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 15:52:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:57,746 INFO L225 Difference]: With dead ends: 1995 [2021-11-19 15:52:57,747 INFO L226 Difference]: Without dead ends: 1835 [2021-11-19 15:52:57,747 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 15:52:57,748 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 3242 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 3114 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3242 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:57,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3242 Valid, 3604 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3114 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 15:52:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2021-11-19 15:52:58,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1057. [2021-11-19 15:52:58,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1034 states have (on average 1.3481624758220503) internal successors, (1394), 1056 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:52:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1394 transitions. [2021-11-19 15:52:58,115 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1394 transitions. Word has length 112 [2021-11-19 15:52:58,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:58,115 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1394 transitions. [2021-11-19 15:52:58,115 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 15:52:58,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1394 transitions. [2021-11-19 15:52:58,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 15:52:58,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:58,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:58,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-19 15:52:58,118 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:52:58,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:58,118 INFO L85 PathProgramCache]: Analyzing trace with hash -755426704, now seen corresponding path program 1 times [2021-11-19 15:52:58,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:52:58,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525490061] [2021-11-19 15:52:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:58,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:52:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:58,271 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 15:52:58,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:52:58,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525490061] [2021-11-19 15:52:58,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525490061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:58,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:58,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:52:58,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25868860] [2021-11-19 15:52:58,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:58,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:52:58,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:52:58,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:52:58,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:52:58,274 INFO L87 Difference]: Start difference. First operand 1057 states and 1394 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 15:53:01,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:01,250 INFO L93 Difference]: Finished difference Result 1903 states and 2517 transitions. [2021-11-19 15:53:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:53:01,254 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 15:53:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:01,257 INFO L225 Difference]: With dead ends: 1903 [2021-11-19 15:53:01,257 INFO L226 Difference]: Without dead ends: 1787 [2021-11-19 15:53:01,259 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 15:53:01,259 INFO L933 BasicCegarLoop]: 800 mSDtfsCounter, 2338 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:01,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2338 Valid, 3273 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2854 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 15:53:01,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2021-11-19 15:53:01,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1053. [2021-11-19 15:53:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1030 states have (on average 1.3485436893203884) internal successors, (1389), 1052 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 15:53:01,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1389 transitions. [2021-11-19 15:53:01,623 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1389 transitions. Word has length 112 [2021-11-19 15:53:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:01,623 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 1389 transitions. [2021-11-19 15:53:01,624 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 15:53:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1389 transitions. [2021-11-19 15:53:01,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 15:53:01,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:01,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:53:01,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-19 15:53:01,625 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:01,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:01,626 INFO L85 PathProgramCache]: Analyzing trace with hash -767074129, now seen corresponding path program 1 times [2021-11-19 15:53:01,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:01,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525841140] [2021-11-19 15:53:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:01,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:01,988 INFO 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 15:53:01,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:01,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525841140] [2021-11-19 15:53:01,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525841140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:01,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:01,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 15:53:01,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974689575] [2021-11-19 15:53:01,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:01,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:53:01,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:01,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:53:01,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:53:01,990 INFO L87 Difference]: Start difference. First operand 1053 states and 1389 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 15:53:03,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:03,887 INFO L93 Difference]: Finished difference Result 1599 states and 2020 transitions. [2021-11-19 15:53:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:53:03,887 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 15:53:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:03,889 INFO L225 Difference]: With dead ends: 1599 [2021-11-19 15:53:03,889 INFO L226 Difference]: Without dead ends: 1119 [2021-11-19 15:53:03,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:53:03,891 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 2761 mSDsluCounter, 3139 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2761 SdHoareTripleChecker+Valid, 3885 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:03,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2761 Valid, 3885 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 15:53:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-19 15:53:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 677. [2021-11-19 15:53:04,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3328290468986383) internal successors, (881), 676 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:04,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 881 transitions. [2021-11-19 15:53:04,170 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 881 transitions. Word has length 112 [2021-11-19 15:53:04,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:04,170 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 881 transitions. [2021-11-19 15:53:04,170 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 15:53:04,171 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 881 transitions. [2021-11-19 15:53:04,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:04,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:04,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:04,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-19 15:53:04,172 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:04,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:04,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1321600354, now seen corresponding path program 1 times [2021-11-19 15:53:04,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:04,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539751149] [2021-11-19 15:53:04,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:04,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:04,302 INFO 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 15:53:04,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:04,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539751149] [2021-11-19 15:53:04,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539751149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:04,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:04,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:04,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501716606] [2021-11-19 15:53:04,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:04,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:04,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:04,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:04,306 INFO L87 Difference]: Start difference. First operand 677 states and 881 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 15:53:06,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:06,192 INFO L93 Difference]: Finished difference Result 1309 states and 1708 transitions. [2021-11-19 15:53:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:53:06,193 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 15:53:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:06,194 INFO L225 Difference]: With dead ends: 1309 [2021-11-19 15:53:06,194 INFO L226 Difference]: Without dead ends: 1197 [2021-11-19 15:53:06,195 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 15:53:06,195 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 1933 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:06,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1933 Valid, 1447 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 15:53:06,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-19 15:53:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 677. [2021-11-19 15:53:06,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3298033282904689) internal successors, (879), 676 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 879 transitions. [2021-11-19 15:53:06,481 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 879 transitions. Word has length 113 [2021-11-19 15:53:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:06,481 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 879 transitions. [2021-11-19 15:53:06,482 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 15:53:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 879 transitions. [2021-11-19 15:53:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:06,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:06,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:06,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-19 15:53:06,483 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:06,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:06,483 INFO L85 PathProgramCache]: Analyzing trace with hash -864524617, now seen corresponding path program 1 times [2021-11-19 15:53:06,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:06,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633934547] [2021-11-19 15:53:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:06,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:06,622 INFO 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 15:53:06,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:06,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633934547] [2021-11-19 15:53:06,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633934547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:06,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:06,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:06,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384806964] [2021-11-19 15:53:06,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:06,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:06,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:06,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:06,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:06,626 INFO L87 Difference]: Start difference. First operand 677 states and 879 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 15:53:08,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:08,630 INFO L93 Difference]: Finished difference Result 1357 states and 1781 transitions. [2021-11-19 15:53:08,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:53:08,631 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 15:53:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:08,634 INFO L225 Difference]: With dead ends: 1357 [2021-11-19 15:53:08,634 INFO L226 Difference]: Without dead ends: 1229 [2021-11-19 15:53:08,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:53:08,636 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 1192 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:08,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1192 Valid, 2057 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 15:53:08,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-11-19 15:53:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 677. [2021-11-19 15:53:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3267776096822996) internal successors, (877), 676 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 877 transitions. [2021-11-19 15:53:08,953 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 877 transitions. Word has length 113 [2021-11-19 15:53:08,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:08,953 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 877 transitions. [2021-11-19 15:53:08,954 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 15:53:08,954 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 877 transitions. [2021-11-19 15:53:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:08,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:08,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:08,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-19 15:53:08,955 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:08,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:08,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1464445520, now seen corresponding path program 1 times [2021-11-19 15:53:08,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:08,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686059340] [2021-11-19 15:53:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:08,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:09,087 INFO 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 15:53:09,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:09,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686059340] [2021-11-19 15:53:09,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686059340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:09,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:09,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:09,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715004872] [2021-11-19 15:53:09,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:09,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:09,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:09,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:09,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:09,089 INFO L87 Difference]: Start difference. First operand 677 states and 877 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 15:53:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:11,018 INFO L93 Difference]: Finished difference Result 1413 states and 1852 transitions. [2021-11-19 15:53:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:53:11,018 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 15:53:11,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:11,020 INFO L225 Difference]: With dead ends: 1413 [2021-11-19 15:53:11,020 INFO L226 Difference]: Without dead ends: 1245 [2021-11-19 15:53:11,021 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 15:53:11,025 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 1239 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:11,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1239 Valid, 1802 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:53:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-11-19 15:53:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 677. [2021-11-19 15:53:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 661 states have (on average 1.3237518910741302) internal successors, (875), 676 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 875 transitions. [2021-11-19 15:53:11,350 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 875 transitions. Word has length 113 [2021-11-19 15:53:11,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:11,350 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 875 transitions. [2021-11-19 15:53:11,350 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 15:53:11,350 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 875 transitions. [2021-11-19 15:53:11,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:11,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:11,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:11,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-19 15:53:11,352 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:11,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:11,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1600076547, now seen corresponding path program 1 times [2021-11-19 15:53:11,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:11,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973181450] [2021-11-19 15:53:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:11,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:11,596 INFO 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 15:53:11,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:11,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973181450] [2021-11-19 15:53:11,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973181450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:11,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:11,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 15:53:11,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111921829] [2021-11-19 15:53:11,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:11,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:53:11,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:11,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:53:11,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:53:11,599 INFO L87 Difference]: Start difference. First operand 677 states and 875 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 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 15:53:15,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:15,543 INFO L93 Difference]: Finished difference Result 1827 states and 2399 transitions. [2021-11-19 15:53:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 15:53:15,543 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 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 15:53:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:15,546 INFO L225 Difference]: With dead ends: 1827 [2021-11-19 15:53:15,546 INFO L226 Difference]: Without dead ends: 1715 [2021-11-19 15:53:15,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 15:53:15,547 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 3668 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3668 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:15,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3668 Valid, 1886 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 15:53:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2021-11-19 15:53:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 685. [2021-11-19 15:53:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 669 states have (on average 1.3198804185351272) internal successors, (883), 684 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 883 transitions. [2021-11-19 15:53:15,868 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 883 transitions. Word has length 113 [2021-11-19 15:53:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:15,868 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 883 transitions. [2021-11-19 15:53:15,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 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 15:53:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 883 transitions. [2021-11-19 15:53:15,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:15,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:15,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:15,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-19 15:53:15,870 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2025168367, now seen corresponding path program 1 times [2021-11-19 15:53:15,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:15,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573112140] [2021-11-19 15:53:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:15,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:16,013 INFO 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 15:53:16,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:16,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573112140] [2021-11-19 15:53:16,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573112140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:16,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:16,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:16,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817648636] [2021-11-19 15:53:16,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:16,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:16,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:16,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:16,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:16,015 INFO L87 Difference]: Start difference. First operand 685 states and 883 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 15:53:17,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:17,967 INFO L93 Difference]: Finished difference Result 1305 states and 1695 transitions. [2021-11-19 15:53:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:53:17,968 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 15:53:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:17,969 INFO L225 Difference]: With dead ends: 1305 [2021-11-19 15:53:17,969 INFO L226 Difference]: Without dead ends: 1197 [2021-11-19 15:53:17,970 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 15:53:17,970 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 1902 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1902 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:17,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1902 Valid, 1459 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 15:53:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-19 15:53:18,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 685. [2021-11-19 15:53:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 669 states have (on average 1.3168908819133034) internal successors, (881), 684 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 881 transitions. [2021-11-19 15:53:18,316 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 881 transitions. Word has length 113 [2021-11-19 15:53:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:18,317 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 881 transitions. [2021-11-19 15:53:18,317 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 15:53:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 881 transitions. [2021-11-19 15:53:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:18,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:18,318 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, 1, 1, 1] [2021-11-19 15:53:18,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-19 15:53:18,318 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:18,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:18,319 INFO L85 PathProgramCache]: Analyzing trace with hash -346640280, now seen corresponding path program 1 times [2021-11-19 15:53:18,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:18,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858896522] [2021-11-19 15:53:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:18,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:18,444 INFO 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 15:53:18,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:18,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858896522] [2021-11-19 15:53:18,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858896522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:18,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:18,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:18,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256186507] [2021-11-19 15:53:18,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:18,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:18,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:18,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:18,446 INFO L87 Difference]: Start difference. First operand 685 states and 881 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 15:53:20,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:20,298 INFO L93 Difference]: Finished difference Result 1309 states and 1698 transitions. [2021-11-19 15:53:20,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:53:20,299 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 15:53:20,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:20,300 INFO L225 Difference]: With dead ends: 1309 [2021-11-19 15:53:20,300 INFO L226 Difference]: Without dead ends: 1197 [2021-11-19 15:53:20,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:53:20,301 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 1646 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:20,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1646 Valid, 1507 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 15:53:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-19 15:53:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 685. [2021-11-19 15:53:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 669 states have (on average 1.3139013452914798) internal successors, (879), 684 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 879 transitions. [2021-11-19 15:53:20,619 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 879 transitions. Word has length 113 [2021-11-19 15:53:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:20,619 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 879 transitions. [2021-11-19 15:53:20,620 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 15:53:20,620 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 879 transitions. [2021-11-19 15:53:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:20,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:20,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:20,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-19 15:53:20,621 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash 110435457, now seen corresponding path program 1 times [2021-11-19 15:53:20,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:20,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736963670] [2021-11-19 15:53:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:20,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:20,759 INFO 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 15:53:20,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:20,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736963670] [2021-11-19 15:53:20,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736963670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:20,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:20,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:20,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986297341] [2021-11-19 15:53:20,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:20,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:20,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:20,762 INFO L87 Difference]: Start difference. First operand 685 states and 879 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 15:53:22,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:22,864 INFO L93 Difference]: Finished difference Result 1365 states and 1779 transitions. [2021-11-19 15:53:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:53:22,865 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 15:53:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:22,867 INFO L225 Difference]: With dead ends: 1365 [2021-11-19 15:53:22,867 INFO L226 Difference]: Without dead ends: 1237 [2021-11-19 15:53:22,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:53:22,868 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 1183 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:22,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 2102 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:53:22,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2021-11-19 15:53:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 685. [2021-11-19 15:53:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 669 states have (on average 1.3109118086696563) internal successors, (877), 684 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 877 transitions. [2021-11-19 15:53:23,204 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 877 transitions. Word has length 113 [2021-11-19 15:53:23,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:23,204 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 877 transitions. [2021-11-19 15:53:23,204 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 15:53:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 877 transitions. [2021-11-19 15:53:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:23,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:23,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:23,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-19 15:53:23,206 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:23,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:23,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1845433167, now seen corresponding path program 1 times [2021-11-19 15:53:23,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:23,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186161558] [2021-11-19 15:53:23,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:23,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:23,357 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 15:53:23,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:23,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186161558] [2021-11-19 15:53:23,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186161558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:23,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:23,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:23,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633740898] [2021-11-19 15:53:23,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:23,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:23,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:23,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:23,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:23,360 INFO L87 Difference]: Start difference. First operand 685 states and 877 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 15:53:25,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:25,291 INFO L93 Difference]: Finished difference Result 1309 states and 1694 transitions. [2021-11-19 15:53:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:53:25,291 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 15:53:25,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:25,293 INFO L225 Difference]: With dead ends: 1309 [2021-11-19 15:53:25,293 INFO L226 Difference]: Without dead ends: 1197 [2021-11-19 15:53:25,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:53:25,296 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1638 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:25,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1638 Valid, 1563 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 15:53:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-19 15:53:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 685. [2021-11-19 15:53:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 669 states have (on average 1.3079222720478325) internal successors, (875), 684 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 875 transitions. [2021-11-19 15:53:25,630 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 875 transitions. Word has length 113 [2021-11-19 15:53:25,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:25,631 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 875 transitions. [2021-11-19 15:53:25,631 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 15:53:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 875 transitions. [2021-11-19 15:53:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:25,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:25,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:25,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-19 15:53:25,632 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:25,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:25,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1992458392, now seen corresponding path program 1 times [2021-11-19 15:53:25,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:25,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652587165] [2021-11-19 15:53:25,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:25,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:25,773 INFO 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 15:53:25,774 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:25,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652587165] [2021-11-19 15:53:25,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652587165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:25,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:25,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:25,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707468551] [2021-11-19 15:53:25,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:25,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:25,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:25,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:25,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:25,777 INFO L87 Difference]: Start difference. First operand 685 states and 875 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 15:53:27,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:27,892 INFO L93 Difference]: Finished difference Result 1365 states and 1771 transitions. [2021-11-19 15:53:27,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:53:27,893 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 15:53:27,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:27,895 INFO L225 Difference]: With dead ends: 1365 [2021-11-19 15:53:27,895 INFO L226 Difference]: Without dead ends: 1237 [2021-11-19 15:53:27,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:53:27,896 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 1135 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:27,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 2021 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:53:27,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2021-11-19 15:53:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 685. [2021-11-19 15:53:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 669 states have (on average 1.304932735426009) internal successors, (873), 684 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 873 transitions. [2021-11-19 15:53:28,229 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 873 transitions. Word has length 113 [2021-11-19 15:53:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:28,229 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 873 transitions. [2021-11-19 15:53:28,229 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 15:53:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 873 transitions. [2021-11-19 15:53:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:28,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:28,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:28,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-19 15:53:28,230 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:28,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:28,231 INFO L85 PathProgramCache]: Analyzing trace with hash -502817302, now seen corresponding path program 1 times [2021-11-19 15:53:28,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:28,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157909213] [2021-11-19 15:53:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:28,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:28,358 INFO 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 15:53:28,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:28,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157909213] [2021-11-19 15:53:28,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157909213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:28,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:28,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:28,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102789910] [2021-11-19 15:53:28,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:28,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:28,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:28,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:28,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:28,360 INFO L87 Difference]: Start difference. First operand 685 states and 873 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 15:53:30,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:30,379 INFO L93 Difference]: Finished difference Result 1309 states and 1690 transitions. [2021-11-19 15:53:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:53:30,379 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 15:53:30,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:30,381 INFO L225 Difference]: With dead ends: 1309 [2021-11-19 15:53:30,381 INFO L226 Difference]: Without dead ends: 1197 [2021-11-19 15:53:30,382 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 15:53:30,382 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1221 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:30,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1221 Valid, 1630 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 15:53:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-19 15:53:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 685. [2021-11-19 15:53:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 669 states have (on average 1.3019431988041854) internal successors, (871), 684 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 871 transitions. [2021-11-19 15:53:30,710 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 871 transitions. Word has length 113 [2021-11-19 15:53:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:30,710 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 871 transitions. [2021-11-19 15:53:30,710 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 15:53:30,711 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 871 transitions. [2021-11-19 15:53:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:30,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:30,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:30,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-19 15:53:30,712 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash 169576250, now seen corresponding path program 1 times [2021-11-19 15:53:30,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:30,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236773017] [2021-11-19 15:53:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:30,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:53:30,827 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:30,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236773017] [2021-11-19 15:53:30,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236773017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:30,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:30,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:30,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191146666] [2021-11-19 15:53:30,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:30,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:30,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:30,828 INFO L87 Difference]: Start difference. First operand 685 states and 871 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 15:53:32,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:32,907 INFO L93 Difference]: Finished difference Result 1305 states and 1681 transitions. [2021-11-19 15:53:32,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:53:32,908 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 15:53:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:32,909 INFO L225 Difference]: With dead ends: 1305 [2021-11-19 15:53:32,910 INFO L226 Difference]: Without dead ends: 1197 [2021-11-19 15:53:32,910 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 15:53:32,910 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1711 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:32,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1711 Valid, 1633 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:53:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-19 15:53:33,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 685. [2021-11-19 15:53:33,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 669 states have (on average 1.2989536621823616) internal successors, (869), 684 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:33,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 869 transitions. [2021-11-19 15:53:33,243 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 869 transitions. Word has length 113 [2021-11-19 15:53:33,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:33,243 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 869 transitions. [2021-11-19 15:53:33,243 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 15:53:33,243 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 869 transitions. [2021-11-19 15:53:33,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:33,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:33,244 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:53:33,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-19 15:53:33,244 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:33,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:33,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1526738031, now seen corresponding path program 1 times [2021-11-19 15:53:33,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:33,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154959743] [2021-11-19 15:53:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:33,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:33,389 INFO 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 15:53:33,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:33,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154959743] [2021-11-19 15:53:33,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154959743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:33,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:33,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:33,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741801408] [2021-11-19 15:53:33,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:33,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:33,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:33,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:33,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:33,392 INFO L87 Difference]: Start difference. First operand 685 states and 869 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 15:53:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:35,528 INFO L93 Difference]: Finished difference Result 1309 states and 1684 transitions. [2021-11-19 15:53:35,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:53:35,529 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 15:53:35,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:35,531 INFO L225 Difference]: With dead ends: 1309 [2021-11-19 15:53:35,531 INFO L226 Difference]: Without dead ends: 1197 [2021-11-19 15:53:35,531 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 15:53:35,532 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1217 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:35,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1217 Valid, 1630 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:53:35,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-19 15:53:35,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 685. [2021-11-19 15:53:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 669 states have (on average 1.295964125560538) internal successors, (867), 684 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 867 transitions. [2021-11-19 15:53:35,869 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 867 transitions. Word has length 113 [2021-11-19 15:53:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:35,869 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 867 transitions. [2021-11-19 15:53:35,869 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 15:53:35,869 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 867 transitions. [2021-11-19 15:53:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:35,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:35,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:35,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-19 15:53:35,870 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash -852989034, now seen corresponding path program 1 times [2021-11-19 15:53:35,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:35,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900578726] [2021-11-19 15:53:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:35,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:53:36,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:36,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900578726] [2021-11-19 15:53:36,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900578726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:36,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:36,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:36,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783478733] [2021-11-19 15:53:36,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:36,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:36,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:36,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:36,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:36,010 INFO L87 Difference]: Start difference. First operand 685 states and 867 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 15:53:38,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:38,115 INFO L93 Difference]: Finished difference Result 1305 states and 1675 transitions. [2021-11-19 15:53:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:53:38,116 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 15:53:38,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:38,117 INFO L225 Difference]: With dead ends: 1305 [2021-11-19 15:53:38,117 INFO L226 Difference]: Without dead ends: 1197 [2021-11-19 15:53:38,118 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 15:53:38,118 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1697 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:38,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1697 Valid, 1649 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:53:38,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-19 15:53:38,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 685. [2021-11-19 15:53:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 669 states have (on average 1.2929745889387145) internal successors, (865), 684 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:38,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 865 transitions. [2021-11-19 15:53:38,455 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 865 transitions. Word has length 113 [2021-11-19 15:53:38,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:38,455 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 865 transitions. [2021-11-19 15:53:38,456 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 15:53:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 865 transitions. [2021-11-19 15:53:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:38,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:38,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:53:38,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-19 15:53:38,457 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:38,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1573578092, now seen corresponding path program 1 times [2021-11-19 15:53:38,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:38,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775715772] [2021-11-19 15:53:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:38,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:38,590 INFO 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 15:53:38,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:38,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775715772] [2021-11-19 15:53:38,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775715772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:38,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:38,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:38,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258775527] [2021-11-19 15:53:38,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:38,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:38,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:38,592 INFO L87 Difference]: Start difference. First operand 685 states and 865 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 15:53:40,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:40,596 INFO L93 Difference]: Finished difference Result 1305 states and 1673 transitions. [2021-11-19 15:53:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:53:40,597 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 15:53:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:40,598 INFO L225 Difference]: With dead ends: 1305 [2021-11-19 15:53:40,599 INFO L226 Difference]: Without dead ends: 1197 [2021-11-19 15:53:40,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:53:40,600 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 1564 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:40,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 1648 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 15:53:40,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-19 15:53:40,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 685. [2021-11-19 15:53:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 669 states have (on average 1.289985052316891) internal successors, (863), 684 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 863 transitions. [2021-11-19 15:53:40,941 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 863 transitions. Word has length 113 [2021-11-19 15:53:40,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:40,941 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 863 transitions. [2021-11-19 15:53:40,941 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 15:53:40,941 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 863 transitions. [2021-11-19 15:53:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:53:40,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:40,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:40,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-19 15:53:40,943 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash 292912905, now seen corresponding path program 1 times [2021-11-19 15:53:40,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:40,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230346729] [2021-11-19 15:53:40,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:40,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:41,299 INFO 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 15:53:41,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:41,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230346729] [2021-11-19 15:53:41,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230346729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:41,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:41,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 15:53:41,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606143704] [2021-11-19 15:53:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:41,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:53:41,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:41,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:53:41,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:53:41,301 INFO L87 Difference]: Start difference. First operand 685 states and 863 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 15:53:43,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:43,829 INFO L93 Difference]: Finished difference Result 1689 states and 2189 transitions. [2021-11-19 15:53:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:53:43,830 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 15:53:43,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:43,831 INFO L225 Difference]: With dead ends: 1689 [2021-11-19 15:53:43,832 INFO L226 Difference]: Without dead ends: 1499 [2021-11-19 15:53:43,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 15:53:43,833 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 2463 mSDsluCounter, 4588 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2463 SdHoareTripleChecker+Valid, 5308 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:43,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2463 Valid, 5308 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 15:53:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2021-11-19 15:53:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 599. [2021-11-19 15:53:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 584 states have (on average 1.2842465753424657) internal successors, (750), 598 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 750 transitions. [2021-11-19 15:53:44,167 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 750 transitions. Word has length 113 [2021-11-19 15:53:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:44,168 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 750 transitions. [2021-11-19 15:53:44,168 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 15:53:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 750 transitions. [2021-11-19 15:53:44,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 15:53:44,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:44,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:44,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-19 15:53:44,169 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:44,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:44,170 INFO L85 PathProgramCache]: Analyzing trace with hash -190053982, now seen corresponding path program 1 times [2021-11-19 15:53:44,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:44,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679862454] [2021-11-19 15:53:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:44,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:53:44,279 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:44,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679862454] [2021-11-19 15:53:44,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679862454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:44,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:44,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:53:44,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273625627] [2021-11-19 15:53:44,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:44,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:53:44,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:53:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:53:44,282 INFO L87 Difference]: Start difference. First operand 599 states and 750 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 15:53:46,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:46,185 INFO L93 Difference]: Finished difference Result 1181 states and 1510 transitions. [2021-11-19 15:53:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:53:46,186 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 15:53:46,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:46,187 INFO L225 Difference]: With dead ends: 1181 [2021-11-19 15:53:46,187 INFO L226 Difference]: Without dead ends: 1069 [2021-11-19 15:53:46,188 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 15:53:46,188 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1558 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:46,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 1457 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 15:53:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-19 15:53:46,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 591. [2021-11-19 15:53:46,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 576 states have (on average 1.2847222222222223) internal successors, (740), 590 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:46,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 740 transitions. [2021-11-19 15:53:46,509 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 740 transitions. Word has length 114 [2021-11-19 15:53:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:46,509 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 740 transitions. [2021-11-19 15:53:46,509 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 15:53:46,510 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 740 transitions. [2021-11-19 15:53:46,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 15:53:46,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:46,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:46,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-19 15:53:46,511 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:46,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:46,511 INFO L85 PathProgramCache]: Analyzing trace with hash 231732395, now seen corresponding path program 1 times [2021-11-19 15:53:46,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:46,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145362953] [2021-11-19 15:53:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:46,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:46,956 INFO 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 15:53:46,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:46,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145362953] [2021-11-19 15:53:46,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145362953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:46,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:46,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 15:53:46,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470005566] [2021-11-19 15:53:46,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:46,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 15:53:46,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:46,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 15:53:46,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:53:46,958 INFO L87 Difference]: Start difference. First operand 591 states and 740 transitions. Second operand has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 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 15:53:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:49,355 INFO L93 Difference]: Finished difference Result 1338 states and 1663 transitions. [2021-11-19 15:53:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:53:49,356 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 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 15:53:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:49,358 INFO L225 Difference]: With dead ends: 1338 [2021-11-19 15:53:49,358 INFO L226 Difference]: Without dead ends: 1228 [2021-11-19 15:53:49,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-11-19 15:53:49,359 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 2524 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:49,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2524 Valid, 2877 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 15:53:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-11-19 15:53:49,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 581. [2021-11-19 15:53:49,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 567 states have (on average 1.2786596119929454) internal successors, (725), 580 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 725 transitions. [2021-11-19 15:53:49,730 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 725 transitions. Word has length 115 [2021-11-19 15:53:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:49,731 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 725 transitions. [2021-11-19 15:53:49,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 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 15:53:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 725 transitions. [2021-11-19 15:53:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 15:53:49,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:49,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:53:49,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-19 15:53:49,732 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash -728867118, now seen corresponding path program 1 times [2021-11-19 15:53:49,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:49,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029409000] [2021-11-19 15:53:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:49,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:50,115 INFO 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 15:53:50,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:50,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029409000] [2021-11-19 15:53:50,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029409000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:50,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:50,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 15:53:50,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299164018] [2021-11-19 15:53:50,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:50,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:53:50,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:50,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:53:50,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:53:50,117 INFO L87 Difference]: Start difference. First operand 581 states and 725 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 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 15:53:52,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:52,414 INFO L93 Difference]: Finished difference Result 1501 states and 1933 transitions. [2021-11-19 15:53:52,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:53:52,414 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 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 15:53:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:52,416 INFO L225 Difference]: With dead ends: 1501 [2021-11-19 15:53:52,416 INFO L226 Difference]: Without dead ends: 1343 [2021-11-19 15:53:52,417 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 15:53:52,417 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 2120 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2120 SdHoareTripleChecker+Valid, 4767 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:52,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2120 Valid, 4767 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 15:53:52,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2021-11-19 15:53:52,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 527. [2021-11-19 15:53:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 516 states have (on average 1.2674418604651163) internal successors, (654), 526 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:52,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 654 transitions. [2021-11-19 15:53:52,738 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 654 transitions. Word has length 115 [2021-11-19 15:53:52,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:52,738 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 654 transitions. [2021-11-19 15:53:52,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 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 15:53:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 654 transitions. [2021-11-19 15:53:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 15:53:52,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:52,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:53:52,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-19 15:53:52,740 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:52,740 INFO L85 PathProgramCache]: Analyzing trace with hash -583909890, now seen corresponding path program 1 times [2021-11-19 15:53:52,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:52,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184633979] [2021-11-19 15:53:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:52,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:53,135 INFO 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 15:53:53,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:53,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184633979] [2021-11-19 15:53:53,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184633979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:53,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:53,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 15:53:53,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593718305] [2021-11-19 15:53:53,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:53,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 15:53:53,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:53,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 15:53:53,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:53:53,137 INFO L87 Difference]: Start difference. First operand 527 states and 654 transitions. Second operand has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 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 15:53:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:56,642 INFO L93 Difference]: Finished difference Result 1899 states and 2464 transitions. [2021-11-19 15:53:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 15:53:56,642 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 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 15:53:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:56,644 INFO L225 Difference]: With dead ends: 1899 [2021-11-19 15:53:56,644 INFO L226 Difference]: Without dead ends: 1683 [2021-11-19 15:53:56,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-19 15:53:56,646 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 1818 mSDsluCounter, 5741 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:56,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1818 Valid, 6342 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 15:53:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-11-19 15:53:56,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 415. [2021-11-19 15:53:56,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 408 states have (on average 1.2450980392156863) internal successors, (508), 414 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:53:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 508 transitions. [2021-11-19 15:53:56,948 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 508 transitions. Word has length 115 [2021-11-19 15:53:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:56,949 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 508 transitions. [2021-11-19 15:53:56,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 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 15:53:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 508 transitions. [2021-11-19 15:53:56,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 15:53:56,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:56,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:56,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-19 15:53:56,950 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:53:56,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:56,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1953371427, now seen corresponding path program 1 times [2021-11-19 15:53:56,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:53:56,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427429429] [2021-11-19 15:53:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:56,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:53:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:53:57,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:53:57,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427429429] [2021-11-19 15:53:57,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427429429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:57,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:53:57,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-19 15:53:57,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842101338] [2021-11-19 15:53:57,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:57,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 15:53:57,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:53:57,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 15:53:57,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:53:57,589 INFO L87 Difference]: Start difference. First operand 415 states and 508 transitions. Second operand has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 16 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 15:54:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:00,632 INFO L93 Difference]: Finished difference Result 1451 states and 1862 transitions. [2021-11-19 15:54:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 15:54:00,633 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 16 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 15:54:00,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:00,635 INFO L225 Difference]: With dead ends: 1451 [2021-11-19 15:54:00,635 INFO L226 Difference]: Without dead ends: 1231 [2021-11-19 15:54:00,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 15:54:00,636 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 2371 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2371 SdHoareTripleChecker+Valid, 5376 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:00,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2371 Valid, 5376 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 15:54:00,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-11-19 15:54:00,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 415. [2021-11-19 15:54:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 408 states have (on average 1.2401960784313726) internal successors, (506), 414 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 15:54:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 506 transitions. [2021-11-19 15:54:00,974 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 506 transitions. Word has length 115 [2021-11-19 15:54:00,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:00,974 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 506 transitions. [2021-11-19 15:54:00,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 16 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 15:54:00,974 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 506 transitions. [2021-11-19 15:54:00,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 15:54:00,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:00,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:00,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-19 15:54:00,975 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:00,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:00,976 INFO L85 PathProgramCache]: Analyzing trace with hash 893322758, now seen corresponding path program 1 times [2021-11-19 15:54:00,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:00,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950533603] [2021-11-19 15:54:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:00,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:01,088 INFO 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 15:54:01,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:01,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950533603] [2021-11-19 15:54:01,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950533603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:01,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:01,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:54:01,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563953928] [2021-11-19 15:54:01,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:01,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:54:01,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:01,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:54:01,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:54:01,091 INFO L87 Difference]: Start difference. First operand 415 states and 506 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 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 15:54:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:02,121 INFO L93 Difference]: Finished difference Result 612 states and 754 transitions. [2021-11-19 15:54:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 15:54:02,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 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 15:54:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:02,123 INFO L225 Difference]: With dead ends: 612 [2021-11-19 15:54:02,123 INFO L226 Difference]: Without dead ends: 605 [2021-11-19 15:54:02,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:54:02,123 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 705 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:02,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 878 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 15:54:02,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-11-19 15:54:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 415. [2021-11-19 15:54:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 408 states have (on average 1.2377450980392157) internal successors, (505), 414 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 505 transitions. [2021-11-19 15:54:02,436 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 505 transitions. Word has length 116 [2021-11-19 15:54:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:02,436 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 505 transitions. [2021-11-19 15:54:02,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 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 15:54:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 505 transitions. [2021-11-19 15:54:02,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 15:54:02,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:02,438 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] [2021-11-19 15:54:02,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-19 15:54:02,438 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:02,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:02,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1400584479, now seen corresponding path program 1 times [2021-11-19 15:54:02,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:02,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500160651] [2021-11-19 15:54:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:02,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:02,556 INFO 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 15:54:02,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:02,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500160651] [2021-11-19 15:54:02,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500160651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:02,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:02,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:54:02,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440878274] [2021-11-19 15:54:02,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:02,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:54:02,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:02,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:54:02,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:54:02,558 INFO L87 Difference]: Start difference. First operand 415 states and 505 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 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 15:54:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:04,308 INFO L93 Difference]: Finished difference Result 983 states and 1248 transitions. [2021-11-19 15:54:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:54:04,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 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 15:54:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:04,310 INFO L225 Difference]: With dead ends: 983 [2021-11-19 15:54:04,310 INFO L226 Difference]: Without dead ends: 849 [2021-11-19 15:54:04,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:54:04,313 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1031 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:04,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 1241 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 15:54:04,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-19 15:54:04,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 415. [2021-11-19 15:54:04,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 408 states have (on average 1.232843137254902) internal successors, (503), 414 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 503 transitions. [2021-11-19 15:54:04,638 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 503 transitions. Word has length 116 [2021-11-19 15:54:04,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:04,638 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 503 transitions. [2021-11-19 15:54:04,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 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 15:54:04,638 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 503 transitions. [2021-11-19 15:54:04,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 15:54:04,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:04,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:04,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-19 15:54:04,639 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:04,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:04,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1648149458, now seen corresponding path program 1 times [2021-11-19 15:54:04,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:04,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668083721] [2021-11-19 15:54:04,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:04,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:05,105 INFO 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 15:54:05,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:05,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668083721] [2021-11-19 15:54:05,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668083721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:05,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:05,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 15:54:05,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895978771] [2021-11-19 15:54:05,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:05,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 15:54:05,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:05,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 15:54:05,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:54:05,107 INFO L87 Difference]: Start difference. First operand 415 states and 503 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 15:54:07,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:07,662 INFO L93 Difference]: Finished difference Result 1009 states and 1254 transitions. [2021-11-19 15:54:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 15:54:07,662 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 15:54:07,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:07,663 INFO L225 Difference]: With dead ends: 1009 [2021-11-19 15:54:07,664 INFO L226 Difference]: Without dead ends: 899 [2021-11-19 15:54:07,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-19 15:54:07,664 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1528 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:07,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 2861 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 15:54:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-11-19 15:54:07,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 403. [2021-11-19 15:54:07,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 397 states have (on average 1.2241813602015112) internal successors, (486), 402 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:07,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 486 transitions. [2021-11-19 15:54:07,993 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 486 transitions. Word has length 116 [2021-11-19 15:54:07,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:07,993 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 486 transitions. [2021-11-19 15:54:07,993 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 15:54:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 486 transitions. [2021-11-19 15:54:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 15:54:07,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:07,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:07,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-19 15:54:07,994 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:07,995 INFO L85 PathProgramCache]: Analyzing trace with hash -326017579, now seen corresponding path program 1 times [2021-11-19 15:54:07,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:07,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782665890] [2021-11-19 15:54:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:07,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:08,405 INFO 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 15:54:08,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:08,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782665890] [2021-11-19 15:54:08,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782665890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:08,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:08,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 15:54:08,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155541693] [2021-11-19 15:54:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:08,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:54:08,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:08,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:54:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:54:08,407 INFO L87 Difference]: Start difference. First operand 403 states and 486 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 15:54:10,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:10,463 INFO L93 Difference]: Finished difference Result 1071 states and 1341 transitions. [2021-11-19 15:54:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:54:10,463 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 15:54:10,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:10,465 INFO L225 Difference]: With dead ends: 1071 [2021-11-19 15:54:10,465 INFO L226 Difference]: Without dead ends: 855 [2021-11-19 15:54:10,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-19 15:54:10,469 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 1260 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:10,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1260 Valid, 2855 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 15:54:10,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-11-19 15:54:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 291. [2021-11-19 15:54:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 288 states have (on average 1.1979166666666667) internal successors, (345), 290 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 345 transitions. [2021-11-19 15:54:10,769 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 345 transitions. Word has length 116 [2021-11-19 15:54:10,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:10,769 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 345 transitions. [2021-11-19 15:54:10,770 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 15:54:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 345 transitions. [2021-11-19 15:54:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 15:54:10,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:10,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:10,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-19 15:54:10,771 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:10,771 INFO L85 PathProgramCache]: Analyzing trace with hash -73583846, now seen corresponding path program 1 times [2021-11-19 15:54:10,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:10,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242626854] [2021-11-19 15:54:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:10,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:12,004 INFO 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 15:54:12,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:12,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242626854] [2021-11-19 15:54:12,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242626854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:12,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:12,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-19 15:54:12,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931540890] [2021-11-19 15:54:12,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:12,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-19 15:54:12,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-19 15:54:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2021-11-19 15:54:12,006 INFO L87 Difference]: Start difference. First operand 291 states and 345 transitions. Second operand has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 25 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 15:54:21,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:21,007 INFO L93 Difference]: Finished difference Result 1845 states and 2354 transitions. [2021-11-19 15:54:21,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-19 15:54:21,007 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 25 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 15:54:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:21,010 INFO L225 Difference]: With dead ends: 1845 [2021-11-19 15:54:21,010 INFO L226 Difference]: Without dead ends: 1839 [2021-11-19 15:54:21,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=485, Invalid=2377, Unknown=0, NotChecked=0, Total=2862 [2021-11-19 15:54:21,011 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 2188 mSDsluCounter, 12176 mSDsCounter, 0 mSdLazyCounter, 5293 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 12458 SdHoareTripleChecker+Invalid, 5387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 5293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:21,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2188 Valid, 12458 Invalid, 5387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 5293 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 15:54:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2021-11-19 15:54:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 323. [2021-11-19 15:54:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 320 states have (on average 1.203125) internal successors, (385), 322 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 385 transitions. [2021-11-19 15:54:21,347 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 385 transitions. Word has length 118 [2021-11-19 15:54:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:21,347 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 385 transitions. [2021-11-19 15:54:21,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 25 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 15:54:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 385 transitions. [2021-11-19 15:54:21,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 15:54:21,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:21,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:21,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-19 15:54:21,348 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:21,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:21,349 INFO L85 PathProgramCache]: Analyzing trace with hash -159310399, now seen corresponding path program 1 times [2021-11-19 15:54:21,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:21,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794801249] [2021-11-19 15:54:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:21,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:24,060 INFO 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 15:54:24,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:24,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794801249] [2021-11-19 15:54:24,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794801249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:24,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:24,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-19 15:54:24,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416184616] [2021-11-19 15:54:24,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:24,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-19 15:54:24,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-19 15:54:24,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1269, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 15:54:24,062 INFO L87 Difference]: Start difference. First operand 323 states and 385 transitions. Second operand has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 37 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 15:54:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:30,287 INFO L93 Difference]: Finished difference Result 382 states and 448 transitions. [2021-11-19 15:54:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 15:54:30,288 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 37 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 15:54:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:30,288 INFO L225 Difference]: With dead ends: 382 [2021-11-19 15:54:30,288 INFO L226 Difference]: Without dead ends: 374 [2021-11-19 15:54:30,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=739, Invalid=4231, Unknown=0, NotChecked=0, Total=4970 [2021-11-19 15:54:30,290 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 884 mSDsluCounter, 3228 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:30,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 3300 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 15:54:30,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-19 15:54:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 347. [2021-11-19 15:54:30,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 344 states have (on average 1.2034883720930232) internal successors, (414), 346 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 414 transitions. [2021-11-19 15:54:30,657 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 414 transitions. Word has length 118 [2021-11-19 15:54:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:30,657 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 414 transitions. [2021-11-19 15:54:30,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 37 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 15:54:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 414 transitions. [2021-11-19 15:54:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 15:54:30,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:30,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:30,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-19 15:54:30,659 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:30,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:30,659 INFO L85 PathProgramCache]: Analyzing trace with hash 648886577, now seen corresponding path program 1 times [2021-11-19 15:54:30,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:30,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91282402] [2021-11-19 15:54:30,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:30,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:54:31,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:31,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91282402] [2021-11-19 15:54:31,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91282402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:31,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:31,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 15:54:31,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479969850] [2021-11-19 15:54:31,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:31,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:54:31,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:31,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:54:31,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:54:31,039 INFO L87 Difference]: Start difference. First operand 347 states and 414 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 15:54:32,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:32,992 INFO L93 Difference]: Finished difference Result 767 states and 961 transitions. [2021-11-19 15:54:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:54:32,993 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 15:54:32,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:32,994 INFO L225 Difference]: With dead ends: 767 [2021-11-19 15:54:32,994 INFO L226 Difference]: Without dead ends: 752 [2021-11-19 15:54:32,994 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 15:54:32,995 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 1127 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:32,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1127 Valid, 2187 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:54:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-19 15:54:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 311. [2021-11-19 15:54:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 309 states have (on average 1.2006472491909386) internal successors, (371), 310 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 371 transitions. [2021-11-19 15:54:33,333 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 371 transitions. Word has length 119 [2021-11-19 15:54:33,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:33,333 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 371 transitions. [2021-11-19 15:54:33,333 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 15:54:33,333 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 371 transitions. [2021-11-19 15:54:33,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 15:54:33,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:33,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:33,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-19 15:54:33,335 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:33,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:33,335 INFO L85 PathProgramCache]: Analyzing trace with hash 843658736, now seen corresponding path program 1 times [2021-11-19 15:54:33,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:33,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601711865] [2021-11-19 15:54:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:33,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:33,677 INFO 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 15:54:33,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:33,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601711865] [2021-11-19 15:54:33,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601711865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:33,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:33,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 15:54:33,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624731300] [2021-11-19 15:54:33,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:33,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:54:33,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:33,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:54:33,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:54:33,679 INFO L87 Difference]: Start difference. First operand 311 states and 371 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 15:54:35,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:35,453 INFO L93 Difference]: Finished difference Result 677 states and 851 transitions. [2021-11-19 15:54:35,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:54:35,453 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 15:54:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:35,454 INFO L225 Difference]: With dead ends: 677 [2021-11-19 15:54:35,454 INFO L226 Difference]: Without dead ends: 671 [2021-11-19 15:54:35,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:54:35,455 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 704 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:35,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 1740 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:54:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-11-19 15:54:35,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 273. [2021-11-19 15:54:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.1911764705882353) internal successors, (324), 272 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 324 transitions. [2021-11-19 15:54:35,772 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 324 transitions. Word has length 119 [2021-11-19 15:54:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:35,773 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 324 transitions. [2021-11-19 15:54:35,773 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 15:54:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 324 transitions. [2021-11-19 15:54:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-19 15:54:35,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:35,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:35,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-19 15:54:35,774 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1175678301, now seen corresponding path program 1 times [2021-11-19 15:54:35,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:35,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729094549] [2021-11-19 15:54:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:35,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:54:35,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:35,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729094549] [2021-11-19 15:54:35,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729094549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:35,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:35,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:54:35,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136618310] [2021-11-19 15:54:35,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:35,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:54:35,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:54:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:54:35,867 INFO L87 Difference]: Start difference. First operand 273 states and 324 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:36,406 INFO L93 Difference]: Finished difference Result 385 states and 474 transitions. [2021-11-19 15:54:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:54:36,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-19 15:54:36,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:36,408 INFO L225 Difference]: With dead ends: 385 [2021-11-19 15:54:36,408 INFO L226 Difference]: Without dead ends: 332 [2021-11-19 15:54:36,408 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 15:54:36,408 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 83 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 390 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 15:54:36,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 390 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:54:36,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-19 15:54:36,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 322. [2021-11-19 15:54:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.2118380062305296) internal successors, (389), 321 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 389 transitions. [2021-11-19 15:54:36,852 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 389 transitions. Word has length 138 [2021-11-19 15:54:36,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:36,852 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 389 transitions. [2021-11-19 15:54:36,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 389 transitions. [2021-11-19 15:54:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-19 15:54:36,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:36,853 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, 1, 1, 1, 1, 1, 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 15:54:36,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-19 15:54:36,854 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:36,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash -440603623, now seen corresponding path program 1 times [2021-11-19 15:54:36,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:36,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025390628] [2021-11-19 15:54:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:36,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:54:36,929 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:36,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025390628] [2021-11-19 15:54:36,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025390628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:36,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:36,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:54:36,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596639145] [2021-11-19 15:54:36,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:36,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:54:36,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:36,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:54:36,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:54:36,932 INFO L87 Difference]: Start difference. First operand 322 states and 389 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:37,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:37,852 INFO L93 Difference]: Finished difference Result 624 states and 795 transitions. [2021-11-19 15:54:37,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:54:37,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-11-19 15:54:37,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:37,853 INFO L225 Difference]: With dead ends: 624 [2021-11-19 15:54:37,853 INFO L226 Difference]: Without dead ends: 473 [2021-11-19 15:54:37,854 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 15:54:37,854 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 76 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 390 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 15:54:37,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 390 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:54:37,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-19 15:54:38,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 459. [2021-11-19 15:54:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.2510917030567685) internal successors, (573), 458 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 573 transitions. [2021-11-19 15:54:38,683 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 573 transitions. Word has length 141 [2021-11-19 15:54:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:38,683 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 573 transitions. [2021-11-19 15:54:38,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 573 transitions. [2021-11-19 15:54:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-19 15:54:38,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:38,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:38,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-19 15:54:38,684 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:38,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:38,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1381161520, now seen corresponding path program 1 times [2021-11-19 15:54:38,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:38,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189519674] [2021-11-19 15:54:38,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:38,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:54:38,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:38,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189519674] [2021-11-19 15:54:38,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189519674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:38,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:38,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:54:38,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859826147] [2021-11-19 15:54:38,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:38,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:54:38,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:38,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:54:38,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:54:38,773 INFO L87 Difference]: Start difference. First operand 459 states and 573 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:40,573 INFO L93 Difference]: Finished difference Result 1035 states and 1347 transitions. [2021-11-19 15:54:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:54:40,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-19 15:54:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:40,574 INFO L225 Difference]: With dead ends: 1035 [2021-11-19 15:54:40,574 INFO L226 Difference]: Without dead ends: 747 [2021-11-19 15:54:40,575 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 15:54:40,576 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 69 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 390 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 15:54:40,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 390 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:54:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-19 15:54:42,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 721. [2021-11-19 15:54:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.2819444444444446) internal successors, (923), 720 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 923 transitions. [2021-11-19 15:54:42,108 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 923 transitions. Word has length 144 [2021-11-19 15:54:42,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:42,109 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 923 transitions. [2021-11-19 15:54:42,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 923 transitions. [2021-11-19 15:54:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-19 15:54:42,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:42,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:42,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-19 15:54:42,111 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1506626462, now seen corresponding path program 1 times [2021-11-19 15:54:42,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:42,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376618344] [2021-11-19 15:54:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:42,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:54:42,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:42,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376618344] [2021-11-19 15:54:42,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376618344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:42,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:42,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:54:42,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143641588] [2021-11-19 15:54:42,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:42,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:54:42,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:42,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:54:42,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:54:42,225 INFO L87 Difference]: Start difference. First operand 721 states and 923 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:45,245 INFO L93 Difference]: Finished difference Result 1821 states and 2397 transitions. [2021-11-19 15:54:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:54:45,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-19 15:54:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:45,247 INFO L225 Difference]: With dead ends: 1821 [2021-11-19 15:54:45,247 INFO L226 Difference]: Without dead ends: 1271 [2021-11-19 15:54:45,249 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 15:54:45,249 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 62 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 390 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 15:54:45,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 390 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:54:45,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2021-11-19 15:54:48,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1221. [2021-11-19 15:54:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.3008196721311476) internal successors, (1587), 1220 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1587 transitions. [2021-11-19 15:54:48,132 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1587 transitions. Word has length 147 [2021-11-19 15:54:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:48,132 INFO L470 AbstractCegarLoop]: Abstraction has 1221 states and 1587 transitions. [2021-11-19 15:54:48,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:48,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1587 transitions. [2021-11-19 15:54:48,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-19 15:54:48,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:48,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:48,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-19 15:54:48,133 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:48,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:48,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2060054265, now seen corresponding path program 1 times [2021-11-19 15:54:48,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:48,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404566569] [2021-11-19 15:54:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:48,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:48,208 INFO 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 15:54:48,209 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:48,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404566569] [2021-11-19 15:54:48,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404566569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:48,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:48,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:54:48,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989043926] [2021-11-19 15:54:48,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:48,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:54:48,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:54:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:54:48,212 INFO L87 Difference]: Start difference. First operand 1221 states and 1587 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:53,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:53,955 INFO L93 Difference]: Finished difference Result 3321 states and 4389 transitions. [2021-11-19 15:54:53,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:54:53,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-11-19 15:54:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:53,958 INFO L225 Difference]: With dead ends: 3321 [2021-11-19 15:54:53,958 INFO L226 Difference]: Without dead ends: 2271 [2021-11-19 15:54:53,960 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 15:54:53,960 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 55 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 390 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 15:54:53,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 390 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:54:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2021-11-19 15:54:59,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2173. [2021-11-19 15:54:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2172 states have (on average 1.3089318600368325) internal successors, (2843), 2172 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2843 transitions. [2021-11-19 15:54:59,453 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2843 transitions. Word has length 150 [2021-11-19 15:54:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:59,454 INFO L470 AbstractCegarLoop]: Abstraction has 2173 states and 2843 transitions. [2021-11-19 15:54:59,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:54:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2843 transitions. [2021-11-19 15:54:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-19 15:54:59,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:59,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:59,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-19 15:54:59,456 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:54:59,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1475492617, now seen corresponding path program 1 times [2021-11-19 15:54:59,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:54:59,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622005804] [2021-11-19 15:54:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:59,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:54:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:59,547 INFO 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 15:54:59,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:54:59,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622005804] [2021-11-19 15:54:59,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622005804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:59,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:59,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:54:59,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124949502] [2021-11-19 15:54:59,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:59,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:54:59,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:54:59,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:54:59,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:54:59,550 INFO L87 Difference]: Start difference. First operand 2173 states and 2843 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:55:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:55:09,209 INFO L93 Difference]: Finished difference Result 6177 states and 8157 transitions. [2021-11-19 15:55:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:55:09,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-19 15:55:09,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:55:09,214 INFO L225 Difference]: With dead ends: 6177 [2021-11-19 15:55:09,214 INFO L226 Difference]: Without dead ends: 4175 [2021-11-19 15:55:09,216 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 15:55:09,217 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 48 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 390 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 15:55:09,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 390 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:55:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2021-11-19 15:55:17,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 3981. [2021-11-19 15:55:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 3980 states have (on average 1.3092964824120603) internal successors, (5211), 3980 states have internal predecessors, (5211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:55:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 5211 transitions. [2021-11-19 15:55:17,852 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 5211 transitions. Word has length 153 [2021-11-19 15:55:17,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:55:17,852 INFO L470 AbstractCegarLoop]: Abstraction has 3981 states and 5211 transitions. [2021-11-19 15:55:17,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:55:17,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 5211 transitions. [2021-11-19 15:55:17,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-19 15:55:17,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:55:17,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:55:17,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-19 15:55:17,853 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:55:17,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:55:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1576468746, now seen corresponding path program 1 times [2021-11-19 15:55:17,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:55:17,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409976912] [2021-11-19 15:55:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:55:17,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:55:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:55:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:55:17,929 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:55:17,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409976912] [2021-11-19 15:55:17,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409976912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:55:17,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:55:17,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:55:17,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065426535] [2021-11-19 15:55:17,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:55:17,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:55:17,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:55:17,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:55:17,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:55:17,931 INFO L87 Difference]: Start difference. First operand 3981 states and 5211 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:55:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:55:36,480 INFO L93 Difference]: Finished difference Result 11601 states and 15261 transitions. [2021-11-19 15:55:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:55:36,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-19 15:55:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:55:36,490 INFO L225 Difference]: With dead ends: 11601 [2021-11-19 15:55:36,490 INFO L226 Difference]: Without dead ends: 7791 [2021-11-19 15:55:36,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:55:36,494 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 38 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 390 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 15:55:36,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 390 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:55:36,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7791 states. [2021-11-19 15:55:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7791 to 7405. [2021-11-19 15:55:52,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7405 states, 7404 states have (on average 1.3045650999459752) internal successors, (9659), 7404 states have internal predecessors, (9659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:55:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7405 states to 7405 states and 9659 transitions. [2021-11-19 15:55:52,670 INFO L78 Accepts]: Start accepts. Automaton has 7405 states and 9659 transitions. Word has length 156 [2021-11-19 15:55:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:55:52,670 INFO L470 AbstractCegarLoop]: Abstraction has 7405 states and 9659 transitions. [2021-11-19 15:55:52,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:55:52,671 INFO L276 IsEmpty]: Start isEmpty. Operand 7405 states and 9659 transitions. [2021-11-19 15:55:52,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-19 15:55:52,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:55:52,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:55:52,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-19 15:55:52,671 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:55:52,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:55:52,672 INFO L85 PathProgramCache]: Analyzing trace with hash -409619861, now seen corresponding path program 1 times [2021-11-19 15:55:52,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:55:52,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376183433] [2021-11-19 15:55:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:55:52,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:55:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:55:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:55:52,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:55:52,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376183433] [2021-11-19 15:55:52,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376183433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:55:52,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:55:52,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 15:55:52,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954728381] [2021-11-19 15:55:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:55:52,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:55:52,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:55:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:55:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:55:52,788 INFO L87 Difference]: Start difference. First operand 7405 states and 9659 transitions. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:56:49,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:56:49,156 INFO L93 Difference]: Finished difference Result 29916 states and 39320 transitions. [2021-11-19 15:56:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:56:49,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-19 15:56:49,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:56:49,194 INFO L225 Difference]: With dead ends: 29916 [2021-11-19 15:56:49,194 INFO L226 Difference]: Without dead ends: 22682 [2021-11-19 15:56:49,203 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 15:56:49,203 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 1553 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 3157 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 15:56:49,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1553 Valid, 3157 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:56:49,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22682 states. [2021-11-19 15:57:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22682 to 10087. [2021-11-19 15:57:14,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10087 states, 10086 states have (on average 1.299722387467777) internal successors, (13109), 10086 states have internal predecessors, (13109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:57:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10087 states to 10087 states and 13109 transitions. [2021-11-19 15:57:14,020 INFO L78 Accepts]: Start accepts. Automaton has 10087 states and 13109 transitions. Word has length 159 [2021-11-19 15:57:14,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:57:14,021 INFO L470 AbstractCegarLoop]: Abstraction has 10087 states and 13109 transitions. [2021-11-19 15:57:14,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:57:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 10087 states and 13109 transitions. [2021-11-19 15:57:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-19 15:57:14,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:57:14,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:14,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-19 15:57:14,022 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:57:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:57:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1479712535, now seen corresponding path program 1 times [2021-11-19 15:57:14,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:57:14,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619960679] [2021-11-19 15:57:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:57:14,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:57:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:57:14,096 INFO 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 15:57:14,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:57:14,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619960679] [2021-11-19 15:57:14,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619960679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:57:14,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:57:14,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:57:14,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202812884] [2021-11-19 15:57:14,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:57:14,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:57:14,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:57:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:57:14,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:57:14,099 INFO L87 Difference]: Start difference. First operand 10087 states and 13109 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:57:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:57:44,989 INFO L93 Difference]: Finished difference Result 22629 states and 29489 transitions. [2021-11-19 15:57:44,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:57:44,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-19 15:57:44,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:57:45,006 INFO L225 Difference]: With dead ends: 22629 [2021-11-19 15:57:45,006 INFO L226 Difference]: Without dead ends: 12713 [2021-11-19 15:57:45,013 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 15:57:45,013 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 108 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 301 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 15:57:45,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 301 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:57:45,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12713 states. [2021-11-19 15:58:15,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12713 to 12711. [2021-11-19 15:58:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12711 states, 12710 states have (on average 1.2930763178599527) internal successors, (16435), 12710 states have internal predecessors, (16435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:58:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 16435 transitions. [2021-11-19 15:58:15,274 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 16435 transitions. Word has length 161 [2021-11-19 15:58:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:58:15,274 INFO L470 AbstractCegarLoop]: Abstraction has 12711 states and 16435 transitions. [2021-11-19 15:58:15,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:58:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 16435 transitions. [2021-11-19 15:58:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-19 15:58:15,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:58:15,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:15,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-19 15:58:15,275 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:58:15,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:58:15,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1109840349, now seen corresponding path program 1 times [2021-11-19 15:58:15,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:58:15,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350928115] [2021-11-19 15:58:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:58:15,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:58:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:58:15,476 INFO 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 15:58:15,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:58:15,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350928115] [2021-11-19 15:58:15,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350928115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:58:15,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:58:15,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 15:58:15,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852582353] [2021-11-19 15:58:15,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:58:15,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:58:15,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:58:15,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:58:15,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:58:15,478 INFO L87 Difference]: Start difference. First operand 12711 states and 16435 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:58:45,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:58:45,820 INFO L93 Difference]: Finished difference Result 25253 states and 32685 transitions. [2021-11-19 15:58:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 15:58:45,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-19 15:58:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:58:45,838 INFO L225 Difference]: With dead ends: 25253 [2021-11-19 15:58:45,838 INFO L226 Difference]: Without dead ends: 12713 [2021-11-19 15:58:45,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:58:45,847 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 873 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:58:45,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 674 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:58:45,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12713 states. [2021-11-19 15:59:18,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12713 to 12711. [2021-11-19 15:59:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12711 states, 12710 states have (on average 1.292918961447679) internal successors, (16433), 12710 states have internal predecessors, (16433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:59:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 16433 transitions. [2021-11-19 15:59:19,002 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 16433 transitions. Word has length 161 [2021-11-19 15:59:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:59:19,003 INFO L470 AbstractCegarLoop]: Abstraction has 12711 states and 16433 transitions. [2021-11-19 15:59:19,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:59:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 16433 transitions. [2021-11-19 15:59:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-19 15:59:19,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:59:19,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:59:19,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-19 15:59:19,004 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 15:59:19,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:59:19,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2138110864, now seen corresponding path program 1 times [2021-11-19 15:59:19,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:59:19,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854920410] [2021-11-19 15:59:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:59:19,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:59:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:59:19,122 INFO 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 15:59:19,123 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:59:19,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854920410] [2021-11-19 15:59:19,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854920410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:59:19,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:59:19,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 15:59:19,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624211204] [2021-11-19 15:59:19,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:59:19,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:59:19,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:59:19,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:59:19,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:59:19,124 INFO L87 Difference]: Start difference. First operand 12711 states and 16433 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 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 16:00:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 16:00:12,084 INFO L93 Difference]: Finished difference Result 18509 states and 23588 transitions. [2021-11-19 16:00:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 16:00:12,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 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 16:00:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 16:00:12,110 INFO L225 Difference]: With dead ends: 18509 [2021-11-19 16:00:12,110 INFO L226 Difference]: Without dead ends: 18507 [2021-11-19 16:00:12,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-19 16:00:12,114 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 429 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 16:00:12,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1269 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 16:00:12,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18507 states. [2021-11-19 16:00:49,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18507 to 12711. [2021-11-19 16:00:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12711 states, 12710 states have (on average 1.2778127458693942) internal successors, (16241), 12710 states have internal predecessors, (16241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 16:00:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 16241 transitions. [2021-11-19 16:00:49,503 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 16241 transitions. Word has length 162 [2021-11-19 16:00:49,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 16:00:49,504 INFO L470 AbstractCegarLoop]: Abstraction has 12711 states and 16241 transitions. [2021-11-19 16:00:49,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 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 16:00:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 16241 transitions. [2021-11-19 16:00:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-19 16:00:49,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 16:00:49,506 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:49,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-19 16:00:49,506 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 16:00:49,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 16:00:49,507 INFO L85 PathProgramCache]: Analyzing trace with hash 426374333, now seen corresponding path program 1 times [2021-11-19 16:00:49,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 16:00:49,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841620043] [2021-11-19 16:00:49,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 16:00:49,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 16:00:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 16:00:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 16:00:49,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 16:00:49,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841620043] [2021-11-19 16:00:49,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841620043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 16:00:49,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 16:00:49,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 16:00:49,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873566814] [2021-11-19 16:00:49,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 16:00:49,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 16:00:49,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 16:00:49,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 16:00:49,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 16:00:49,742 INFO L87 Difference]: Start difference. First operand 12711 states and 16241 transitions. Second operand has 8 states, 8 states have (on average 21.375) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)