./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur --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 08e27279d8b0f092d8b126b1fa68f6a49bc0b5cda6842121ef1790310988da5f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:35:27,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:35:27,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:35:27,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:35:27,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:35:27,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:35:27,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:35:27,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:35:27,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:35:27,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:35:27,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:35:27,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:35:27,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:35:27,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:35:27,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:35:27,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:35:27,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:35:27,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:35:27,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:35:27,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:35:27,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:35:27,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:35:27,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:35:27,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:35:27,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:35:27,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:35:27,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:35:27,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:35:27,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:35:27,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:35:27,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:35:27,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:35:27,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:35:27,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:35:27,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:35:27,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:35:27,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:35:27,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:35:27,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:35:27,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:35:27,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:35:27,890 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:35:27,943 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:35:27,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:35:27,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:35:27,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:35:27,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:35:27,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:35:27,946 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:35:27,946 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:35:27,947 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:35:27,947 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:35:27,948 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:35:27,949 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:35:27,949 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:35:27,949 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:35:27,950 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:35:27,950 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:35:27,950 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:35:27,951 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:35:27,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:35:27,952 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:35:27,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:35:27,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:35:27,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:35:27,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:35:27,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:35:27,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:35:27,954 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:35:27,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:35:27,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:35:27,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:35:27,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:35:27,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:35:27,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:27,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:35:27,957 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:35:27,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:35:27,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:35:27,958 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:35:27,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:35:27,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:35:27,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:35:27,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08e27279d8b0f092d8b126b1fa68f6a49bc0b5cda6842121ef1790310988da5f [2022-11-26 00:35:28,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:35:28,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:35:28,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:35:28,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:35:28,387 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:35:28,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2022-11-26 00:35:32,023 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:35:32,562 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:35:32,563 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2022-11-26 00:35:32,605 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/data/9c1bdb6a8/f715832eb0d3481484790abc155dbd3c/FLAG71e7c8d5c [2022-11-26 00:35:32,632 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/data/9c1bdb6a8/f715832eb0d3481484790abc155dbd3c [2022-11-26 00:35:32,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:35:32,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:35:32,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:32,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:35:32,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:35:32,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:32" (1/1) ... [2022-11-26 00:35:32,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15dd6cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:32, skipping insertion in model container [2022-11-26 00:35:32,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:32" (1/1) ... [2022-11-26 00:35:32,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:35:32,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:35:33,517 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14183,14196] [2022-11-26 00:35:33,600 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18907,18920] [2022-11-26 00:35:33,618 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20199,20212] [2022-11-26 00:35:33,638 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20957,20970] [2022-11-26 00:35:33,653 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22620,22633] [2022-11-26 00:35:33,677 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23378,23391] [2022-11-26 00:35:33,686 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24507,24520] [2022-11-26 00:35:33,726 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27132,27145] [2022-11-26 00:35:33,733 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27893,27906] [2022-11-26 00:35:33,742 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29025,29038] [2022-11-26 00:35:33,758 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31116,31129] [2022-11-26 00:35:33,785 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35211,35224] [2022-11-26 00:35:33,793 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35972,35985] [2022-11-26 00:35:33,802 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37065,37078] [2022-11-26 00:35:33,817 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39117,39130] [2022-11-26 00:35:33,845 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42849,42862] [2022-11-26 00:35:33,888 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50027,50040] [2022-11-26 00:35:33,895 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50788,50801] [2022-11-26 00:35:33,903 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51920,51933] [2022-11-26 00:35:33,916 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[54011,54024] [2022-11-26 00:35:33,939 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57572,57585] [2022-11-26 00:35:33,974 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63570,63583] [2022-11-26 00:35:34,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:34,496 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:35:34,601 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14183,14196] [2022-11-26 00:35:34,654 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18907,18920] [2022-11-26 00:35:34,666 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20199,20212] [2022-11-26 00:35:34,675 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20957,20970] [2022-11-26 00:35:34,689 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22620,22633] [2022-11-26 00:35:34,698 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23378,23391] [2022-11-26 00:35:34,708 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24507,24520] [2022-11-26 00:35:34,723 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27132,27145] [2022-11-26 00:35:34,729 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27893,27906] [2022-11-26 00:35:34,737 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29025,29038] [2022-11-26 00:35:34,750 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31116,31129] [2022-11-26 00:35:34,770 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35211,35224] [2022-11-26 00:35:34,776 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35972,35985] [2022-11-26 00:35:34,782 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37065,37078] [2022-11-26 00:35:34,794 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39117,39130] [2022-11-26 00:35:34,814 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42849,42862] [2022-11-26 00:35:34,860 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50027,50040] [2022-11-26 00:35:34,866 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50788,50801] [2022-11-26 00:35:34,873 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51920,51933] [2022-11-26 00:35:34,886 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[54011,54024] [2022-11-26 00:35:34,905 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57572,57585] [2022-11-26 00:35:34,931 WARN L237 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_4c11ed02-cd76-495a-8808-f7e833b0a8ca/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63570,63583] [2022-11-26 00:35:35,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:35,326 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:35:35,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35 WrapperNode [2022-11-26 00:35:35,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:35,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:35,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:35:35,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:35:35,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,661 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6593 [2022-11-26 00:35:35,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:35,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:35:35,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:35:35,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:35:35,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,827 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:35:35,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:35:35,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:35:35,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:35:35,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:35,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:35:35,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:35:35,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:35:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:35:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:35:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:35:36,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:35:36,411 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:35:36,413 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:35:40,271 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:35:40,545 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:35:40,546 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:35:40,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:40 BoogieIcfgContainer [2022-11-26 00:35:40,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:35:40,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:35:40,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:35:40,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:35:40,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:35:32" (1/3) ... [2022-11-26 00:35:40,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec4a435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:40, skipping insertion in model container [2022-11-26 00:35:40,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35" (2/3) ... [2022-11-26 00:35:40,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec4a435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:40, skipping insertion in model container [2022-11-26 00:35:40,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:40" (3/3) ... [2022-11-26 00:35:40,561 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2022-11-26 00:35:40,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:35:40,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-26 00:35:40,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:35:40,699 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23838ee1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:35:40,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-26 00:35:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 1095 states, 1072 states have (on average 1.8600746268656716) internal successors, (1994), 1094 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) [2022-11-26 00:35:40,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-26 00:35:40,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:40,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:40,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:35:40,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:40,744 INFO L85 PathProgramCache]: Analyzing trace with hash 714056904, now seen corresponding path program 1 times [2022-11-26 00:35:40,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:40,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409306592] [2022-11-26 00:35:40,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:40,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:41,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:41,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409306592] [2022-11-26 00:35:41,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409306592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:41,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:41,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:35:41,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418008287] [2022-11-26 00:35:41,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:41,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:35:41,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:41,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:35:41,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:35:41,732 INFO L87 Difference]: Start difference. First operand has 1095 states, 1072 states have (on average 1.8600746268656716) internal successors, (1994), 1094 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) Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:42,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:42,835 INFO L93 Difference]: Finished difference Result 1642 states and 2887 transitions. [2022-11-26 00:35:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:35:42,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-26 00:35:42,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:42,860 INFO L225 Difference]: With dead ends: 1642 [2022-11-26 00:35:42,860 INFO L226 Difference]: Without dead ends: 849 [2022-11-26 00:35:42,867 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:35:42,871 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 4340 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4340 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:42,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4340 Valid, 1022 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-26 00:35:42,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-26 00:35:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2022-11-26 00:35:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 827 states have (on average 1.2962515114873034) internal successors, (1072), 848 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1072 transitions. [2022-11-26 00:35:42,973 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1072 transitions. Word has length 85 [2022-11-26 00:35:42,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:42,973 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1072 transitions. [2022-11-26 00:35:42,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1072 transitions. [2022-11-26 00:35:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-26 00:35:42,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:42,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:42,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:35:42,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:35:42,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash -32531416, now seen corresponding path program 1 times [2022-11-26 00:35:42,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:42,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659003757] [2022-11-26 00:35:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:42,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:43,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:43,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659003757] [2022-11-26 00:35:43,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659003757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:43,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:43,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:35:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873055923] [2022-11-26 00:35:43,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:43,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:35:43,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:43,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:35:43,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:35:43,351 INFO L87 Difference]: Start difference. First operand 849 states and 1072 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:44,487 INFO L93 Difference]: Finished difference Result 1390 states and 1805 transitions. [2022-11-26 00:35:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:35:44,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-26 00:35:44,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:44,492 INFO L225 Difference]: With dead ends: 1390 [2022-11-26 00:35:44,492 INFO L226 Difference]: Without dead ends: 769 [2022-11-26 00:35:44,494 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:35:44,495 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 2791 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2791 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:44,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2791 Valid, 495 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:35:44,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-11-26 00:35:44,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2022-11-26 00:35:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 747 states have (on average 1.3052208835341366) internal successors, (975), 768 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 975 transitions. [2022-11-26 00:35:44,549 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 975 transitions. Word has length 86 [2022-11-26 00:35:44,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:44,549 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 975 transitions. [2022-11-26 00:35:44,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:44,550 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 975 transitions. [2022-11-26 00:35:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-26 00:35:44,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:44,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:44,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:35:44,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:35:44,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:44,554 INFO L85 PathProgramCache]: Analyzing trace with hash -618823733, now seen corresponding path program 1 times [2022-11-26 00:35:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:44,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794684936] [2022-11-26 00:35:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:44,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:44,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:44,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794684936] [2022-11-26 00:35:44,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794684936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:44,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:44,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:35:44,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538956719] [2022-11-26 00:35:44,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:44,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:35:44,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:44,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:35:44,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:35:44,827 INFO L87 Difference]: Start difference. First operand 769 states and 975 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:45,604 INFO L93 Difference]: Finished difference Result 1310 states and 1707 transitions. [2022-11-26 00:35:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:35:45,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-11-26 00:35:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:45,614 INFO L225 Difference]: With dead ends: 1310 [2022-11-26 00:35:45,614 INFO L226 Difference]: Without dead ends: 693 [2022-11-26 00:35:45,617 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:35:45,625 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 2580 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:45,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2580 Valid, 501 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:35:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-26 00:35:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2022-11-26 00:35:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 671 states have (on average 1.3263785394932937) internal successors, (890), 692 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 890 transitions. [2022-11-26 00:35:45,740 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 890 transitions. Word has length 87 [2022-11-26 00:35:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:45,741 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 890 transitions. [2022-11-26 00:35:45,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:45,741 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 890 transitions. [2022-11-26 00:35:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-26 00:35:45,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:45,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:45,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:35:45,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:35:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:45,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1705713825, now seen corresponding path program 1 times [2022-11-26 00:35:45,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:45,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300890315] [2022-11-26 00:35:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:45,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:45,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:45,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300890315] [2022-11-26 00:35:45,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300890315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:45,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:45,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:35:45,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425224159] [2022-11-26 00:35:45,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:45,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:35:45,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:45,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:35:45,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:35:45,924 INFO L87 Difference]: Start difference. First operand 693 states and 890 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:46,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:46,629 INFO L93 Difference]: Finished difference Result 1234 states and 1621 transitions. [2022-11-26 00:35:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:35:46,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-26 00:35:46,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:46,633 INFO L225 Difference]: With dead ends: 1234 [2022-11-26 00:35:46,633 INFO L226 Difference]: Without dead ends: 643 [2022-11-26 00:35:46,635 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:35:46,642 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 2442 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2442 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:46,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2442 Valid, 473 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:35:46,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-11-26 00:35:46,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2022-11-26 00:35:46,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 621 states have (on average 1.3446054750402576) internal successors, (835), 642 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:46,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 835 transitions. [2022-11-26 00:35:46,705 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 835 transitions. Word has length 88 [2022-11-26 00:35:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:46,706 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 835 transitions. [2022-11-26 00:35:46,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:46,708 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 835 transitions. [2022-11-26 00:35:46,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-26 00:35:46,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:46,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:46,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:35:46,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:35:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1981491776, now seen corresponding path program 1 times [2022-11-26 00:35:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:46,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970144155] [2022-11-26 00:35:46,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:46,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:46,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:46,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970144155] [2022-11-26 00:35:46,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970144155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:46,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:46,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:35:46,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032838776] [2022-11-26 00:35:46,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:46,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:35:46,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:46,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:35:46,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:35:46,952 INFO L87 Difference]: Start difference. First operand 643 states and 835 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:48,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:48,083 INFO L93 Difference]: Finished difference Result 1507 states and 1989 transitions. [2022-11-26 00:35:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:35:48,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-26 00:35:48,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:48,088 INFO L225 Difference]: With dead ends: 1507 [2022-11-26 00:35:48,089 INFO L226 Difference]: Without dead ends: 938 [2022-11-26 00:35:48,090 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:35:48,091 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 3123 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3123 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:48,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3123 Valid, 705 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:35:48,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-11-26 00:35:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 858. [2022-11-26 00:35:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 836 states have (on average 1.388755980861244) internal successors, (1161), 857 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1161 transitions. [2022-11-26 00:35:48,177 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1161 transitions. Word has length 89 [2022-11-26 00:35:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:48,178 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1161 transitions. [2022-11-26 00:35:48,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1161 transitions. [2022-11-26 00:35:48,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-26 00:35:48,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:48,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:48,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:35:48,182 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:35:48,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash -887858356, now seen corresponding path program 1 times [2022-11-26 00:35:48,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:48,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342886387] [2022-11-26 00:35:48,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:48,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:48,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:48,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342886387] [2022-11-26 00:35:48,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342886387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:48,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:48,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:35:48,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76227814] [2022-11-26 00:35:48,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:48,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:35:48,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:48,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:35:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:35:48,382 INFO L87 Difference]: Start difference. First operand 858 states and 1161 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:49,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:49,149 INFO L93 Difference]: Finished difference Result 1642 states and 2247 transitions. [2022-11-26 00:35:49,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:35:49,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-11-26 00:35:49,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:49,155 INFO L225 Difference]: With dead ends: 1642 [2022-11-26 00:35:49,155 INFO L226 Difference]: Without dead ends: 850 [2022-11-26 00:35:49,156 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:35:49,160 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 2274 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:49,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 433 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:35:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-11-26 00:35:49,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2022-11-26 00:35:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3888888888888888) internal successors, (1150), 849 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1150 transitions. [2022-11-26 00:35:49,247 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1150 transitions. Word has length 90 [2022-11-26 00:35:49,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:49,248 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1150 transitions. [2022-11-26 00:35:49,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:49,249 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1150 transitions. [2022-11-26 00:35:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-26 00:35:49,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:49,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:49,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:35:49,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:35:49,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:49,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1395319451, now seen corresponding path program 1 times [2022-11-26 00:35:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:49,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81161181] [2022-11-26 00:35:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:49,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:49,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81161181] [2022-11-26 00:35:49,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81161181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:49,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:49,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:35:49,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466800388] [2022-11-26 00:35:49,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:49,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:35:49,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:49,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:35:49,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:35:49,830 INFO L87 Difference]: Start difference. First operand 850 states and 1150 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:51,837 INFO L93 Difference]: Finished difference Result 1623 states and 2176 transitions. [2022-11-26 00:35:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:35:51,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-26 00:35:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:51,843 INFO L225 Difference]: With dead ends: 1623 [2022-11-26 00:35:51,844 INFO L226 Difference]: Without dead ends: 1500 [2022-11-26 00:35:51,847 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:35:51,848 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 2308 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:51,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2308 Valid, 1998 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:35:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-26 00:35:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-26 00:35:51,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3876811594202898) internal successors, (1149), 849 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:51,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1149 transitions. [2022-11-26 00:35:51,961 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1149 transitions. Word has length 91 [2022-11-26 00:35:51,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:51,963 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1149 transitions. [2022-11-26 00:35:51,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:51,963 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1149 transitions. [2022-11-26 00:35:51,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-26 00:35:51,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:51,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:51,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:35:51,967 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:35:51,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash 897316485, now seen corresponding path program 1 times [2022-11-26 00:35:51,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:51,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933598875] [2022-11-26 00:35:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:52,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:52,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933598875] [2022-11-26 00:35:52,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933598875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:52,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:52,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:35:52,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971840838] [2022-11-26 00:35:52,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:35:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:35:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:35:52,572 INFO L87 Difference]: Start difference. First operand 850 states and 1149 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:55,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:55,152 INFO L93 Difference]: Finished difference Result 1726 states and 2298 transitions. [2022-11-26 00:35:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-26 00:35:55,152 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-26 00:35:55,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:55,159 INFO L225 Difference]: With dead ends: 1726 [2022-11-26 00:35:55,159 INFO L226 Difference]: Without dead ends: 1594 [2022-11-26 00:35:55,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-11-26 00:35:55,161 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 2452 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:55,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2452 Valid, 3209 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-26 00:35:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-26 00:35:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 859. [2022-11-26 00:35:55,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 837 states have (on average 1.3870967741935485) internal successors, (1161), 858 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1161 transitions. [2022-11-26 00:35:55,274 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1161 transitions. Word has length 91 [2022-11-26 00:35:55,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:55,275 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1161 transitions. [2022-11-26 00:35:55,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1161 transitions. [2022-11-26 00:35:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-26 00:35:55,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:55,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:55,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:35:55,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:35:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:55,279 INFO L85 PathProgramCache]: Analyzing trace with hash 488471257, now seen corresponding path program 1 times [2022-11-26 00:35:55,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:55,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944512109] [2022-11-26 00:35:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:55,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:55,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:55,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944512109] [2022-11-26 00:35:55,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944512109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:55,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:55,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:35:55,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179889878] [2022-11-26 00:35:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:55,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:35:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:35:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:35:55,784 INFO L87 Difference]: Start difference. First operand 859 states and 1161 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:57,927 INFO L93 Difference]: Finished difference Result 1491 states and 1992 transitions. [2022-11-26 00:35:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:35:57,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-26 00:35:57,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:57,933 INFO L225 Difference]: With dead ends: 1491 [2022-11-26 00:35:57,933 INFO L226 Difference]: Without dead ends: 1279 [2022-11-26 00:35:57,935 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:35:57,936 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 2027 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:57,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2027 Valid, 2529 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-26 00:35:57,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-11-26 00:35:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 850. [2022-11-26 00:35:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3864734299516908) internal successors, (1148), 849 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1148 transitions. [2022-11-26 00:35:58,103 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1148 transitions. Word has length 91 [2022-11-26 00:35:58,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:58,103 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1148 transitions. [2022-11-26 00:35:58,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1148 transitions. [2022-11-26 00:35:58,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-26 00:35:58,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:58,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:58,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:35:58,108 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:35:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash -977341548, now seen corresponding path program 1 times [2022-11-26 00:35:58,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:58,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459434901] [2022-11-26 00:35:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:58,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:58,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:58,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459434901] [2022-11-26 00:35:58,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459434901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:58,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:58,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:35:58,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668513182] [2022-11-26 00:35:58,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:58,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:35:58,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:58,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:35:58,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:35:58,624 INFO L87 Difference]: Start difference. First operand 850 states and 1148 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:00,549 INFO L93 Difference]: Finished difference Result 1646 states and 2207 transitions. [2022-11-26 00:36:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:36:00,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-26 00:36:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:00,555 INFO L225 Difference]: With dead ends: 1646 [2022-11-26 00:36:00,556 INFO L226 Difference]: Without dead ends: 1492 [2022-11-26 00:36:00,557 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:00,557 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 3527 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:00,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 2727 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:36:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-11-26 00:36:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 850. [2022-11-26 00:36:00,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3840579710144927) internal successors, (1146), 849 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1146 transitions. [2022-11-26 00:36:00,692 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1146 transitions. Word has length 91 [2022-11-26 00:36:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:00,693 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1146 transitions. [2022-11-26 00:36:00,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1146 transitions. [2022-11-26 00:36:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-26 00:36:00,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:00,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:00,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:36:00,696 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:00,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1386186776, now seen corresponding path program 1 times [2022-11-26 00:36:00,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:00,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478563041] [2022-11-26 00:36:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:00,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:01,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:01,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478563041] [2022-11-26 00:36:01,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478563041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:01,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:01,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:36:01,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133316229] [2022-11-26 00:36:01,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:01,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:36:01,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:01,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:36:01,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:36:01,087 INFO L87 Difference]: Start difference. First operand 850 states and 1146 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:02,395 INFO L93 Difference]: Finished difference Result 1496 states and 1933 transitions. [2022-11-26 00:36:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:36:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-26 00:36:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:02,400 INFO L225 Difference]: With dead ends: 1496 [2022-11-26 00:36:02,401 INFO L226 Difference]: Without dead ends: 1126 [2022-11-26 00:36:02,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:36:02,403 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 3498 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:02,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3498 Valid, 944 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:36:02,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-11-26 00:36:02,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 850. [2022-11-26 00:36:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3828502415458936) internal successors, (1145), 849 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1145 transitions. [2022-11-26 00:36:02,555 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1145 transitions. Word has length 91 [2022-11-26 00:36:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:02,555 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1145 transitions. [2022-11-26 00:36:02,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1145 transitions. [2022-11-26 00:36:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-26 00:36:02,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:02,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:02,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:36:02,559 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:02,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:02,560 INFO L85 PathProgramCache]: Analyzing trace with hash 212783759, now seen corresponding path program 1 times [2022-11-26 00:36:02,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:02,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474937027] [2022-11-26 00:36:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:02,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:02,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:02,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474937027] [2022-11-26 00:36:02,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474937027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:02,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:02,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:02,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355853363] [2022-11-26 00:36:02,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:02,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:02,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:02,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:02,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:02,984 INFO L87 Difference]: Start difference. First operand 850 states and 1145 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:04,568 INFO L93 Difference]: Finished difference Result 1308 states and 1756 transitions. [2022-11-26 00:36:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:36:04,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-26 00:36:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:04,573 INFO L225 Difference]: With dead ends: 1308 [2022-11-26 00:36:04,573 INFO L226 Difference]: Without dead ends: 956 [2022-11-26 00:36:04,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:36:04,575 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1318 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:04,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 2159 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-26 00:36:04,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-11-26 00:36:04,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 850. [2022-11-26 00:36:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3804347826086956) internal successors, (1143), 849 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1143 transitions. [2022-11-26 00:36:04,760 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1143 transitions. Word has length 93 [2022-11-26 00:36:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:04,761 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1143 transitions. [2022-11-26 00:36:04,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1143 transitions. [2022-11-26 00:36:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-26 00:36:04,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:04,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:04,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:36:04,764 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash 426483258, now seen corresponding path program 1 times [2022-11-26 00:36:04,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:04,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771322147] [2022-11-26 00:36:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:04,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:05,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:05,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771322147] [2022-11-26 00:36:05,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771322147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:05,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:05,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:05,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788886404] [2022-11-26 00:36:05,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:05,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:05,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:05,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:05,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:05,124 INFO L87 Difference]: Start difference. First operand 850 states and 1143 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:06,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:06,975 INFO L93 Difference]: Finished difference Result 1642 states and 2196 transitions. [2022-11-26 00:36:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:06,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-26 00:36:06,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:06,982 INFO L225 Difference]: With dead ends: 1642 [2022-11-26 00:36:06,983 INFO L226 Difference]: Without dead ends: 1500 [2022-11-26 00:36:06,984 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:06,984 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 2189 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:06,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 2049 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-26 00:36:06,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-26 00:36:07,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-26 00:36:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3780193236714975) internal successors, (1141), 849 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1141 transitions. [2022-11-26 00:36:07,136 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1141 transitions. Word has length 93 [2022-11-26 00:36:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:07,137 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1141 transitions. [2022-11-26 00:36:07,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1141 transitions. [2022-11-26 00:36:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-26 00:36:07,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:07,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:07,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:36:07,141 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:07,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:07,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1453025680, now seen corresponding path program 1 times [2022-11-26 00:36:07,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:07,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957280580] [2022-11-26 00:36:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:07,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:07,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:07,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957280580] [2022-11-26 00:36:07,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957280580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:07,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:07,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:07,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078065856] [2022-11-26 00:36:07,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:07,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:07,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:07,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:07,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:07,484 INFO L87 Difference]: Start difference. First operand 850 states and 1141 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:09,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:09,455 INFO L93 Difference]: Finished difference Result 1642 states and 2189 transitions. [2022-11-26 00:36:09,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:09,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-26 00:36:09,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:09,462 INFO L225 Difference]: With dead ends: 1642 [2022-11-26 00:36:09,462 INFO L226 Difference]: Without dead ends: 1500 [2022-11-26 00:36:09,463 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:09,464 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 2274 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:09,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 2037 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-26 00:36:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-26 00:36:09,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-26 00:36:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3756038647342994) internal successors, (1139), 849 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1139 transitions. [2022-11-26 00:36:09,616 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1139 transitions. Word has length 93 [2022-11-26 00:36:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:09,617 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1139 transitions. [2022-11-26 00:36:09,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:09,617 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1139 transitions. [2022-11-26 00:36:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-26 00:36:09,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:09,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:09,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:36:09,621 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:09,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:09,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1861870908, now seen corresponding path program 1 times [2022-11-26 00:36:09,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:09,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845905254] [2022-11-26 00:36:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:09,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:09,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:09,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845905254] [2022-11-26 00:36:09,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845905254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:09,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:09,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:09,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643059665] [2022-11-26 00:36:09,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:09,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:09,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:09,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:09,973 INFO L87 Difference]: Start difference. First operand 850 states and 1139 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:12,009 INFO L93 Difference]: Finished difference Result 1719 states and 2300 transitions. [2022-11-26 00:36:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:12,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-26 00:36:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:12,015 INFO L225 Difference]: With dead ends: 1719 [2022-11-26 00:36:12,015 INFO L226 Difference]: Without dead ends: 1523 [2022-11-26 00:36:12,017 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:12,018 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 2672 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:12,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 2877 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-26 00:36:12,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-26 00:36:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 850. [2022-11-26 00:36:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3731884057971016) internal successors, (1137), 849 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1137 transitions. [2022-11-26 00:36:12,235 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1137 transitions. Word has length 93 [2022-11-26 00:36:12,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:12,236 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1137 transitions. [2022-11-26 00:36:12,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1137 transitions. [2022-11-26 00:36:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-26 00:36:12,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:12,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:12,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 00:36:12,239 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:12,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1321108389, now seen corresponding path program 1 times [2022-11-26 00:36:12,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:12,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863035998] [2022-11-26 00:36:12,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:12,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:12,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:12,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863035998] [2022-11-26 00:36:12,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863035998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:12,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:12,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:12,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936052476] [2022-11-26 00:36:12,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:12,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:12,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:12,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:12,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:12,593 INFO L87 Difference]: Start difference. First operand 850 states and 1137 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:14,419 INFO L93 Difference]: Finished difference Result 1632 states and 2169 transitions. [2022-11-26 00:36:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:14,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-26 00:36:14,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:14,425 INFO L225 Difference]: With dead ends: 1632 [2022-11-26 00:36:14,425 INFO L226 Difference]: Without dead ends: 1500 [2022-11-26 00:36:14,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:36:14,427 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 3465 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:14,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 2101 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:36:14,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-26 00:36:14,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-26 00:36:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3719806763285025) internal successors, (1136), 849 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:14,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1136 transitions. [2022-11-26 00:36:14,590 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1136 transitions. Word has length 93 [2022-11-26 00:36:14,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:14,591 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1136 transitions. [2022-11-26 00:36:14,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1136 transitions. [2022-11-26 00:36:14,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-26 00:36:14,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:14,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:14,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 00:36:14,594 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:14,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:14,595 INFO L85 PathProgramCache]: Analyzing trace with hash 912263161, now seen corresponding path program 1 times [2022-11-26 00:36:14,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:14,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882273177] [2022-11-26 00:36:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:14,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:14,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:14,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:14,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882273177] [2022-11-26 00:36:14,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882273177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:14,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:14,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:14,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699281079] [2022-11-26 00:36:14,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:14,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:14,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:14,929 INFO L87 Difference]: Start difference. First operand 850 states and 1136 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:17,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:17,017 INFO L93 Difference]: Finished difference Result 1685 states and 2248 transitions. [2022-11-26 00:36:17,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:17,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-26 00:36:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:17,022 INFO L225 Difference]: With dead ends: 1685 [2022-11-26 00:36:17,022 INFO L226 Difference]: Without dead ends: 1523 [2022-11-26 00:36:17,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:36:17,024 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 2797 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2797 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:17,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2797 Valid, 2734 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-26 00:36:17,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-26 00:36:17,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 850. [2022-11-26 00:36:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3707729468599035) internal successors, (1135), 849 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:17,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1135 transitions. [2022-11-26 00:36:17,171 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1135 transitions. Word has length 93 [2022-11-26 00:36:17,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:17,172 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1135 transitions. [2022-11-26 00:36:17,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1135 transitions. [2022-11-26 00:36:17,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-26 00:36:17,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:17,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:17,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 00:36:17,176 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:17,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1094349969, now seen corresponding path program 1 times [2022-11-26 00:36:17,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:17,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96443451] [2022-11-26 00:36:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:17,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:17,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:17,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96443451] [2022-11-26 00:36:17,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96443451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:17,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:17,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:17,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891320949] [2022-11-26 00:36:17,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:17,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:17,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:17,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:17,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:17,538 INFO L87 Difference]: Start difference. First operand 850 states and 1135 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:19,608 INFO L93 Difference]: Finished difference Result 1623 states and 2158 transitions. [2022-11-26 00:36:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:19,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-26 00:36:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:19,612 INFO L225 Difference]: With dead ends: 1623 [2022-11-26 00:36:19,612 INFO L226 Difference]: Without dead ends: 1500 [2022-11-26 00:36:19,613 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:19,614 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 2002 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2002 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:19,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2002 Valid, 2428 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-26 00:36:19,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-26 00:36:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-26 00:36:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3695652173913044) internal successors, (1134), 849 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1134 transitions. [2022-11-26 00:36:19,795 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1134 transitions. Word has length 93 [2022-11-26 00:36:19,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:19,796 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1134 transitions. [2022-11-26 00:36:19,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1134 transitions. [2022-11-26 00:36:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-26 00:36:19,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:19,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:19,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-26 00:36:19,799 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:19,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:19,800 INFO L85 PathProgramCache]: Analyzing trace with hash -742152744, now seen corresponding path program 1 times [2022-11-26 00:36:19,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:19,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201547822] [2022-11-26 00:36:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:19,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:20,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:20,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201547822] [2022-11-26 00:36:20,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201547822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:20,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:20,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:20,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693318176] [2022-11-26 00:36:20,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:20,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:20,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:20,158 INFO L87 Difference]: Start difference. First operand 850 states and 1134 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:22,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:22,457 INFO L93 Difference]: Finished difference Result 1671 states and 2230 transitions. [2022-11-26 00:36:22,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:36:22,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-26 00:36:22,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:22,463 INFO L225 Difference]: With dead ends: 1671 [2022-11-26 00:36:22,463 INFO L226 Difference]: Without dead ends: 1523 [2022-11-26 00:36:22,465 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:22,465 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 2797 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2797 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 2384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:22,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2797 Valid, 3368 Invalid, 2384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 00:36:22,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-26 00:36:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 850. [2022-11-26 00:36:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3683574879227054) internal successors, (1133), 849 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1133 transitions. [2022-11-26 00:36:22,704 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1133 transitions. Word has length 93 [2022-11-26 00:36:22,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:22,705 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1133 transitions. [2022-11-26 00:36:22,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:22,705 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1133 transitions. [2022-11-26 00:36:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-26 00:36:22,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:22,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:22,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-26 00:36:22,708 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:22,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:22,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1210703433, now seen corresponding path program 1 times [2022-11-26 00:36:22,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:22,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967239270] [2022-11-26 00:36:22,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:22,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:23,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:23,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967239270] [2022-11-26 00:36:23,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967239270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:23,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:23,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:23,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60805759] [2022-11-26 00:36:23,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:23,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:23,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:23,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:23,070 INFO L87 Difference]: Start difference. First operand 850 states and 1133 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:25,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:25,246 INFO L93 Difference]: Finished difference Result 1618 states and 2151 transitions. [2022-11-26 00:36:25,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:25,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-26 00:36:25,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:25,251 INFO L225 Difference]: With dead ends: 1618 [2022-11-26 00:36:25,252 INFO L226 Difference]: Without dead ends: 1500 [2022-11-26 00:36:25,252 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:25,253 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 2860 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2860 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:25,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2860 Valid, 2552 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-26 00:36:25,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-26 00:36:25,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-26 00:36:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3671497584541064) internal successors, (1132), 849 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1132 transitions. [2022-11-26 00:36:25,421 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1132 transitions. Word has length 93 [2022-11-26 00:36:25,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:25,421 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1132 transitions. [2022-11-26 00:36:25,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1132 transitions. [2022-11-26 00:36:25,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:25,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:25,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:25,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-26 00:36:25,424 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:25,425 INFO L85 PathProgramCache]: Analyzing trace with hash 428439914, now seen corresponding path program 1 times [2022-11-26 00:36:25,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:25,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184047789] [2022-11-26 00:36:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:25,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:25,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:25,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184047789] [2022-11-26 00:36:25,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184047789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:25,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:25,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:25,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753726676] [2022-11-26 00:36:25,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:25,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:25,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:25,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:25,794 INFO L87 Difference]: Start difference. First operand 850 states and 1132 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:28,175 INFO L93 Difference]: Finished difference Result 1596 states and 2112 transitions. [2022-11-26 00:36:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:36:28,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:36:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:28,181 INFO L225 Difference]: With dead ends: 1596 [2022-11-26 00:36:28,182 INFO L226 Difference]: Without dead ends: 1476 [2022-11-26 00:36:28,183 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:28,184 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 2565 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2565 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:28,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2565 Valid, 3163 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 00:36:28,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-26 00:36:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-26 00:36:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3647342995169083) internal successors, (1130), 849 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:28,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1130 transitions. [2022-11-26 00:36:28,369 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1130 transitions. Word has length 95 [2022-11-26 00:36:28,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:28,370 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1130 transitions. [2022-11-26 00:36:28,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1130 transitions. [2022-11-26 00:36:28,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:28,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:28,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:28,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-26 00:36:28,373 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:28,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:28,374 INFO L85 PathProgramCache]: Analyzing trace with hash -403449268, now seen corresponding path program 1 times [2022-11-26 00:36:28,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:28,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105101224] [2022-11-26 00:36:28,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:28,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:28,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:28,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105101224] [2022-11-26 00:36:28,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105101224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:28,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:28,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:28,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224456290] [2022-11-26 00:36:28,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:28,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:28,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:28,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:28,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:28,705 INFO L87 Difference]: Start difference. First operand 850 states and 1130 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:30,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:30,782 INFO L93 Difference]: Finished difference Result 1662 states and 2200 transitions. [2022-11-26 00:36:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:30,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:36:30,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:30,792 INFO L225 Difference]: With dead ends: 1662 [2022-11-26 00:36:30,792 INFO L226 Difference]: Without dead ends: 1500 [2022-11-26 00:36:30,793 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:30,794 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 3103 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3103 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:30,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3103 Valid, 2464 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-26 00:36:30,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-26 00:36:30,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-26 00:36:30,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3623188405797102) internal successors, (1128), 849 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:30,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1128 transitions. [2022-11-26 00:36:30,981 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1128 transitions. Word has length 95 [2022-11-26 00:36:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:30,982 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1128 transitions. [2022-11-26 00:36:30,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:30,982 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1128 transitions. [2022-11-26 00:36:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:30,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:30,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:30,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-26 00:36:30,985 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:30,986 INFO L85 PathProgramCache]: Analyzing trace with hash 13593460, now seen corresponding path program 1 times [2022-11-26 00:36:30,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:30,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759801803] [2022-11-26 00:36:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:30,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:31,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:31,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759801803] [2022-11-26 00:36:31,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759801803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:31,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:31,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:31,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84996825] [2022-11-26 00:36:31,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:31,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:31,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:31,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:31,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:31,319 INFO L87 Difference]: Start difference. First operand 850 states and 1128 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:33,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:33,537 INFO L93 Difference]: Finished difference Result 1751 states and 2321 transitions. [2022-11-26 00:36:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:33,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:36:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:33,541 INFO L225 Difference]: With dead ends: 1751 [2022-11-26 00:36:33,541 INFO L226 Difference]: Without dead ends: 1523 [2022-11-26 00:36:33,543 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:33,543 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 2683 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:33,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2683 Valid, 2750 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-26 00:36:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-26 00:36:33,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 850. [2022-11-26 00:36:33,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3599033816425121) internal successors, (1126), 849 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:33,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1126 transitions. [2022-11-26 00:36:33,736 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1126 transitions. Word has length 95 [2022-11-26 00:36:33,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:33,736 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1126 transitions. [2022-11-26 00:36:33,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:33,736 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1126 transitions. [2022-11-26 00:36:33,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:33,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:33,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:33,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-26 00:36:33,738 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:33,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:33,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1322444417, now seen corresponding path program 1 times [2022-11-26 00:36:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:33,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854744048] [2022-11-26 00:36:33,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:33,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:34,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:34,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854744048] [2022-11-26 00:36:34,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854744048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:34,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:34,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:34,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185259253] [2022-11-26 00:36:34,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:34,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:34,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:34,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:34,048 INFO L87 Difference]: Start difference. First operand 850 states and 1126 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:36,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:36,422 INFO L93 Difference]: Finished difference Result 1592 states and 2100 transitions. [2022-11-26 00:36:36,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:36,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:36:36,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:36,427 INFO L225 Difference]: With dead ends: 1592 [2022-11-26 00:36:36,427 INFO L226 Difference]: Without dead ends: 1476 [2022-11-26 00:36:36,428 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:36,429 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 2617 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:36,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2617 Valid, 2735 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-26 00:36:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-26 00:36:36,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-26 00:36:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.357487922705314) internal successors, (1124), 849 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:36,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1124 transitions. [2022-11-26 00:36:36,620 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1124 transitions. Word has length 95 [2022-11-26 00:36:36,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:36,620 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1124 transitions. [2022-11-26 00:36:36,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1124 transitions. [2022-11-26 00:36:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:36,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:36,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:36,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-26 00:36:36,622 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:36,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:36,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1959236716, now seen corresponding path program 1 times [2022-11-26 00:36:36,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:36,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298853639] [2022-11-26 00:36:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:36,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:37,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:37,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298853639] [2022-11-26 00:36:37,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298853639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:37,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:37,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:37,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918743668] [2022-11-26 00:36:37,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:37,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:37,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:37,009 INFO L87 Difference]: Start difference. First operand 850 states and 1124 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:39,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:39,496 INFO L93 Difference]: Finished difference Result 1590 states and 2095 transitions. [2022-11-26 00:36:39,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:36:39,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:36:39,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:39,499 INFO L225 Difference]: With dead ends: 1590 [2022-11-26 00:36:39,499 INFO L226 Difference]: Without dead ends: 1476 [2022-11-26 00:36:39,500 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:39,501 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 2546 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 3305 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:39,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2546 Valid, 3305 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:36:39,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-26 00:36:39,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-26 00:36:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.355072463768116) internal successors, (1122), 849 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1122 transitions. [2022-11-26 00:36:39,723 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1122 transitions. Word has length 95 [2022-11-26 00:36:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:39,723 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1122 transitions. [2022-11-26 00:36:39,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:39,724 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1122 transitions. [2022-11-26 00:36:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:39,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:39,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:39,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-26 00:36:39,726 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:39,727 INFO L85 PathProgramCache]: Analyzing trace with hash 954342242, now seen corresponding path program 1 times [2022-11-26 00:36:39,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:39,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837270017] [2022-11-26 00:36:39,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:39,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:40,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:40,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837270017] [2022-11-26 00:36:40,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837270017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:40,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:40,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:40,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128415457] [2022-11-26 00:36:40,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:40,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:40,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:40,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:40,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:40,079 INFO L87 Difference]: Start difference. First operand 850 states and 1122 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:42,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:42,685 INFO L93 Difference]: Finished difference Result 1592 states and 2094 transitions. [2022-11-26 00:36:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:36:42,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:36:42,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:42,688 INFO L225 Difference]: With dead ends: 1592 [2022-11-26 00:36:42,689 INFO L226 Difference]: Without dead ends: 1476 [2022-11-26 00:36:42,690 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:42,690 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 2545 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:42,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 3303 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 00:36:42,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-26 00:36:42,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-26 00:36:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3526570048309179) internal successors, (1120), 849 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1120 transitions. [2022-11-26 00:36:42,971 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1120 transitions. Word has length 95 [2022-11-26 00:36:42,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:42,972 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1120 transitions. [2022-11-26 00:36:42,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:42,972 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1120 transitions. [2022-11-26 00:36:42,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:42,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:42,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:42,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-26 00:36:42,974 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:42,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:42,975 INFO L85 PathProgramCache]: Analyzing trace with hash -277492777, now seen corresponding path program 1 times [2022-11-26 00:36:42,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:42,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846983277] [2022-11-26 00:36:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:42,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:43,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:43,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846983277] [2022-11-26 00:36:43,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846983277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:43,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:43,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:43,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862682737] [2022-11-26 00:36:43,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:43,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:43,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:43,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:43,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:43,329 INFO L87 Difference]: Start difference. First operand 850 states and 1120 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:45,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:45,984 INFO L93 Difference]: Finished difference Result 1586 states and 2084 transitions. [2022-11-26 00:36:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:36:45,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:36:45,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:45,987 INFO L225 Difference]: With dead ends: 1586 [2022-11-26 00:36:45,987 INFO L226 Difference]: Without dead ends: 1476 [2022-11-26 00:36:45,988 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:45,988 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 2542 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:45,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2542 Valid, 3371 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 00:36:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-26 00:36:46,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-26 00:36:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3514492753623188) internal successors, (1119), 849 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:46,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1119 transitions. [2022-11-26 00:36:46,209 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1119 transitions. Word has length 95 [2022-11-26 00:36:46,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:46,209 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1119 transitions. [2022-11-26 00:36:46,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1119 transitions. [2022-11-26 00:36:46,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:46,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:46,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:46,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-26 00:36:46,211 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:46,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:46,211 INFO L85 PathProgramCache]: Analyzing trace with hash 90609398, now seen corresponding path program 1 times [2022-11-26 00:36:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:46,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760414255] [2022-11-26 00:36:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:46,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:46,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:46,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760414255] [2022-11-26 00:36:46,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760414255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:46,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:46,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:46,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87477796] [2022-11-26 00:36:46,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:46,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:46,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:46,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:46,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:46,514 INFO L87 Difference]: Start difference. First operand 850 states and 1119 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:48,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:48,971 INFO L93 Difference]: Finished difference Result 1586 states and 2083 transitions. [2022-11-26 00:36:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:48,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:36:48,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:48,974 INFO L225 Difference]: With dead ends: 1586 [2022-11-26 00:36:48,974 INFO L226 Difference]: Without dead ends: 1476 [2022-11-26 00:36:48,975 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:48,976 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 2606 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2606 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:48,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2606 Valid, 2731 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-26 00:36:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-26 00:36:49,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-26 00:36:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3502415458937198) internal successors, (1118), 849 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1118 transitions. [2022-11-26 00:36:49,202 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1118 transitions. Word has length 95 [2022-11-26 00:36:49,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:49,203 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1118 transitions. [2022-11-26 00:36:49,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1118 transitions. [2022-11-26 00:36:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:49,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:49,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:49,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-26 00:36:49,205 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:49,206 INFO L85 PathProgramCache]: Analyzing trace with hash 726921085, now seen corresponding path program 1 times [2022-11-26 00:36:49,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:49,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670271149] [2022-11-26 00:36:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:49,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:49,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:49,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670271149] [2022-11-26 00:36:49,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670271149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:49,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:49,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446041185] [2022-11-26 00:36:49,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:49,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:49,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:49,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:49,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:49,510 INFO L87 Difference]: Start difference. First operand 850 states and 1118 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:51,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:51,839 INFO L93 Difference]: Finished difference Result 1582 states and 2077 transitions. [2022-11-26 00:36:51,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:36:51,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:36:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:51,842 INFO L225 Difference]: With dead ends: 1582 [2022-11-26 00:36:51,842 INFO L226 Difference]: Without dead ends: 1476 [2022-11-26 00:36:51,842 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:51,843 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 2525 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:51,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 3309 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-26 00:36:51,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-26 00:36:52,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-26 00:36:52,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3490338164251208) internal successors, (1117), 849 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1117 transitions. [2022-11-26 00:36:52,042 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1117 transitions. Word has length 95 [2022-11-26 00:36:52,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:52,042 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1117 transitions. [2022-11-26 00:36:52,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1117 transitions. [2022-11-26 00:36:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:52,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:52,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:52,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-26 00:36:52,044 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:52,044 INFO L85 PathProgramCache]: Analyzing trace with hash -733177260, now seen corresponding path program 1 times [2022-11-26 00:36:52,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:52,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342429781] [2022-11-26 00:36:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:52,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:52,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:52,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342429781] [2022-11-26 00:36:52,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342429781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:52,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:52,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:52,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606084476] [2022-11-26 00:36:52,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:52,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:52,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:52,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:52,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:52,348 INFO L87 Difference]: Start difference. First operand 850 states and 1117 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:54,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:54,755 INFO L93 Difference]: Finished difference Result 1582 states and 2076 transitions. [2022-11-26 00:36:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:36:54,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:36:54,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:54,758 INFO L225 Difference]: With dead ends: 1582 [2022-11-26 00:36:54,758 INFO L226 Difference]: Without dead ends: 1476 [2022-11-26 00:36:54,759 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:54,760 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 2529 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 3390 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:54,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2529 Valid, 3390 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-26 00:36:54,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-26 00:36:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-26 00:36:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3478260869565217) internal successors, (1116), 849 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:54,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1116 transitions. [2022-11-26 00:36:54,960 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1116 transitions. Word has length 95 [2022-11-26 00:36:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:54,960 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1116 transitions. [2022-11-26 00:36:54,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1116 transitions. [2022-11-26 00:36:54,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:54,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:54,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:54,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-26 00:36:54,962 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1369271480, now seen corresponding path program 1 times [2022-11-26 00:36:54,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:54,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792030333] [2022-11-26 00:36:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:54,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:55,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:55,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792030333] [2022-11-26 00:36:55,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792030333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:55,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:55,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:55,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447433990] [2022-11-26 00:36:55,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:55,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:55,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:55,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:55,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:55,218 INFO L87 Difference]: Start difference. First operand 850 states and 1116 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:57,874 INFO L93 Difference]: Finished difference Result 1586 states and 2078 transitions. [2022-11-26 00:36:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:36:57,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:36:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:57,878 INFO L225 Difference]: With dead ends: 1586 [2022-11-26 00:36:57,878 INFO L226 Difference]: Without dead ends: 1476 [2022-11-26 00:36:57,879 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:36:57,880 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 2517 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:57,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2517 Valid, 2805 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:36:57,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-26 00:36:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-26 00:36:58,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3466183574879227) internal successors, (1115), 849 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1115 transitions. [2022-11-26 00:36:58,125 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1115 transitions. Word has length 95 [2022-11-26 00:36:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:58,125 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1115 transitions. [2022-11-26 00:36:58,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:36:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1115 transitions. [2022-11-26 00:36:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:36:58,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:58,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:58,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-26 00:36:58,127 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:36:58,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:58,128 INFO L85 PathProgramCache]: Analyzing trace with hash -532293800, now seen corresponding path program 1 times [2022-11-26 00:36:58,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:58,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117194050] [2022-11-26 00:36:58,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:58,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:58,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:58,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117194050] [2022-11-26 00:36:58,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117194050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:58,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:58,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:36:58,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93226689] [2022-11-26 00:36:58,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:58,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:36:58,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:58,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:36:58,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:58,445 INFO L87 Difference]: Start difference. First operand 850 states and 1115 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:01,151 INFO L93 Difference]: Finished difference Result 1582 states and 2073 transitions. [2022-11-26 00:37:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:37:01,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:37:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:01,154 INFO L225 Difference]: With dead ends: 1582 [2022-11-26 00:37:01,154 INFO L226 Difference]: Without dead ends: 1476 [2022-11-26 00:37:01,155 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:37:01,156 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1795 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:01,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 2731 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:37:01,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-26 00:37:01,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-26 00:37:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3454106280193237) internal successors, (1114), 849 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1114 transitions. [2022-11-26 00:37:01,398 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1114 transitions. Word has length 95 [2022-11-26 00:37:01,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:01,399 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1114 transitions. [2022-11-26 00:37:01,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:01,399 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1114 transitions. [2022-11-26 00:37:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:37:01,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:01,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:01,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-26 00:37:01,401 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:01,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:01,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1192103022, now seen corresponding path program 1 times [2022-11-26 00:37:01,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:01,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637381164] [2022-11-26 00:37:01,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:01,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:01,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:01,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637381164] [2022-11-26 00:37:01,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637381164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:01,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:01,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:37:01,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11597501] [2022-11-26 00:37:01,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:01,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:37:01,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:01,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:37:01,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:37:01,757 INFO L87 Difference]: Start difference. First operand 850 states and 1114 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:04,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:04,504 INFO L93 Difference]: Finished difference Result 1581 states and 2070 transitions. [2022-11-26 00:37:04,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:37:04,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-26 00:37:04,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:04,508 INFO L225 Difference]: With dead ends: 1581 [2022-11-26 00:37:04,508 INFO L226 Difference]: Without dead ends: 1476 [2022-11-26 00:37:04,509 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:37:04,510 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 2705 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:04,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 3174 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:37:04,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-26 00:37:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-26 00:37:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3442028985507246) internal successors, (1113), 849 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1113 transitions. [2022-11-26 00:37:04,911 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1113 transitions. Word has length 95 [2022-11-26 00:37:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:04,912 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1113 transitions. [2022-11-26 00:37:04,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1113 transitions. [2022-11-26 00:37:04,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-26 00:37:04,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:04,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:04,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-26 00:37:04,914 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:04,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:04,914 INFO L85 PathProgramCache]: Analyzing trace with hash 577481844, now seen corresponding path program 1 times [2022-11-26 00:37:04,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:04,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065489767] [2022-11-26 00:37:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:04,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:06,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:06,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065489767] [2022-11-26 00:37:06,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065489767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:06,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:06,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-26 00:37:06,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694339383] [2022-11-26 00:37:06,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:06,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 00:37:06,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:06,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 00:37:06,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:37:06,094 INFO L87 Difference]: Start difference. First operand 850 states and 1113 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:11,192 INFO L93 Difference]: Finished difference Result 2244 states and 2761 transitions. [2022-11-26 00:37:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-26 00:37:11,193 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-11-26 00:37:11,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:11,196 INFO L225 Difference]: With dead ends: 2244 [2022-11-26 00:37:11,196 INFO L226 Difference]: Without dead ends: 1934 [2022-11-26 00:37:11,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2022-11-26 00:37:11,199 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 6075 mSDsluCounter, 4059 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6075 SdHoareTripleChecker+Valid, 4897 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:11,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6075 Valid, 4897 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-26 00:37:11,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2022-11-26 00:37:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 638. [2022-11-26 00:37:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.332797427652733) internal successors, (829), 637 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 829 transitions. [2022-11-26 00:37:11,467 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 829 transitions. Word has length 96 [2022-11-26 00:37:11,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:11,468 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 829 transitions. [2022-11-26 00:37:11,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 829 transitions. [2022-11-26 00:37:11,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:11,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:11,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:11,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-26 00:37:11,469 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:11,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2114920515, now seen corresponding path program 1 times [2022-11-26 00:37:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:11,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694535185] [2022-11-26 00:37:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:11,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:11,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:11,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694535185] [2022-11-26 00:37:11,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694535185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:11,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:11,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:37:11,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271776798] [2022-11-26 00:37:11,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:11,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:37:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:11,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:37:11,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:37:11,863 INFO L87 Difference]: Start difference. First operand 638 states and 829 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:14,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:14,162 INFO L93 Difference]: Finished difference Result 1230 states and 1591 transitions. [2022-11-26 00:37:14,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:37:14,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:14,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:14,165 INFO L225 Difference]: With dead ends: 1230 [2022-11-26 00:37:14,165 INFO L226 Difference]: Without dead ends: 1124 [2022-11-26 00:37:14,166 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:37:14,166 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1649 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:14,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 1727 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 00:37:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-26 00:37:14,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 638. [2022-11-26 00:37:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3295819935691318) internal successors, (827), 637 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 827 transitions. [2022-11-26 00:37:14,437 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 827 transitions. Word has length 97 [2022-11-26 00:37:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:14,438 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 827 transitions. [2022-11-26 00:37:14,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 827 transitions. [2022-11-26 00:37:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:14,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:14,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:14,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-26 00:37:14,440 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash -202723413, now seen corresponding path program 1 times [2022-11-26 00:37:14,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:14,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982623133] [2022-11-26 00:37:14,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:14,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:14,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:14,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982623133] [2022-11-26 00:37:14,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982623133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:14,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:14,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:37:14,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913086969] [2022-11-26 00:37:14,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:14,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:37:14,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:14,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:37:14,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:37:14,797 INFO L87 Difference]: Start difference. First operand 638 states and 827 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:17,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:17,182 INFO L93 Difference]: Finished difference Result 1278 states and 1662 transitions. [2022-11-26 00:37:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:37:17,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:17,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:17,186 INFO L225 Difference]: With dead ends: 1278 [2022-11-26 00:37:17,187 INFO L226 Difference]: Without dead ends: 1156 [2022-11-26 00:37:17,188 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:37:17,188 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1170 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:17,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1744 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 00:37:17,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-11-26 00:37:17,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 638. [2022-11-26 00:37:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3263665594855305) internal successors, (825), 637 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 825 transitions. [2022-11-26 00:37:17,652 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 825 transitions. Word has length 97 [2022-11-26 00:37:17,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:17,653 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 825 transitions. [2022-11-26 00:37:17,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 825 transitions. [2022-11-26 00:37:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:17,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:17,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:17,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-26 00:37:17,656 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:17,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1604074859, now seen corresponding path program 1 times [2022-11-26 00:37:17,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:17,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708070580] [2022-11-26 00:37:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:18,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:18,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708070580] [2022-11-26 00:37:18,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708070580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:18,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:18,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:37:18,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561675389] [2022-11-26 00:37:18,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:18,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:37:18,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:18,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:37:18,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:37:18,017 INFO L87 Difference]: Start difference. First operand 638 states and 825 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:20,467 INFO L93 Difference]: Finished difference Result 1226 states and 1582 transitions. [2022-11-26 00:37:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:37:20,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:20,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:20,470 INFO L225 Difference]: With dead ends: 1226 [2022-11-26 00:37:20,470 INFO L226 Difference]: Without dead ends: 1124 [2022-11-26 00:37:20,470 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:37:20,471 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1650 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:20,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 1846 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:37:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-26 00:37:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 638. [2022-11-26 00:37:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3231511254019293) internal successors, (823), 637 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 823 transitions. [2022-11-26 00:37:20,795 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 823 transitions. Word has length 97 [2022-11-26 00:37:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:20,795 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 823 transitions. [2022-11-26 00:37:20,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 823 transitions. [2022-11-26 00:37:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:20,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:20,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:20,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-26 00:37:20,798 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:20,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1424910206, now seen corresponding path program 1 times [2022-11-26 00:37:20,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:20,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153188703] [2022-11-26 00:37:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:20,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:21,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:21,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153188703] [2022-11-26 00:37:21,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153188703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:21,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:21,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:37:21,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502909621] [2022-11-26 00:37:21,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:21,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:37:21,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:21,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:37:21,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:37:21,426 INFO L87 Difference]: Start difference. First operand 638 states and 823 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:25,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:25,908 INFO L93 Difference]: Finished difference Result 1732 states and 2250 transitions. [2022-11-26 00:37:25,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-26 00:37:25,909 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:25,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:25,910 INFO L225 Difference]: With dead ends: 1732 [2022-11-26 00:37:25,911 INFO L226 Difference]: Without dead ends: 1626 [2022-11-26 00:37:25,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:37:25,912 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 3735 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3735 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:25,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3735 Valid, 1929 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 00:37:25,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2022-11-26 00:37:26,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 646. [2022-11-26 00:37:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 630 states have (on average 1.319047619047619) internal successors, (831), 645 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 831 transitions. [2022-11-26 00:37:26,325 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 831 transitions. Word has length 97 [2022-11-26 00:37:26,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:26,325 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 831 transitions. [2022-11-26 00:37:26,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 831 transitions. [2022-11-26 00:37:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:26,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:26,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:26,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-26 00:37:26,330 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:26,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:26,331 INFO L85 PathProgramCache]: Analyzing trace with hash -183952075, now seen corresponding path program 1 times [2022-11-26 00:37:26,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:26,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148357320] [2022-11-26 00:37:26,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:26,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:26,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:26,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148357320] [2022-11-26 00:37:26,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148357320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:26,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:26,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:37:26,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509524107] [2022-11-26 00:37:26,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:26,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:37:26,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:37:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:37:26,736 INFO L87 Difference]: Start difference. First operand 646 states and 831 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:29,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:29,268 INFO L93 Difference]: Finished difference Result 1230 states and 1583 transitions. [2022-11-26 00:37:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:37:29,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:29,271 INFO L225 Difference]: With dead ends: 1230 [2022-11-26 00:37:29,272 INFO L226 Difference]: Without dead ends: 1124 [2022-11-26 00:37:29,272 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:37:29,273 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1638 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:29,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 1765 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 00:37:29,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-26 00:37:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 646. [2022-11-26 00:37:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 630 states have (on average 1.3158730158730159) internal successors, (829), 645 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 829 transitions. [2022-11-26 00:37:29,636 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 829 transitions. Word has length 97 [2022-11-26 00:37:29,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:29,637 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 829 transitions. [2022-11-26 00:37:29,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 829 transitions. [2022-11-26 00:37:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:29,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:29,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:29,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-26 00:37:29,639 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1728245027, now seen corresponding path program 1 times [2022-11-26 00:37:29,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:29,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261340138] [2022-11-26 00:37:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:29,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:29,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:29,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261340138] [2022-11-26 00:37:29,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261340138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:29,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:29,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:37:29,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030192397] [2022-11-26 00:37:29,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:29,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:37:29,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:29,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:37:29,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:37:29,995 INFO L87 Difference]: Start difference. First operand 646 states and 829 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:32,719 INFO L93 Difference]: Finished difference Result 1286 states and 1662 transitions. [2022-11-26 00:37:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:37:32,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:32,721 INFO L225 Difference]: With dead ends: 1286 [2022-11-26 00:37:32,721 INFO L226 Difference]: Without dead ends: 1164 [2022-11-26 00:37:32,721 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:37:32,722 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1609 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:32,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 2214 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:37:32,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-11-26 00:37:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 646. [2022-11-26 00:37:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 630 states have (on average 1.3126984126984127) internal successors, (827), 645 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 827 transitions. [2022-11-26 00:37:33,055 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 827 transitions. Word has length 97 [2022-11-26 00:37:33,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:33,055 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 827 transitions. [2022-11-26 00:37:33,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:33,056 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 827 transitions. [2022-11-26 00:37:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:33,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:33,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:33,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-26 00:37:33,057 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:33,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1459574739, now seen corresponding path program 1 times [2022-11-26 00:37:33,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:33,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764882149] [2022-11-26 00:37:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:33,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:33,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:33,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764882149] [2022-11-26 00:37:33,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764882149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:33,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:33,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:37:33,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265724467] [2022-11-26 00:37:33,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:33,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:37:33,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:37:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:37:33,396 INFO L87 Difference]: Start difference. First operand 646 states and 827 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:35,976 INFO L93 Difference]: Finished difference Result 1226 states and 1574 transitions. [2022-11-26 00:37:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:37:35,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:35,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:35,978 INFO L225 Difference]: With dead ends: 1226 [2022-11-26 00:37:35,978 INFO L226 Difference]: Without dead ends: 1124 [2022-11-26 00:37:35,979 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:37:35,979 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1635 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:35,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 1904 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 00:37:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-26 00:37:36,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 646. [2022-11-26 00:37:36,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 630 states have (on average 1.3095238095238095) internal successors, (825), 645 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 825 transitions. [2022-11-26 00:37:36,383 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 825 transitions. Word has length 97 [2022-11-26 00:37:36,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:36,384 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 825 transitions. [2022-11-26 00:37:36,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:36,384 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 825 transitions. [2022-11-26 00:37:36,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:36,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:36,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:36,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-26 00:37:36,386 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:36,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1569790645, now seen corresponding path program 1 times [2022-11-26 00:37:36,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:36,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081324239] [2022-11-26 00:37:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:36,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:36,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:36,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081324239] [2022-11-26 00:37:36,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081324239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:36,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:36,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:37:36,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275149890] [2022-11-26 00:37:36,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:36,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:37:36,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:36,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:37:36,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:37:36,934 INFO L87 Difference]: Start difference. First operand 646 states and 825 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:41,702 INFO L93 Difference]: Finished difference Result 1628 states and 2102 transitions. [2022-11-26 00:37:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-26 00:37:41,704 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:41,706 INFO L225 Difference]: With dead ends: 1628 [2022-11-26 00:37:41,706 INFO L226 Difference]: Without dead ends: 1623 [2022-11-26 00:37:41,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:37:41,708 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 3320 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3320 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:41,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3320 Valid, 1709 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:37:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-11-26 00:37:42,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 654. [2022-11-26 00:37:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 638 states have (on average 1.3056426332288402) internal successors, (833), 653 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 833 transitions. [2022-11-26 00:37:42,097 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 833 transitions. Word has length 97 [2022-11-26 00:37:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:42,097 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 833 transitions. [2022-11-26 00:37:42,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 833 transitions. [2022-11-26 00:37:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:42,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:42,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:42,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-26 00:37:42,100 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash -810880663, now seen corresponding path program 1 times [2022-11-26 00:37:42,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:42,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832962411] [2022-11-26 00:37:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:42,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:42,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:42,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832962411] [2022-11-26 00:37:42,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832962411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:42,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:42,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:37:42,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469313229] [2022-11-26 00:37:42,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:42,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:37:42,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:42,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:37:42,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:37:42,667 INFO L87 Difference]: Start difference. First operand 654 states and 833 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:47,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:47,360 INFO L93 Difference]: Finished difference Result 1736 states and 2248 transitions. [2022-11-26 00:37:47,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-26 00:37:47,361 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:47,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:47,362 INFO L225 Difference]: With dead ends: 1736 [2022-11-26 00:37:47,363 INFO L226 Difference]: Without dead ends: 1634 [2022-11-26 00:37:47,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:37:47,364 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 3789 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3789 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:47,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3789 Valid, 1591 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-26 00:37:47,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2022-11-26 00:37:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 662. [2022-11-26 00:37:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.3018575851393188) internal successors, (841), 661 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 841 transitions. [2022-11-26 00:37:47,754 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 841 transitions. Word has length 97 [2022-11-26 00:37:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:47,754 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 841 transitions. [2022-11-26 00:37:47,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 841 transitions. [2022-11-26 00:37:47,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:47,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:47,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:47,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-26 00:37:47,757 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:47,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1948776647, now seen corresponding path program 1 times [2022-11-26 00:37:47,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:47,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442709171] [2022-11-26 00:37:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:47,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:48,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:48,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442709171] [2022-11-26 00:37:48,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442709171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:48,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:48,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:37:48,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529435193] [2022-11-26 00:37:48,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:48,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:37:48,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:48,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:37:48,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:37:48,101 INFO L87 Difference]: Start difference. First operand 662 states and 841 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:50,821 INFO L93 Difference]: Finished difference Result 1222 states and 1564 transitions. [2022-11-26 00:37:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:37:50,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:50,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:50,823 INFO L225 Difference]: With dead ends: 1222 [2022-11-26 00:37:50,823 INFO L226 Difference]: Without dead ends: 1124 [2022-11-26 00:37:50,823 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:37:50,824 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1634 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:50,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 1777 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 00:37:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-26 00:37:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 662. [2022-11-26 00:37:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.2987616099071206) internal successors, (839), 661 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 839 transitions. [2022-11-26 00:37:51,262 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 839 transitions. Word has length 97 [2022-11-26 00:37:51,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:51,262 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 839 transitions. [2022-11-26 00:37:51,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:51,262 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 839 transitions. [2022-11-26 00:37:51,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:51,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:51,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:51,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-26 00:37:51,264 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:51,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash 766051541, now seen corresponding path program 1 times [2022-11-26 00:37:51,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:51,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770276906] [2022-11-26 00:37:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:51,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:51,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:51,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770276906] [2022-11-26 00:37:51,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770276906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:51,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:51,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:37:51,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435245477] [2022-11-26 00:37:51,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:51,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:37:51,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:51,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:37:51,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:37:51,600 INFO L87 Difference]: Start difference. First operand 662 states and 839 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:54,428 INFO L93 Difference]: Finished difference Result 1129 states and 1436 transitions. [2022-11-26 00:37:54,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:37:54,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:54,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:54,435 INFO L225 Difference]: With dead ends: 1129 [2022-11-26 00:37:54,436 INFO L226 Difference]: Without dead ends: 1124 [2022-11-26 00:37:54,436 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:37:54,437 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1623 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:54,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 1802 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:37:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-26 00:37:54,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 662. [2022-11-26 00:37:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.2956656346749227) internal successors, (837), 661 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 837 transitions. [2022-11-26 00:37:54,823 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 837 transitions. Word has length 97 [2022-11-26 00:37:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:54,823 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 837 transitions. [2022-11-26 00:37:54,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:54,823 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 837 transitions. [2022-11-26 00:37:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:54,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:54,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:54,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-26 00:37:54,824 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:54,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1616718653, now seen corresponding path program 1 times [2022-11-26 00:37:54,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:54,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028238706] [2022-11-26 00:37:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:54,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:55,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:55,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028238706] [2022-11-26 00:37:55,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028238706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:55,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:55,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:37:55,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777349667] [2022-11-26 00:37:55,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:37:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:37:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:37:55,061 INFO L87 Difference]: Start difference. First operand 662 states and 837 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:57,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:57,830 INFO L93 Difference]: Finished difference Result 1205 states and 1532 transitions. [2022-11-26 00:37:57,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:37:57,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:37:57,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:57,832 INFO L225 Difference]: With dead ends: 1205 [2022-11-26 00:37:57,832 INFO L226 Difference]: Without dead ends: 1188 [2022-11-26 00:37:57,832 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:37:57,833 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1645 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:57,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 1780 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 00:37:57,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-11-26 00:37:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 662. [2022-11-26 00:37:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.2925696594427245) internal successors, (835), 661 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 835 transitions. [2022-11-26 00:37:58,204 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 835 transitions. Word has length 97 [2022-11-26 00:37:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:58,204 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 835 transitions. [2022-11-26 00:37:58,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 835 transitions. [2022-11-26 00:37:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:37:58,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:58,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:58,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-26 00:37:58,207 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:37:58,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1276634052, now seen corresponding path program 1 times [2022-11-26 00:37:58,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:58,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785354981] [2022-11-26 00:37:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:58,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:58,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:58,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785354981] [2022-11-26 00:37:58,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785354981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:58,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:58,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:37:58,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253891151] [2022-11-26 00:37:58,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:58,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:37:58,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:58,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:37:58,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:37:58,558 INFO L87 Difference]: Start difference. First operand 662 states and 835 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:01,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:01,121 INFO L93 Difference]: Finished difference Result 1226 states and 1562 transitions. [2022-11-26 00:38:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:38:01,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:38:01,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:01,122 INFO L225 Difference]: With dead ends: 1226 [2022-11-26 00:38:01,123 INFO L226 Difference]: Without dead ends: 1124 [2022-11-26 00:38:01,123 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:38:01,124 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1622 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:01,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 1833 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:38:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-26 00:38:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 662. [2022-11-26 00:38:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.2894736842105263) internal successors, (833), 661 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 833 transitions. [2022-11-26 00:38:01,477 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 833 transitions. Word has length 97 [2022-11-26 00:38:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:01,477 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 833 transitions. [2022-11-26 00:38:01,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 833 transitions. [2022-11-26 00:38:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-26 00:38:01,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:01,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:01,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-26 00:38:01,479 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:38:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash 10914966, now seen corresponding path program 1 times [2022-11-26 00:38:01,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:01,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682240738] [2022-11-26 00:38:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:01,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:01,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:01,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682240738] [2022-11-26 00:38:01,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682240738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:01,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:01,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:38:01,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394404838] [2022-11-26 00:38:01,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:01,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:38:01,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:01,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:38:01,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:38:01,919 INFO L87 Difference]: Start difference. First operand 662 states and 833 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:06,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:06,618 INFO L93 Difference]: Finished difference Result 1628 states and 2090 transitions. [2022-11-26 00:38:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-26 00:38:06,619 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-26 00:38:06,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:06,621 INFO L225 Difference]: With dead ends: 1628 [2022-11-26 00:38:06,621 INFO L226 Difference]: Without dead ends: 1623 [2022-11-26 00:38:06,622 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:38:06,622 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 3607 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3607 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:06,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3607 Valid, 2003 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-26 00:38:06,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-11-26 00:38:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 670. [2022-11-26 00:38:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 654 states have (on average 1.2859327217125383) internal successors, (841), 669 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 841 transitions. [2022-11-26 00:38:07,033 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 841 transitions. Word has length 97 [2022-11-26 00:38:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:07,034 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 841 transitions. [2022-11-26 00:38:07,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 841 transitions. [2022-11-26 00:38:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-26 00:38:07,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:07,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:07,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-26 00:38:07,036 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:38:07,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:07,036 INFO L85 PathProgramCache]: Analyzing trace with hash 956375610, now seen corresponding path program 1 times [2022-11-26 00:38:07,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:07,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101992598] [2022-11-26 00:38:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:07,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:07,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:07,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101992598] [2022-11-26 00:38:07,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101992598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:07,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:07,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:38:07,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723044511] [2022-11-26 00:38:07,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:07,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:38:07,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:38:07,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:38:07,325 INFO L87 Difference]: Start difference. First operand 670 states and 841 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:09,926 INFO L93 Difference]: Finished difference Result 1230 states and 1563 transitions. [2022-11-26 00:38:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:38:09,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-26 00:38:09,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:09,927 INFO L225 Difference]: With dead ends: 1230 [2022-11-26 00:38:09,928 INFO L226 Difference]: Without dead ends: 1124 [2022-11-26 00:38:09,928 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:38:09,929 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1218 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:09,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 1555 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-26 00:38:09,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-26 00:38:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 662. [2022-11-26 00:38:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.2863777089783281) internal successors, (831), 661 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 831 transitions. [2022-11-26 00:38:10,326 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 831 transitions. Word has length 98 [2022-11-26 00:38:10,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:10,327 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 831 transitions. [2022-11-26 00:38:10,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 831 transitions. [2022-11-26 00:38:10,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-26 00:38:10,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:10,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:10,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-26 00:38:10,328 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:38:10,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:10,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1152702306, now seen corresponding path program 1 times [2022-11-26 00:38:10,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:10,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432375721] [2022-11-26 00:38:10,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:10,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:10,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:10,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432375721] [2022-11-26 00:38:10,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432375721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:10,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:10,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:38:10,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475138162] [2022-11-26 00:38:10,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:10,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:38:10,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:10,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:38:10,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:38:10,537 INFO L87 Difference]: Start difference. First operand 662 states and 831 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:13,165 INFO L93 Difference]: Finished difference Result 1129 states and 1426 transitions. [2022-11-26 00:38:13,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:38:13,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-26 00:38:13,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:13,166 INFO L225 Difference]: With dead ends: 1129 [2022-11-26 00:38:13,167 INFO L226 Difference]: Without dead ends: 1124 [2022-11-26 00:38:13,167 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:38:13,167 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1743 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:13,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 1573 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-26 00:38:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-26 00:38:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 654. [2022-11-26 00:38:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 638 states have (on average 1.286833855799373) internal successors, (821), 653 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 821 transitions. [2022-11-26 00:38:13,538 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 821 transitions. Word has length 98 [2022-11-26 00:38:13,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:13,538 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 821 transitions. [2022-11-26 00:38:13,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:13,538 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 821 transitions. [2022-11-26 00:38:13,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-26 00:38:13,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:13,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:13,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-26 00:38:13,540 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:38:13,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:13,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1854308446, now seen corresponding path program 1 times [2022-11-26 00:38:13,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:13,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583917501] [2022-11-26 00:38:13,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:13,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:13,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:13,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583917501] [2022-11-26 00:38:13,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583917501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:13,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:13,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:38:13,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590084164] [2022-11-26 00:38:13,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:13,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:38:13,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:13,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:38:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:38:13,829 INFO L87 Difference]: Start difference. First operand 654 states and 821 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:16,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:16,572 INFO L93 Difference]: Finished difference Result 1226 states and 1554 transitions. [2022-11-26 00:38:16,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:38:16,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-26 00:38:16,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:16,574 INFO L225 Difference]: With dead ends: 1226 [2022-11-26 00:38:16,574 INFO L226 Difference]: Without dead ends: 1124 [2022-11-26 00:38:16,575 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:38:16,575 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1166 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:16,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1641 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:38:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-26 00:38:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 646. [2022-11-26 00:38:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 630 states have (on average 1.2873015873015874) internal successors, (811), 645 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 811 transitions. [2022-11-26 00:38:16,953 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 811 transitions. Word has length 98 [2022-11-26 00:38:16,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:16,953 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 811 transitions. [2022-11-26 00:38:16,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:16,953 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 811 transitions. [2022-11-26 00:38:16,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-26 00:38:16,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:16,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:16,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-26 00:38:16,955 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:38:16,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:16,955 INFO L85 PathProgramCache]: Analyzing trace with hash 72196395, now seen corresponding path program 1 times [2022-11-26 00:38:16,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:16,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651472995] [2022-11-26 00:38:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:16,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:17,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:17,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651472995] [2022-11-26 00:38:17,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651472995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:17,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:17,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:38:17,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71050513] [2022-11-26 00:38:17,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:17,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:38:17,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:17,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:38:17,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:38:17,220 INFO L87 Difference]: Start difference. First operand 646 states and 811 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:19,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:19,963 INFO L93 Difference]: Finished difference Result 1129 states and 1422 transitions. [2022-11-26 00:38:19,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:38:19,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-26 00:38:19,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:19,965 INFO L225 Difference]: With dead ends: 1129 [2022-11-26 00:38:19,965 INFO L226 Difference]: Without dead ends: 1124 [2022-11-26 00:38:19,965 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:38:19,966 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1153 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:19,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 1655 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:38:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-26 00:38:20,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 638. [2022-11-26 00:38:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.287781350482315) internal successors, (801), 637 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 801 transitions. [2022-11-26 00:38:20,332 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 801 transitions. Word has length 98 [2022-11-26 00:38:20,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:20,332 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 801 transitions. [2022-11-26 00:38:20,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 801 transitions. [2022-11-26 00:38:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-26 00:38:20,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:20,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:20,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-26 00:38:20,333 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:38:20,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:20,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1517389818, now seen corresponding path program 1 times [2022-11-26 00:38:20,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:20,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112851303] [2022-11-26 00:38:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:20,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:20,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:20,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112851303] [2022-11-26 00:38:20,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112851303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:20,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:20,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 00:38:20,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893764941] [2022-11-26 00:38:20,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:20,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:38:20,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:20,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:38:20,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:38:20,928 INFO L87 Difference]: Start difference. First operand 638 states and 801 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:25,213 INFO L93 Difference]: Finished difference Result 2126 states and 2744 transitions. [2022-11-26 00:38:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:38:25,213 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-26 00:38:25,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:25,216 INFO L225 Difference]: With dead ends: 2126 [2022-11-26 00:38:25,216 INFO L226 Difference]: Without dead ends: 1916 [2022-11-26 00:38:25,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-26 00:38:25,217 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 2006 mSDsluCounter, 5931 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 6982 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:25,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2006 Valid, 6982 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 00:38:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2022-11-26 00:38:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 526. [2022-11-26 00:38:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 514 states have (on average 1.2743190661478598) internal successors, (655), 525 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 655 transitions. [2022-11-26 00:38:25,595 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 655 transitions. Word has length 99 [2022-11-26 00:38:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:25,595 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 655 transitions. [2022-11-26 00:38:25,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 655 transitions. [2022-11-26 00:38:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-26 00:38:25,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:25,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:25,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-26 00:38:25,597 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:38:25,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:25,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2051081877, now seen corresponding path program 1 times [2022-11-26 00:38:25,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:25,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031447906] [2022-11-26 00:38:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:25,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:26,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:26,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031447906] [2022-11-26 00:38:26,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031447906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:26,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:26,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 00:38:26,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546557256] [2022-11-26 00:38:26,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:26,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:38:26,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:26,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:38:26,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:38:26,327 INFO L87 Difference]: Start difference. First operand 526 states and 655 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:28,378 INFO L93 Difference]: Finished difference Result 864 states and 1078 transitions. [2022-11-26 00:38:28,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:38:28,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-26 00:38:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:28,379 INFO L225 Difference]: With dead ends: 864 [2022-11-26 00:38:28,379 INFO L226 Difference]: Without dead ends: 760 [2022-11-26 00:38:28,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:38:28,380 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1751 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:28,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 2033 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 00:38:28,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-26 00:38:28,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 516. [2022-11-26 00:38:28,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 505 states have (on average 1.2673267326732673) internal successors, (640), 515 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:28,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 640 transitions. [2022-11-26 00:38:28,779 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 640 transitions. Word has length 99 [2022-11-26 00:38:28,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:28,779 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 640 transitions. [2022-11-26 00:38:28,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:28,779 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 640 transitions. [2022-11-26 00:38:28,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-26 00:38:28,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:28,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:28,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-26 00:38:28,780 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:38:28,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:28,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1752184082, now seen corresponding path program 1 times [2022-11-26 00:38:28,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:28,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141145568] [2022-11-26 00:38:28,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:28,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:29,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:29,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141145568] [2022-11-26 00:38:29,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141145568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:29,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:29,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 00:38:29,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459490304] [2022-11-26 00:38:29,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:29,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:38:29,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:29,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:38:29,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:38:29,460 INFO L87 Difference]: Start difference. First operand 516 states and 640 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:31,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:31,413 INFO L93 Difference]: Finished difference Result 856 states and 1063 transitions. [2022-11-26 00:38:31,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:38:31,414 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-26 00:38:31,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:31,415 INFO L225 Difference]: With dead ends: 856 [2022-11-26 00:38:31,415 INFO L226 Difference]: Without dead ends: 752 [2022-11-26 00:38:31,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:38:31,416 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 1736 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:31,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 1676 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:38:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-11-26 00:38:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 504. [2022-11-26 00:38:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 494 states have (on average 1.2611336032388665) internal successors, (623), 503 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 623 transitions. [2022-11-26 00:38:31,819 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 623 transitions. Word has length 99 [2022-11-26 00:38:31,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:31,819 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 623 transitions. [2022-11-26 00:38:31,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:31,819 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 623 transitions. [2022-11-26 00:38:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-26 00:38:31,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:31,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:31,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-26 00:38:31,820 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:38:31,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:31,821 INFO L85 PathProgramCache]: Analyzing trace with hash -28333066, now seen corresponding path program 1 times [2022-11-26 00:38:31,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:31,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559945469] [2022-11-26 00:38:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:31,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:34,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:34,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559945469] [2022-11-26 00:38:34,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559945469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:34,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:34,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-26 00:38:34,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504676629] [2022-11-26 00:38:34,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:34,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-26 00:38:34,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-26 00:38:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2022-11-26 00:38:34,634 INFO L87 Difference]: Start difference. First operand 504 states and 623 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:43,533 INFO L93 Difference]: Finished difference Result 1066 states and 1337 transitions. [2022-11-26 00:38:43,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-26 00:38:43,534 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-26 00:38:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:43,535 INFO L225 Difference]: With dead ends: 1066 [2022-11-26 00:38:43,535 INFO L226 Difference]: Without dead ends: 961 [2022-11-26 00:38:43,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=529, Invalid=3131, Unknown=0, NotChecked=0, Total=3660 [2022-11-26 00:38:43,536 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1376 mSDsluCounter, 9200 mSDsCounter, 0 mSdLazyCounter, 4804 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 9671 SdHoareTripleChecker+Invalid, 4812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:43,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 9671 Invalid, 4812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 4804 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-26 00:38:43,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-11-26 00:38:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 523. [2022-11-26 00:38:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 513 states have (on average 1.2612085769980508) internal successors, (647), 522 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 647 transitions. [2022-11-26 00:38:44,005 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 647 transitions. Word has length 99 [2022-11-26 00:38:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:44,005 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 647 transitions. [2022-11-26 00:38:44,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 647 transitions. [2022-11-26 00:38:44,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-26 00:38:44,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:44,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:44,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-26 00:38:44,007 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:38:44,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:44,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1080698848, now seen corresponding path program 1 times [2022-11-26 00:38:44,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:44,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567931054] [2022-11-26 00:38:44,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:44,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:47,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:47,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567931054] [2022-11-26 00:38:47,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567931054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:47,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:47,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-26 00:38:47,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853971688] [2022-11-26 00:38:47,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:47,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-26 00:38:47,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:47,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-26 00:38:47,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2022-11-26 00:38:47,094 INFO L87 Difference]: Start difference. First operand 523 states and 647 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:58,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:58,408 INFO L93 Difference]: Finished difference Result 1185 states and 1497 transitions. [2022-11-26 00:38:58,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-26 00:38:58,409 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-26 00:38:58,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:58,410 INFO L225 Difference]: With dead ends: 1185 [2022-11-26 00:38:58,410 INFO L226 Difference]: Without dead ends: 1084 [2022-11-26 00:38:58,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=675, Invalid=3881, Unknown=0, NotChecked=0, Total=4556 [2022-11-26 00:38:58,412 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 1391 mSDsluCounter, 10466 mSDsCounter, 0 mSdLazyCounter, 5549 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 11089 SdHoareTripleChecker+Invalid, 5554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:58,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 11089 Invalid, 5554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 5549 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-26 00:38:58,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-11-26 00:38:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 533. [2022-11-26 00:38:58,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 523 states have (on average 1.260038240917782) internal successors, (659), 532 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:58,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 659 transitions. [2022-11-26 00:38:58,938 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 659 transitions. Word has length 99 [2022-11-26 00:38:58,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:58,938 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 659 transitions. [2022-11-26 00:38:58,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:58,938 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 659 transitions. [2022-11-26 00:38:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-26 00:38:58,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:58,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:58,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-26 00:38:58,939 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:38:58,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:58,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1691259862, now seen corresponding path program 1 times [2022-11-26 00:38:58,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:58,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732280469] [2022-11-26 00:38:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:58,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:59,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:59,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732280469] [2022-11-26 00:38:59,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732280469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:59,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:59,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 00:38:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973323949] [2022-11-26 00:38:59,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:59,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:38:59,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:59,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:38:59,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:38:59,510 INFO L87 Difference]: Start difference. First operand 533 states and 659 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:04,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:04,151 INFO L93 Difference]: Finished difference Result 1935 states and 2477 transitions. [2022-11-26 00:39:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:39:04,151 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-26 00:39:04,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:04,153 INFO L225 Difference]: With dead ends: 1935 [2022-11-26 00:39:04,153 INFO L226 Difference]: Without dead ends: 1735 [2022-11-26 00:39:04,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2022-11-26 00:39:04,154 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 2414 mSDsluCounter, 4458 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2414 SdHoareTripleChecker+Valid, 5319 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:04,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2414 Valid, 5319 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:39:04,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2022-11-26 00:39:04,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 431. [2022-11-26 00:39:04,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 422 states have (on average 1.2464454976303319) internal successors, (526), 430 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 526 transitions. [2022-11-26 00:39:04,588 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 526 transitions. Word has length 99 [2022-11-26 00:39:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:04,588 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 526 transitions. [2022-11-26 00:39:04,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 526 transitions. [2022-11-26 00:39:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-26 00:39:04,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:04,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:04,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-26 00:39:04,589 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:04,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:04,590 INFO L85 PathProgramCache]: Analyzing trace with hash -122361806, now seen corresponding path program 1 times [2022-11-26 00:39:04,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:04,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756638652] [2022-11-26 00:39:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:04,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:05,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:05,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756638652] [2022-11-26 00:39:05,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756638652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:05,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:05,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 00:39:05,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305760211] [2022-11-26 00:39:05,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:05,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:39:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:39:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:39:05,218 INFO L87 Difference]: Start difference. First operand 431 states and 526 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:07,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:07,095 INFO L93 Difference]: Finished difference Result 842 states and 1060 transitions. [2022-11-26 00:39:07,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:39:07,095 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-26 00:39:07,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:07,096 INFO L225 Difference]: With dead ends: 842 [2022-11-26 00:39:07,097 INFO L226 Difference]: Without dead ends: 636 [2022-11-26 00:39:07,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:39:07,098 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 991 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:07,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 2780 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:39:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-26 00:39:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 323. [2022-11-26 00:39:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 318 states have (on average 1.229559748427673) internal successors, (391), 322 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 391 transitions. [2022-11-26 00:39:07,486 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 391 transitions. Word has length 99 [2022-11-26 00:39:07,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:07,486 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 391 transitions. [2022-11-26 00:39:07,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 391 transitions. [2022-11-26 00:39:07,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-26 00:39:07,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:07,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:07,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-26 00:39:07,487 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:07,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:07,488 INFO L85 PathProgramCache]: Analyzing trace with hash -480559089, now seen corresponding path program 1 times [2022-11-26 00:39:07,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:07,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726302532] [2022-11-26 00:39:07,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:07,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:08,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:08,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726302532] [2022-11-26 00:39:08,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726302532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:08,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:08,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-26 00:39:08,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74748801] [2022-11-26 00:39:08,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:08,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-26 00:39:08,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:08,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-26 00:39:08,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:39:08,525 INFO L87 Difference]: Start difference. First operand 323 states and 391 transitions. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 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) [2022-11-26 00:39:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:13,499 INFO L93 Difference]: Finished difference Result 1250 states and 1597 transitions. [2022-11-26 00:39:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-26 00:39:13,499 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 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 [2022-11-26 00:39:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:13,501 INFO L225 Difference]: With dead ends: 1250 [2022-11-26 00:39:13,501 INFO L226 Difference]: Without dead ends: 1110 [2022-11-26 00:39:13,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2022-11-26 00:39:13,502 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1151 mSDsluCounter, 5193 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 5757 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:13,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 5757 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:39:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2022-11-26 00:39:13,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 335. [2022-11-26 00:39:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 330 states have (on average 1.2272727272727273) internal successors, (405), 334 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 405 transitions. [2022-11-26 00:39:13,910 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 405 transitions. Word has length 100 [2022-11-26 00:39:13,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:13,911 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 405 transitions. [2022-11-26 00:39:13,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 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) [2022-11-26 00:39:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 405 transitions. [2022-11-26 00:39:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-26 00:39:13,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:13,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:13,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-26 00:39:13,912 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:13,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:13,913 INFO L85 PathProgramCache]: Analyzing trace with hash -125460370, now seen corresponding path program 1 times [2022-11-26 00:39:13,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:13,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769289879] [2022-11-26 00:39:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:13,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:14,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:14,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769289879] [2022-11-26 00:39:14,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769289879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:14,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:14,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:39:14,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632999159] [2022-11-26 00:39:14,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:14,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:39:14,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:14,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:39:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:39:14,154 INFO L87 Difference]: Start difference. First operand 335 states and 405 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 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) [2022-11-26 00:39:15,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:15,641 INFO L93 Difference]: Finished difference Result 490 states and 597 transitions. [2022-11-26 00:39:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:39:15,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 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 [2022-11-26 00:39:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:15,642 INFO L225 Difference]: With dead ends: 490 [2022-11-26 00:39:15,642 INFO L226 Difference]: Without dead ends: 483 [2022-11-26 00:39:15,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:39:15,643 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 723 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:15,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 744 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:39:15,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-26 00:39:16,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 335. [2022-11-26 00:39:16,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 330 states have (on average 1.2242424242424241) internal successors, (404), 334 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 404 transitions. [2022-11-26 00:39:16,060 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 404 transitions. Word has length 100 [2022-11-26 00:39:16,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:16,060 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 404 transitions. [2022-11-26 00:39:16,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 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) [2022-11-26 00:39:16,060 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 404 transitions. [2022-11-26 00:39:16,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-26 00:39:16,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:16,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:16,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-26 00:39:16,061 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:16,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:16,062 INFO L85 PathProgramCache]: Analyzing trace with hash 38543128, now seen corresponding path program 1 times [2022-11-26 00:39:16,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:16,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229461590] [2022-11-26 00:39:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:16,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:16,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:16,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229461590] [2022-11-26 00:39:16,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229461590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:16,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:16,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:39:16,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303225317] [2022-11-26 00:39:16,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:16,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:39:16,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:39:16,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:39:16,319 INFO L87 Difference]: Start difference. First operand 335 states and 404 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 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) [2022-11-26 00:39:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:18,886 INFO L93 Difference]: Finished difference Result 821 states and 1034 transitions. [2022-11-26 00:39:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:39:18,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 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 [2022-11-26 00:39:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:18,888 INFO L225 Difference]: With dead ends: 821 [2022-11-26 00:39:18,888 INFO L226 Difference]: Without dead ends: 693 [2022-11-26 00:39:18,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:39:18,889 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 962 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:18,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 869 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:39:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-26 00:39:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 335. [2022-11-26 00:39:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 330 states have (on average 1.2181818181818183) internal successors, (402), 334 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 402 transitions. [2022-11-26 00:39:19,298 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 402 transitions. Word has length 100 [2022-11-26 00:39:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:19,298 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 402 transitions. [2022-11-26 00:39:19,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 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) [2022-11-26 00:39:19,299 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 402 transitions. [2022-11-26 00:39:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-26 00:39:19,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:19,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:19,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-26 00:39:19,300 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:19,300 INFO L85 PathProgramCache]: Analyzing trace with hash -801357341, now seen corresponding path program 1 times [2022-11-26 00:39:19,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:19,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410529519] [2022-11-26 00:39:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:19,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:19,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:19,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410529519] [2022-11-26 00:39:19,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410529519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:19,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:19,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:39:19,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20052000] [2022-11-26 00:39:19,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:19,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:39:19,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:39:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:39:19,698 INFO L87 Difference]: Start difference. First operand 335 states and 402 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 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) [2022-11-26 00:39:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:22,790 INFO L93 Difference]: Finished difference Result 737 states and 918 transitions. [2022-11-26 00:39:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:39:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 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 [2022-11-26 00:39:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:22,792 INFO L225 Difference]: With dead ends: 737 [2022-11-26 00:39:22,792 INFO L226 Difference]: Without dead ends: 730 [2022-11-26 00:39:22,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=541, Unknown=0, NotChecked=0, Total=756 [2022-11-26 00:39:22,792 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 2031 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:22,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2031 Valid, 843 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:39:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-11-26 00:39:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 339. [2022-11-26 00:39:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 334 states have (on average 1.215568862275449) internal successors, (406), 338 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 406 transitions. [2022-11-26 00:39:23,295 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 406 transitions. Word has length 100 [2022-11-26 00:39:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:23,295 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 406 transitions. [2022-11-26 00:39:23,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 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) [2022-11-26 00:39:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 406 transitions. [2022-11-26 00:39:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-26 00:39:23,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:23,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:23,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-26 00:39:23,297 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:23,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:23,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1340768153, now seen corresponding path program 1 times [2022-11-26 00:39:23,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:23,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870084197] [2022-11-26 00:39:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:23,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:23,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:23,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870084197] [2022-11-26 00:39:23,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870084197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:23,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:23,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 00:39:23,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305210519] [2022-11-26 00:39:23,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:23,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:39:23,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:39:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:39:23,939 INFO L87 Difference]: Start difference. First operand 339 states and 406 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 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) [2022-11-26 00:39:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:25,776 INFO L93 Difference]: Finished difference Result 601 states and 741 transitions. [2022-11-26 00:39:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:39:25,777 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 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 [2022-11-26 00:39:25,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:25,778 INFO L225 Difference]: With dead ends: 601 [2022-11-26 00:39:25,778 INFO L226 Difference]: Without dead ends: 479 [2022-11-26 00:39:25,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:39:25,779 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 744 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:25,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1916 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:39:25,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-11-26 00:39:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 296. [2022-11-26 00:39:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 292 states have (on average 1.1986301369863013) internal successors, (350), 295 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 350 transitions. [2022-11-26 00:39:26,221 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 350 transitions. Word has length 100 [2022-11-26 00:39:26,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:26,222 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 350 transitions. [2022-11-26 00:39:26,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 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) [2022-11-26 00:39:26,222 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 350 transitions. [2022-11-26 00:39:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-26 00:39:26,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:26,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:26,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-26 00:39:26,223 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:26,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1435047818, now seen corresponding path program 1 times [2022-11-26 00:39:26,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:26,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713951805] [2022-11-26 00:39:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:26,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:26,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713951805] [2022-11-26 00:39:26,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713951805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:26,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:26,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:39:26,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139820258] [2022-11-26 00:39:26,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:26,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:39:26,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:26,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:39:26,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:39:26,439 INFO L87 Difference]: Start difference. First operand 296 states and 350 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 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) [2022-11-26 00:39:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:28,044 INFO L93 Difference]: Finished difference Result 447 states and 537 transitions. [2022-11-26 00:39:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:39:28,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 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 [2022-11-26 00:39:28,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:28,045 INFO L225 Difference]: With dead ends: 447 [2022-11-26 00:39:28,045 INFO L226 Difference]: Without dead ends: 440 [2022-11-26 00:39:28,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:39:28,046 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 473 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:28,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 701 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:39:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-26 00:39:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 292. [2022-11-26 00:39:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 288 states have (on average 1.1979166666666667) internal successors, (345), 291 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) [2022-11-26 00:39:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 345 transitions. [2022-11-26 00:39:28,479 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 345 transitions. Word has length 101 [2022-11-26 00:39:28,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:28,480 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 345 transitions. [2022-11-26 00:39:28,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 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) [2022-11-26 00:39:28,480 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 345 transitions. [2022-11-26 00:39:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-26 00:39:28,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:28,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:28,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-26 00:39:28,481 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:28,481 INFO L85 PathProgramCache]: Analyzing trace with hash 912718675, now seen corresponding path program 1 times [2022-11-26 00:39:28,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:28,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854065169] [2022-11-26 00:39:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:28,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:29,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:29,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854065169] [2022-11-26 00:39:29,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854065169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:29,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:29,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 00:39:29,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418849644] [2022-11-26 00:39:29,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:29,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:39:29,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:29,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:39:29,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:39:29,143 INFO L87 Difference]: Start difference. First operand 292 states and 345 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 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) [2022-11-26 00:39:31,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:31,577 INFO L93 Difference]: Finished difference Result 654 states and 809 transitions. [2022-11-26 00:39:31,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:39:31,578 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 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 [2022-11-26 00:39:31,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:31,588 INFO L225 Difference]: With dead ends: 654 [2022-11-26 00:39:31,589 INFO L226 Difference]: Without dead ends: 648 [2022-11-26 00:39:31,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:39:31,589 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 928 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:31,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 1785 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:39:31,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-11-26 00:39:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 286. [2022-11-26 00:39:32,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 283 states have (on average 1.1943462897526502) internal successors, (338), 285 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 338 transitions. [2022-11-26 00:39:32,020 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 338 transitions. Word has length 102 [2022-11-26 00:39:32,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:32,020 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 338 transitions. [2022-11-26 00:39:32,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 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) [2022-11-26 00:39:32,021 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 338 transitions. [2022-11-26 00:39:32,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-26 00:39:32,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:32,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:32,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-26 00:39:32,022 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:32,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1107731518, now seen corresponding path program 1 times [2022-11-26 00:39:32,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:32,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036983981] [2022-11-26 00:39:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:32,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:35,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:35,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036983981] [2022-11-26 00:39:35,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036983981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:35,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:35,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-26 00:39:35,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760938778] [2022-11-26 00:39:35,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:35,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-26 00:39:35,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:35,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-26 00:39:35,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2022-11-26 00:39:35,035 INFO L87 Difference]: Start difference. First operand 286 states and 338 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 32 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) [2022-11-26 00:39:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:41,786 INFO L93 Difference]: Finished difference Result 475 states and 567 transitions. [2022-11-26 00:39:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-26 00:39:41,787 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 32 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 [2022-11-26 00:39:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:41,788 INFO L225 Difference]: With dead ends: 475 [2022-11-26 00:39:41,788 INFO L226 Difference]: Without dead ends: 467 [2022-11-26 00:39:41,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=557, Invalid=3103, Unknown=0, NotChecked=0, Total=3660 [2022-11-26 00:39:41,789 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 727 mSDsluCounter, 4320 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 4553 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:41,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 4553 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-26 00:39:41,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-26 00:39:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 305. [2022-11-26 00:39:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 302 states have (on average 1.195364238410596) internal successors, (361), 304 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 361 transitions. [2022-11-26 00:39:42,229 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 361 transitions. Word has length 102 [2022-11-26 00:39:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:42,230 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 361 transitions. [2022-11-26 00:39:42,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 32 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) [2022-11-26 00:39:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 361 transitions. [2022-11-26 00:39:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-26 00:39:42,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:42,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:42,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-26 00:39:42,231 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:42,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:42,231 INFO L85 PathProgramCache]: Analyzing trace with hash 110806707, now seen corresponding path program 1 times [2022-11-26 00:39:42,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:42,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508803769] [2022-11-26 00:39:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:42,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:44,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:44,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508803769] [2022-11-26 00:39:44,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508803769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:44,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:44,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-26 00:39:44,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519715579] [2022-11-26 00:39:44,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:44,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-26 00:39:44,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-26 00:39:44,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2022-11-26 00:39:44,364 INFO L87 Difference]: Start difference. First operand 305 states and 361 transitions. Second operand has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 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) [2022-11-26 00:39:49,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:49,035 INFO L93 Difference]: Finished difference Result 342 states and 399 transitions. [2022-11-26 00:39:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-26 00:39:49,036 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 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 [2022-11-26 00:39:49,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:49,037 INFO L225 Difference]: With dead ends: 342 [2022-11-26 00:39:49,037 INFO L226 Difference]: Without dead ends: 334 [2022-11-26 00:39:49,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=496, Invalid=2810, Unknown=0, NotChecked=0, Total=3306 [2022-11-26 00:39:49,038 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 676 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:49,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 2822 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-26 00:39:49,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-26 00:39:49,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 314. [2022-11-26 00:39:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 311 states have (on average 1.1961414790996785) internal successors, (372), 313 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 372 transitions. [2022-11-26 00:39:49,480 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 372 transitions. Word has length 102 [2022-11-26 00:39:49,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:49,480 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 372 transitions. [2022-11-26 00:39:49,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 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) [2022-11-26 00:39:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 372 transitions. [2022-11-26 00:39:49,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-26 00:39:49,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:49,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:49,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-26 00:39:49,481 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:49,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:49,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2140279419, now seen corresponding path program 1 times [2022-11-26 00:39:49,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:49,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936333753] [2022-11-26 00:39:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:49,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:50,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:50,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936333753] [2022-11-26 00:39:50,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936333753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:50,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:50,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 00:39:50,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11504055] [2022-11-26 00:39:50,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:50,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:39:50,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:50,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:39:50,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:39:50,256 INFO L87 Difference]: Start difference. First operand 314 states and 372 transitions. Second operand has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 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) [2022-11-26 00:39:54,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:54,294 INFO L93 Difference]: Finished difference Result 908 states and 1142 transitions. [2022-11-26 00:39:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:39:54,295 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 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 [2022-11-26 00:39:54,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:54,296 INFO L225 Difference]: With dead ends: 908 [2022-11-26 00:39:54,296 INFO L226 Difference]: Without dead ends: 893 [2022-11-26 00:39:54,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-26 00:39:54,297 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1095 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:54,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 2721 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:39:54,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-11-26 00:39:54,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 293. [2022-11-26 00:39:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 291 states have (on average 1.1924398625429553) internal successors, (347), 292 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 347 transitions. [2022-11-26 00:39:54,776 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 347 transitions. Word has length 103 [2022-11-26 00:39:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:54,777 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 347 transitions. [2022-11-26 00:39:54,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 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) [2022-11-26 00:39:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 347 transitions. [2022-11-26 00:39:54,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-26 00:39:54,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:54,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:54,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-26 00:39:54,778 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:54,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:54,779 INFO L85 PathProgramCache]: Analyzing trace with hash 131660042, now seen corresponding path program 1 times [2022-11-26 00:39:54,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:54,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191404569] [2022-11-26 00:39:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:54,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:55,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:55,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191404569] [2022-11-26 00:39:55,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191404569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:55,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:55,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 00:39:55,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222759405] [2022-11-26 00:39:55,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:55,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:39:55,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:39:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:39:55,592 INFO L87 Difference]: Start difference. First operand 293 states and 347 transitions. Second operand has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 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) [2022-11-26 00:39:59,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:59,505 INFO L93 Difference]: Finished difference Result 897 states and 1129 transitions. [2022-11-26 00:39:59,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:39:59,505 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 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 [2022-11-26 00:39:59,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:59,507 INFO L225 Difference]: With dead ends: 897 [2022-11-26 00:39:59,507 INFO L226 Difference]: Without dead ends: 871 [2022-11-26 00:39:59,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-26 00:39:59,510 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 857 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:59,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 3099 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:39:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-26 00:39:59,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 244. [2022-11-26 00:39:59,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.1893004115226338) internal successors, (289), 243 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 289 transitions. [2022-11-26 00:39:59,955 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 289 transitions. Word has length 103 [2022-11-26 00:39:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:59,955 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 289 transitions. [2022-11-26 00:39:59,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 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) [2022-11-26 00:39:59,955 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 289 transitions. [2022-11-26 00:39:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-26 00:39:59,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:59,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:59,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-26 00:39:59,956 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:39:59,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:59,957 INFO L85 PathProgramCache]: Analyzing trace with hash -345625332, now seen corresponding path program 1 times [2022-11-26 00:39:59,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:59,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103555809] [2022-11-26 00:39:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:59,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:00,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:00,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103555809] [2022-11-26 00:40:00,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103555809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:40:00,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:40:00,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:40:00,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943549856] [2022-11-26 00:40:00,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:40:00,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:40:00,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:00,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:40:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:40:00,082 INFO L87 Difference]: Start difference. First operand 244 states and 289 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:00,835 INFO L93 Difference]: Finished difference Result 351 states and 430 transitions. [2022-11-26 00:40:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:40:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-11-26 00:40:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:00,836 INFO L225 Difference]: With dead ends: 351 [2022-11-26 00:40:00,836 INFO L226 Difference]: Without dead ends: 301 [2022-11-26 00:40:00,837 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:40:00,837 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 75 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:00,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 348 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:40:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-26 00:40:01,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 291. [2022-11-26 00:40:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.206896551724138) internal successors, (350), 290 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:01,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2022-11-26 00:40:01,458 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 122 [2022-11-26 00:40:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:01,459 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2022-11-26 00:40:01,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2022-11-26 00:40:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-26 00:40:01,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:01,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:01,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-26 00:40:01,460 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:40:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash -161719874, now seen corresponding path program 1 times [2022-11-26 00:40:01,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:01,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377949036] [2022-11-26 00:40:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:01,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:01,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:01,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377949036] [2022-11-26 00:40:01,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377949036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:40:01,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:40:01,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:40:01,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819406368] [2022-11-26 00:40:01,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:40:01,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:40:01,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:01,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:40:01,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:40:01,570 INFO L87 Difference]: Start difference. First operand 291 states and 350 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:02,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:02,841 INFO L93 Difference]: Finished difference Result 575 states and 726 transitions. [2022-11-26 00:40:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:40:02,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-11-26 00:40:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:02,842 INFO L225 Difference]: With dead ends: 575 [2022-11-26 00:40:02,842 INFO L226 Difference]: Without dead ends: 433 [2022-11-26 00:40:02,843 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:40:02,843 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 68 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:02,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 348 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:40:02,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-26 00:40:03,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 419. [2022-11-26 00:40:03,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.2416267942583732) internal successors, (519), 418 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 519 transitions. [2022-11-26 00:40:03,957 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 519 transitions. Word has length 125 [2022-11-26 00:40:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:03,957 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 519 transitions. [2022-11-26 00:40:03,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:03,958 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 519 transitions. [2022-11-26 00:40:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-26 00:40:03,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:03,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:03,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-26 00:40:03,959 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:40:03,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:03,959 INFO L85 PathProgramCache]: Analyzing trace with hash -417633743, now seen corresponding path program 1 times [2022-11-26 00:40:03,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:03,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150073213] [2022-11-26 00:40:03,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:03,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:04,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:04,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150073213] [2022-11-26 00:40:04,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150073213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:40:04,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:40:04,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:40:04,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323650451] [2022-11-26 00:40:04,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:40:04,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:40:04,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:04,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:40:04,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:40:04,076 INFO L87 Difference]: Start difference. First operand 419 states and 519 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:06,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:06,342 INFO L93 Difference]: Finished difference Result 959 states and 1233 transitions. [2022-11-26 00:40:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:40:06,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-26 00:40:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:06,344 INFO L225 Difference]: With dead ends: 959 [2022-11-26 00:40:06,344 INFO L226 Difference]: Without dead ends: 689 [2022-11-26 00:40:06,345 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:40:06,345 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 61 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:06,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 348 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:40:06,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-11-26 00:40:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 663. [2022-11-26 00:40:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.2673716012084593) internal successors, (839), 662 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 839 transitions. [2022-11-26 00:40:08,488 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 839 transitions. Word has length 128 [2022-11-26 00:40:08,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:08,488 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 839 transitions. [2022-11-26 00:40:08,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 839 transitions. [2022-11-26 00:40:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-26 00:40:08,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:08,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:08,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-26 00:40:08,490 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:40:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:08,490 INFO L85 PathProgramCache]: Analyzing trace with hash 935915040, now seen corresponding path program 1 times [2022-11-26 00:40:08,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:08,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576135713] [2022-11-26 00:40:08,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:08,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:08,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:08,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576135713] [2022-11-26 00:40:08,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576135713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:40:08,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:40:08,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:40:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394460220] [2022-11-26 00:40:08,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:40:08,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:40:08,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:40:08,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:40:08,648 INFO L87 Difference]: Start difference. First operand 663 states and 839 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:12,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:12,973 INFO L93 Difference]: Finished difference Result 1691 states and 2193 transitions. [2022-11-26 00:40:12,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:40:12,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2022-11-26 00:40:12,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:12,975 INFO L225 Difference]: With dead ends: 1691 [2022-11-26 00:40:12,975 INFO L226 Difference]: Without dead ends: 1177 [2022-11-26 00:40:12,976 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:40:12,977 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 54 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:12,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 348 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:40:12,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-11-26 00:40:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1127. [2022-11-26 00:40:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 1.2815275310834813) internal successors, (1443), 1126 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1443 transitions. [2022-11-26 00:40:17,104 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1443 transitions. Word has length 131 [2022-11-26 00:40:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:17,104 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1443 transitions. [2022-11-26 00:40:17,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1443 transitions. [2022-11-26 00:40:17,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-26 00:40:17,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:17,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:17,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-26 00:40:17,106 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:40:17,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:17,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1832033498, now seen corresponding path program 1 times [2022-11-26 00:40:17,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:17,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251836803] [2022-11-26 00:40:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:17,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:17,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:17,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251836803] [2022-11-26 00:40:17,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251836803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:40:17,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:40:17,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:40:17,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829849577] [2022-11-26 00:40:17,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:40:17,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:40:17,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:17,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:40:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:40:17,279 INFO L87 Difference]: Start difference. First operand 1127 states and 1443 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:25,335 INFO L93 Difference]: Finished difference Result 3083 states and 4005 transitions. [2022-11-26 00:40:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:40:25,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-11-26 00:40:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:25,338 INFO L225 Difference]: With dead ends: 3083 [2022-11-26 00:40:25,338 INFO L226 Difference]: Without dead ends: 2105 [2022-11-26 00:40:25,339 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:40:25,339 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 47 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:25,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 348 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:40:25,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2022-11-26 00:40:33,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2007. [2022-11-26 00:40:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 2006 states have (on average 1.2856430707876372) internal successors, (2579), 2006 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:33,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 2579 transitions. [2022-11-26 00:40:33,070 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 2579 transitions. Word has length 134 [2022-11-26 00:40:33,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:33,070 INFO L495 AbstractCegarLoop]: Abstraction has 2007 states and 2579 transitions. [2022-11-26 00:40:33,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 2579 transitions. [2022-11-26 00:40:33,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-26 00:40:33,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:33,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:33,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-26 00:40:33,071 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:40:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:33,072 INFO L85 PathProgramCache]: Analyzing trace with hash -415495780, now seen corresponding path program 1 times [2022-11-26 00:40:33,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:33,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894075900] [2022-11-26 00:40:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:33,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:33,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:33,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894075900] [2022-11-26 00:40:33,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894075900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:40:33,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:40:33,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:40:33,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120531572] [2022-11-26 00:40:33,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:40:33,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:40:33,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:33,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:40:33,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:40:33,259 INFO L87 Difference]: Start difference. First operand 2007 states and 2579 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:46,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:46,611 INFO L93 Difference]: Finished difference Result 5723 states and 7413 transitions. [2022-11-26 00:40:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:40:46,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-11-26 00:40:46,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:46,616 INFO L225 Difference]: With dead ends: 5723 [2022-11-26 00:40:46,616 INFO L226 Difference]: Without dead ends: 3865 [2022-11-26 00:40:46,618 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:40:46,618 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 37 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:46,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 348 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:40:46,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2022-11-26 00:40:59,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3671. [2022-11-26 00:40:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3670 states have (on average 1.2825613079019074) internal successors, (4707), 3670 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 4707 transitions. [2022-11-26 00:40:59,406 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 4707 transitions. Word has length 137 [2022-11-26 00:40:59,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:59,406 INFO L495 AbstractCegarLoop]: Abstraction has 3671 states and 4707 transitions. [2022-11-26 00:40:59,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 4707 transitions. [2022-11-26 00:40:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-26 00:40:59,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:59,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:59,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-26 00:40:59,408 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:40:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:59,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1140416929, now seen corresponding path program 1 times [2022-11-26 00:40:59,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:59,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121999573] [2022-11-26 00:40:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:59,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:59,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:59,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121999573] [2022-11-26 00:40:59,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121999573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:40:59,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:40:59,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:40:59,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792050565] [2022-11-26 00:40:59,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:40:59,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:40:59,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:59,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:40:59,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:40:59,600 INFO L87 Difference]: Start difference. First operand 3671 states and 4707 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:41:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:41:40,474 INFO L93 Difference]: Finished difference Result 14948 states and 19308 transitions. [2022-11-26 00:41:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:41:40,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-26 00:41:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:41:40,488 INFO L225 Difference]: With dead ends: 14948 [2022-11-26 00:41:40,489 INFO L226 Difference]: Without dead ends: 11426 [2022-11-26 00:41:40,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:41:40,493 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1188 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:41:40,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 2204 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:41:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11426 states. [2022-11-26 00:41:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11426 to 5203. [2022-11-26 00:41:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 1.2731641676278354) internal successors, (6623), 5202 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:41:58,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 6623 transitions. [2022-11-26 00:41:58,510 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 6623 transitions. Word has length 140 [2022-11-26 00:41:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:41:58,510 INFO L495 AbstractCegarLoop]: Abstraction has 5203 states and 6623 transitions. [2022-11-26 00:41:58,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:41:58,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 6623 transitions. [2022-11-26 00:41:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-26 00:41:58,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:41:58,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:41:58,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-26 00:41:58,511 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:41:58,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:41:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash -567668542, now seen corresponding path program 1 times [2022-11-26 00:41:58,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:41:58,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965491325] [2022-11-26 00:41:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:41:58,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:41:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:41:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:41:58,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:41:58,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965491325] [2022-11-26 00:41:58,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965491325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:41:58,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:41:58,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:41:58,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949420623] [2022-11-26 00:41:58,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:41:58,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:41:58,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:41:58,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:41:58,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:41:58,581 INFO L87 Difference]: Start difference. First operand 5203 states and 6623 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:42:17,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:42:17,345 INFO L93 Difference]: Finished difference Result 10259 states and 13085 transitions. [2022-11-26 00:42:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:42:17,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-11-26 00:42:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:42:17,352 INFO L225 Difference]: With dead ends: 10259 [2022-11-26 00:42:17,352 INFO L226 Difference]: Without dead ends: 5205 [2022-11-26 00:42:17,355 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:42:17,356 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 37 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:42:17,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 280 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:42:17,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2022-11-26 00:42:35,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 5203. [2022-11-26 00:42:35,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 1.2727797001153403) internal successors, (6621), 5202 states have internal predecessors, (6621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:42:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 6621 transitions. [2022-11-26 00:42:35,618 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 6621 transitions. Word has length 142 [2022-11-26 00:42:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:42:35,619 INFO L495 AbstractCegarLoop]: Abstraction has 5203 states and 6621 transitions. [2022-11-26 00:42:35,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:42:35,619 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 6621 transitions. [2022-11-26 00:42:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-26 00:42:35,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:42:35,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:42:35,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-26 00:42:35,620 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:42:35,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:42:35,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1397585046, now seen corresponding path program 1 times [2022-11-26 00:42:35,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:42:35,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512506778] [2022-11-26 00:42:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:42:35,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:42:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:42:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:35,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:42:35,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512506778] [2022-11-26 00:42:35,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512506778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:42:35,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:42:35,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:42:35,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90205287] [2022-11-26 00:42:35,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:42:35,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:42:35,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:42:35,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:42:35,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:42:35,686 INFO L87 Difference]: Start difference. First operand 5203 states and 6621 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:42:59,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:42:59,122 INFO L93 Difference]: Finished difference Result 11603 states and 14809 transitions. [2022-11-26 00:42:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:42:59,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-11-26 00:42:59,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:42:59,130 INFO L225 Difference]: With dead ends: 11603 [2022-11-26 00:42:59,130 INFO L226 Difference]: Without dead ends: 6549 [2022-11-26 00:42:59,134 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:42:59,134 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 95 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:42:59,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 268 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:42:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6549 states. [2022-11-26 00:43:22,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6549 to 6547. [2022-11-26 00:43:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 6546 states have (on average 1.265352887259395) internal successors, (8283), 6546 states have internal predecessors, (8283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 8283 transitions. [2022-11-26 00:43:22,284 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 8283 transitions. Word has length 142 [2022-11-26 00:43:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:22,284 INFO L495 AbstractCegarLoop]: Abstraction has 6547 states and 8283 transitions. [2022-11-26 00:43:22,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 8283 transitions. [2022-11-26 00:43:22,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-26 00:43:22,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:22,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:22,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-26 00:43:22,286 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:43:22,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:22,286 INFO L85 PathProgramCache]: Analyzing trace with hash -537646549, now seen corresponding path program 1 times [2022-11-26 00:43:22,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:22,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105146059] [2022-11-26 00:43:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:22,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:22,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:22,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105146059] [2022-11-26 00:43:22,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105146059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:22,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:22,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:43:22,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137609013] [2022-11-26 00:43:22,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:22,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:43:22,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:22,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:43:22,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:43:22,564 INFO L87 Difference]: Start difference. First operand 6547 states and 8283 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:57,456 INFO L93 Difference]: Finished difference Result 9198 states and 11521 transitions. [2022-11-26 00:43:57,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:43:57,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-11-26 00:43:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:57,467 INFO L225 Difference]: With dead ends: 9198 [2022-11-26 00:43:57,467 INFO L226 Difference]: Without dead ends: 9196 [2022-11-26 00:43:57,469 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:43:57,470 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 394 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:57,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 1123 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:57,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9196 states. [2022-11-26 00:44:21,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9196 to 6547. [2022-11-26 00:44:21,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 6546 states have (on average 1.2506874427131072) internal successors, (8187), 6546 states have internal predecessors, (8187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:44:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 8187 transitions. [2022-11-26 00:44:21,953 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 8187 transitions. Word has length 143 [2022-11-26 00:44:21,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:44:21,954 INFO L495 AbstractCegarLoop]: Abstraction has 6547 states and 8187 transitions. [2022-11-26 00:44:21,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:44:21,954 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 8187 transitions. [2022-11-26 00:44:21,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-26 00:44:21,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:44:21,955 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-11-26 00:44:21,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-26 00:44:21,956 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:44:21,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:44:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1062681457, now seen corresponding path program 1 times [2022-11-26 00:44:21,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:44:21,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730968289] [2022-11-26 00:44:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:44:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:44:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:44:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-26 00:44:22,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:44:22,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730968289] [2022-11-26 00:44:22,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730968289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:44:22,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:44:22,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:44:22,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101481228] [2022-11-26 00:44:22,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:44:22,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:44:22,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:44:22,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:44:22,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:44:22,283 INFO L87 Difference]: Start difference. First operand 6547 states and 8187 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:45:01,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:45:01,235 INFO L93 Difference]: Finished difference Result 16526 states and 20689 transitions. [2022-11-26 00:45:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:45:01,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-11-26 00:45:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:45:01,249 INFO L225 Difference]: With dead ends: 16526 [2022-11-26 00:45:01,249 INFO L226 Difference]: Without dead ends: 10113 [2022-11-26 00:45:01,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:45:01,254 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 451 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:45:01,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 466 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:45:01,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10113 states. [2022-11-26 00:45:25,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10113 to 6547. [2022-11-26 00:45:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 6546 states have (on average 1.2503819126183928) internal successors, (8185), 6546 states have internal predecessors, (8185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:45:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 8185 transitions. [2022-11-26 00:45:25,832 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 8185 transitions. Word has length 164 [2022-11-26 00:45:25,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:45:25,833 INFO L495 AbstractCegarLoop]: Abstraction has 6547 states and 8185 transitions. [2022-11-26 00:45:25,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:45:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 8185 transitions. [2022-11-26 00:45:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-26 00:45:25,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:45:25,835 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-11-26 00:45:25,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-26 00:45:25,835 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:45:25,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:45:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash 118748482, now seen corresponding path program 1 times [2022-11-26 00:45:25,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:45:25,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40889031] [2022-11-26 00:45:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:25,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:45:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:45:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-26 00:45:28,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:45:28,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40889031] [2022-11-26 00:45:28,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40889031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:45:28,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:45:28,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-26 00:45:28,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486773539] [2022-11-26 00:45:28,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:45:28,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-26 00:45:28,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:45:28,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-26 00:45:28,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=866, Unknown=0, NotChecked=0, Total=930 [2022-11-26 00:45:28,037 INFO L87 Difference]: Start difference. First operand 6547 states and 8185 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:21,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:21,318 INFO L93 Difference]: Finished difference Result 19396 states and 24292 transitions. [2022-11-26 00:46:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-26 00:46:21,318 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2022-11-26 00:46:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:21,336 INFO L225 Difference]: With dead ends: 19396 [2022-11-26 00:46:21,337 INFO L226 Difference]: Without dead ends: 12988 [2022-11-26 00:46:21,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=454, Invalid=2968, Unknown=0, NotChecked=0, Total=3422 [2022-11-26 00:46:21,344 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 772 mSDsluCounter, 3921 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 4098 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:21,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 4098 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 00:46:21,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12988 states. [2022-11-26 00:46:46,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12988 to 6567. [2022-11-26 00:46:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6567 states, 6566 states have (on average 1.2500761498629303) internal successors, (8208), 6566 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6567 states to 6567 states and 8208 transitions. [2022-11-26 00:46:46,462 INFO L78 Accepts]: Start accepts. Automaton has 6567 states and 8208 transitions. Word has length 166 [2022-11-26 00:46:46,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:46,463 INFO L495 AbstractCegarLoop]: Abstraction has 6567 states and 8208 transitions. [2022-11-26 00:46:46,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 6567 states and 8208 transitions. [2022-11-26 00:46:46,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-26 00:46:46,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:46,465 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-11-26 00:46:46,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-26 00:46:46,465 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-26 00:46:46,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:46,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1228044663, now seen corresponding path program 1 times [2022-11-26 00:46:46,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:46,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500568884] [2022-11-26 00:46:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:46,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:47:01,609 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:01,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:47:01,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500568884] [2022-11-26 00:47:01,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500568884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:47:01,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051128733] [2022-11-26 00:47:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:01,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:47:01,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:47:01,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:47:01,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c11ed02-cd76-495a-8808-f7e833b0a8ca/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:47:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:47:02,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 116 conjunts are in the unsatisfiable core [2022-11-26 00:47:02,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:56,884 INFO L328 TraceCheckSpWp]: Computing backward predicates...