./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7 --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 b7c220fedd5daa4b7bd4bc3bda2bd43ccc828cdccab93a1f1d73e2bd64ffc19c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:33:15,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:33:15,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:33:15,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:33:15,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:33:15,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:33:15,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:33:15,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:33:15,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:33:15,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:33:15,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:33:15,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:33:15,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:33:15,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:33:15,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:33:15,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:33:15,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:33:15,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:33:15,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:33:15,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:33:15,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:33:15,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:33:15,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:33:15,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:33:15,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:33:15,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:33:15,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:33:15,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:33:15,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:33:15,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:33:15,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:33:15,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:33:15,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:33:15,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:33:15,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:33:15,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:33:15,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:33:15,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:33:15,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:33:15,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:33:15,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:33:15,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:33:15,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:33:15,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:33:15,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:33:15,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:33:15,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:33:15,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:33:15,980 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:33:15,980 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:33:15,981 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:33:15,981 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:33:15,981 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:33:15,981 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:33:15,981 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:33:15,982 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:33:15,982 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:33:15,982 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:33:15,982 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:33:15,982 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:33:15,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:33:15,983 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:33:15,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:33:15,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:33:15,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:33:15,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:33:15,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:33:15,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:33:15,984 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:33:15,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:33:15,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:33:15,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:33:15,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:33:15,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:33:15,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:33:15,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:33:15,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:33:15,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:33:15,993 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:33:15,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:33:15,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:33:15,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:33:15,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:33:15,994 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7c220fedd5daa4b7bd4bc3bda2bd43ccc828cdccab93a1f1d73e2bd64ffc19c [2021-11-25 20:33:16,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:33:16,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:33:16,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:33:16,360 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:33:16,361 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:33:16,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 20:33:16,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/data/2b6f0c726/eaf1014c76d5413fa42d92996d3eee1e/FLAGc1adf3578 [2021-11-25 20:33:17,288 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:33:17,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 20:33:17,342 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/data/2b6f0c726/eaf1014c76d5413fa42d92996d3eee1e/FLAGc1adf3578 [2021-11-25 20:33:17,760 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/data/2b6f0c726/eaf1014c76d5413fa42d92996d3eee1e [2021-11-25 20:33:17,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:33:17,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:33:17,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:33:17,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:33:17,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:33:17,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:33:17" (1/1) ... [2021-11-25 20:33:17,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7772fe07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:17, skipping insertion in model container [2021-11-25 20:33:17,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:33:17" (1/1) ... [2021-11-25 20:33:17,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:33:18,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:33:18,956 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[69402,69415] [2021-11-25 20:33:19,097 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[100988,101001] [2021-11-25 20:33:19,156 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[116766,116779] [2021-11-25 20:33:19,186 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[124651,124664] [2021-11-25 20:33:19,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[128577,128590] [2021-11-25 20:33:19,217 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132299,132312] [2021-11-25 20:33:19,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[163377,163390] [2021-11-25 20:33:19,411 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[178940,178953] [2021-11-25 20:33:19,439 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[186820,186833] [2021-11-25 20:33:19,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[190741,190754] [2021-11-25 20:33:19,470 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[194458,194471] [2021-11-25 20:33:19,533 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[211203,211216] [2021-11-25 20:33:19,563 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[219083,219096] [2021-11-25 20:33:19,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[223004,223017] [2021-11-25 20:33:19,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[226721,226734] [2021-11-25 20:33:19,614 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231221,231234] [2021-11-25 20:33:19,628 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[234989,235002] [2021-11-25 20:33:19,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[238910,238923] [2021-11-25 20:33:19,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[242627,242640] [2021-11-25 20:33:19,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[246748,246761] [2021-11-25 20:33:19,690 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[250481,250494] [2021-11-25 20:33:19,706 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[254398,254411] [2021-11-25 20:33:19,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:33:19,785 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:33:20,093 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[69402,69415] [2021-11-25 20:33:20,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[100988,101001] [2021-11-25 20:33:20,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[116766,116779] [2021-11-25 20:33:20,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[124651,124664] [2021-11-25 20:33:20,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[128577,128590] [2021-11-25 20:33:20,284 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132299,132312] [2021-11-25 20:33:20,397 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[163377,163390] [2021-11-25 20:33:20,446 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[178940,178953] [2021-11-25 20:33:20,470 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[186820,186833] [2021-11-25 20:33:20,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[190741,190754] [2021-11-25 20:33:20,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[194458,194471] [2021-11-25 20:33:20,540 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[211203,211216] [2021-11-25 20:33:20,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[219083,219096] [2021-11-25 20:33:20,577 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[223004,223017] [2021-11-25 20:33:20,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[226721,226734] [2021-11-25 20:33:20,603 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231221,231234] [2021-11-25 20:33:20,616 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[234989,235002] [2021-11-25 20:33:20,635 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[238910,238923] [2021-11-25 20:33:20,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[242627,242640] [2021-11-25 20:33:20,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[246748,246761] [2021-11-25 20:33:20,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[250481,250494] [2021-11-25 20:33:20,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[254398,254411] [2021-11-25 20:33:20,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:33:20,751 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:33:20,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20 WrapperNode [2021-11-25 20:33:20,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:33:20,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:33:20,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:33:20,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:33:20,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20" (1/1) ... [2021-11-25 20:33:20,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20" (1/1) ... [2021-11-25 20:33:21,033 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11455 [2021-11-25 20:33:21,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:33:21,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:33:21,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:33:21,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:33:21,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20" (1/1) ... [2021-11-25 20:33:21,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20" (1/1) ... [2021-11-25 20:33:21,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20" (1/1) ... [2021-11-25 20:33:21,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20" (1/1) ... [2021-11-25 20:33:21,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20" (1/1) ... [2021-11-25 20:33:21,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20" (1/1) ... [2021-11-25 20:33:21,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20" (1/1) ... [2021-11-25 20:33:21,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:33:21,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:33:21,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:33:21,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:33:21,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20" (1/1) ... [2021-11-25 20:33:21,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:33:21,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:33:21,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:33:21,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:33:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:33:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:33:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:33:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:33:21,873 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:33:21,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:33:26,878 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:33:27,300 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:33:27,300 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:33:27,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:33:27 BoogieIcfgContainer [2021-11-25 20:33:27,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:33:27,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:33:27,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:33:27,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:33:27,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:33:17" (1/3) ... [2021-11-25 20:33:27,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc42184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:33:27, skipping insertion in model container [2021-11-25 20:33:27,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:20" (2/3) ... [2021-11-25 20:33:27,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc42184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:33:27, skipping insertion in model container [2021-11-25 20:33:27,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:33:27" (3/3) ... [2021-11-25 20:33:27,321 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 20:33:27,329 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:33:27,329 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-11-25 20:33:27,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:33:27,414 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:33:27,414 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-11-25 20:33:27,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 2311 states, 2288 states have (on average 1.8229895104895104) internal successors, (4171), 2310 states have internal predecessors, (4171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 20:33:27,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:27,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:27,507 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:27,512 INFO L85 PathProgramCache]: Analyzing trace with hash 474104121, now seen corresponding path program 1 times [2021-11-25 20:33:27,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:27,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733185619] [2021-11-25 20:33:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:27,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:28,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:28,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733185619] [2021-11-25 20:33:28,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733185619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:28,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:28,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:33:28,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388695490] [2021-11-25 20:33:28,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:28,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:33:28,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:28,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:33:28,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:33:28,122 INFO L87 Difference]: Start difference. First operand has 2311 states, 2288 states have (on average 1.8229895104895104) internal successors, (4171), 2310 states have internal predecessors, (4171), 0 states have call successors, (0), 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) [2021-11-25 20:33:30,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:30,042 INFO L93 Difference]: Finished difference Result 2737 states and 4863 transitions. [2021-11-25 20:33:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:33:30,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-25 20:33:30,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:30,082 INFO L225 Difference]: With dead ends: 2737 [2021-11-25 20:33:30,082 INFO L226 Difference]: Without dead ends: 1585 [2021-11-25 20:33:30,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:33:30,102 INFO L933 BasicCegarLoop]: 1484 mSDtfsCounter, 8232 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8232 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:30,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8232 Valid, 1524 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:33:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-11-25 20:33:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1585. [2021-11-25 20:33:30,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1563 states have (on average 1.3122200895713372) internal successors, (2051), 1584 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2051 transitions. [2021-11-25 20:33:30,236 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2051 transitions. Word has length 85 [2021-11-25 20:33:30,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:30,237 INFO L470 AbstractCegarLoop]: Abstraction has 1585 states and 2051 transitions. [2021-11-25 20:33:30,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2051 transitions. [2021-11-25 20:33:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 20:33:30,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:30,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:30,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:33:30,244 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:30,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:30,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1379625602, now seen corresponding path program 1 times [2021-11-25 20:33:30,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:30,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190312629] [2021-11-25 20:33:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:30,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:30,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:30,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190312629] [2021-11-25 20:33:30,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190312629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:30,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:30,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:33:30,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097854031] [2021-11-25 20:33:30,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:30,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:33:30,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:30,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:33:30,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:33:30,542 INFO L87 Difference]: Start difference. First operand 1585 states and 2051 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:31,931 INFO L93 Difference]: Finished difference Result 2213 states and 2882 transitions. [2021-11-25 20:33:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:33:31,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-25 20:33:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:31,945 INFO L225 Difference]: With dead ends: 2213 [2021-11-25 20:33:31,945 INFO L226 Difference]: Without dead ends: 1457 [2021-11-25 20:33:31,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:33:31,955 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 5518 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5518 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:31,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5518 Valid, 811 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 20:33:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-25 20:33:32,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1457. [2021-11-25 20:33:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1435 states have (on average 1.3282229965156795) internal successors, (1906), 1456 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1906 transitions. [2021-11-25 20:33:32,033 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1906 transitions. Word has length 85 [2021-11-25 20:33:32,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:32,034 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1906 transitions. [2021-11-25 20:33:32,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:32,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1906 transitions. [2021-11-25 20:33:32,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 20:33:32,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:32,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:32,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:33:32,040 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:32,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash -546397045, now seen corresponding path program 1 times [2021-11-25 20:33:32,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:32,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433598891] [2021-11-25 20:33:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:32,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:32,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:32,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433598891] [2021-11-25 20:33:32,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433598891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:32,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:32,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:33:32,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596043241] [2021-11-25 20:33:32,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:32,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:33:32,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:32,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:33:32,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:33:32,164 INFO L87 Difference]: Start difference. First operand 1457 states and 1906 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:33,242 INFO L93 Difference]: Finished difference Result 1957 states and 2560 transitions. [2021-11-25 20:33:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:33:33,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-25 20:33:33,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:33,251 INFO L225 Difference]: With dead ends: 1957 [2021-11-25 20:33:33,252 INFO L226 Difference]: Without dead ends: 1217 [2021-11-25 20:33:33,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:33:33,257 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 4741 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4741 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:33,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4741 Valid, 733 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:33:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-11-25 20:33:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2021-11-25 20:33:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1195 states have (on average 1.3464435146443514) internal successors, (1609), 1216 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1609 transitions. [2021-11-25 20:33:33,338 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1609 transitions. Word has length 85 [2021-11-25 20:33:33,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:33,339 INFO L470 AbstractCegarLoop]: Abstraction has 1217 states and 1609 transitions. [2021-11-25 20:33:33,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:33,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1609 transitions. [2021-11-25 20:33:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 20:33:33,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:33,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:33,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:33:33,346 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:33,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash 828162727, now seen corresponding path program 1 times [2021-11-25 20:33:33,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:33,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070741399] [2021-11-25 20:33:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:33,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:33,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:33,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070741399] [2021-11-25 20:33:33,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070741399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:33,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:33,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:33:33,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594619820] [2021-11-25 20:33:33,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:33,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:33:33,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:33,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:33:33,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:33:33,481 INFO L87 Difference]: Start difference. First operand 1217 states and 1609 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:34,390 INFO L93 Difference]: Finished difference Result 1752 states and 2322 transitions. [2021-11-25 20:33:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:33:34,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-25 20:33:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:34,396 INFO L225 Difference]: With dead ends: 1752 [2021-11-25 20:33:34,396 INFO L226 Difference]: Without dead ends: 1126 [2021-11-25 20:33:34,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:33:34,398 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 4439 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4439 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:34,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4439 Valid, 692 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:33:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-11-25 20:33:34,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2021-11-25 20:33:34,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1104 states have (on average 1.3596014492753623) internal successors, (1501), 1125 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1501 transitions. [2021-11-25 20:33:34,451 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1501 transitions. Word has length 86 [2021-11-25 20:33:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:34,452 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1501 transitions. [2021-11-25 20:33:34,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:34,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1501 transitions. [2021-11-25 20:33:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 20:33:34,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:34,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:34,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:33:34,467 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:34,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:34,468 INFO L85 PathProgramCache]: Analyzing trace with hash -379387896, now seen corresponding path program 1 times [2021-11-25 20:33:34,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:34,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7863592] [2021-11-25 20:33:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:34,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:34,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:34,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7863592] [2021-11-25 20:33:34,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7863592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:34,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:34,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:33:34,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80673353] [2021-11-25 20:33:34,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:34,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:33:34,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:34,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:33:34,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:33:34,622 INFO L87 Difference]: Start difference. First operand 1126 states and 1501 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:35,326 INFO L93 Difference]: Finished difference Result 1418 states and 1849 transitions. [2021-11-25 20:33:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:33:35,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-25 20:33:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:35,332 INFO L225 Difference]: With dead ends: 1418 [2021-11-25 20:33:35,332 INFO L226 Difference]: Without dead ends: 861 [2021-11-25 20:33:35,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:33:35,334 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 3296 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:35,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3296 Valid, 547 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:33:35,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-11-25 20:33:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2021-11-25 20:33:35,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 839 states have (on average 1.3623361144219308) internal successors, (1143), 860 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) [2021-11-25 20:33:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1143 transitions. [2021-11-25 20:33:35,382 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1143 transitions. Word has length 87 [2021-11-25 20:33:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:35,382 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1143 transitions. [2021-11-25 20:33:35,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1143 transitions. [2021-11-25 20:33:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 20:33:35,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:35,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:35,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:33:35,386 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:35,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:35,387 INFO L85 PathProgramCache]: Analyzing trace with hash -211366857, now seen corresponding path program 1 times [2021-11-25 20:33:35,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:35,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541228625] [2021-11-25 20:33:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:35,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:35,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:35,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541228625] [2021-11-25 20:33:35,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541228625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:35,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:35,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:33:35,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342307707] [2021-11-25 20:33:35,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:35,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:33:35,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:35,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:33:35,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:33:35,501 INFO L87 Difference]: Start difference. First operand 861 states and 1143 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:35,988 INFO L93 Difference]: Finished difference Result 1023 states and 1312 transitions. [2021-11-25 20:33:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:33:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-25 20:33:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:35,992 INFO L225 Difference]: With dead ends: 1023 [2021-11-25 20:33:35,992 INFO L226 Difference]: Without dead ends: 602 [2021-11-25 20:33:35,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:33:35,995 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 2223 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:35,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2223 Valid, 425 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:33:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-25 20:33:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2021-11-25 20:33:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.360344827586207) internal successors, (789), 601 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 789 transitions. [2021-11-25 20:33:36,029 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 789 transitions. Word has length 88 [2021-11-25 20:33:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:36,031 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 789 transitions. [2021-11-25 20:33:36,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 789 transitions. [2021-11-25 20:33:36,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 20:33:36,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:36,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:36,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:33:36,034 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:36,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:36,034 INFO L85 PathProgramCache]: Analyzing trace with hash 328508839, now seen corresponding path program 1 times [2021-11-25 20:33:36,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:36,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065525670] [2021-11-25 20:33:36,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:36,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:36,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:36,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065525670] [2021-11-25 20:33:36,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065525670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:36,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:36,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:33:36,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635302086] [2021-11-25 20:33:36,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:36,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:33:36,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:33:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:33:36,293 INFO L87 Difference]: Start difference. First operand 602 states and 789 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:37,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:37,913 INFO L93 Difference]: Finished difference Result 1181 states and 1553 transitions. [2021-11-25 20:33:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:33:37,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-25 20:33:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:37,920 INFO L225 Difference]: With dead ends: 1181 [2021-11-25 20:33:37,920 INFO L226 Difference]: Without dead ends: 1020 [2021-11-25 20:33:37,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:33:37,923 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 2804 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2804 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:37,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2804 Valid, 2460 Invalid, 2188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:33:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-11-25 20:33:37,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 602. [2021-11-25 20:33:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3586206896551725) internal successors, (788), 601 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 788 transitions. [2021-11-25 20:33:37,973 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 788 transitions. Word has length 89 [2021-11-25 20:33:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:37,973 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 788 transitions. [2021-11-25 20:33:37,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:37,976 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 788 transitions. [2021-11-25 20:33:37,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 20:33:37,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:37,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:37,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:33:37,979 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:37,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1669555108, now seen corresponding path program 1 times [2021-11-25 20:33:37,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:37,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181289505] [2021-11-25 20:33:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:37,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:38,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:38,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181289505] [2021-11-25 20:33:38,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181289505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:38,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:38,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:33:38,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589085324] [2021-11-25 20:33:38,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:38,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:33:38,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:38,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:33:38,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:33:38,173 INFO L87 Difference]: Start difference. First operand 602 states and 788 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:39,792 INFO L93 Difference]: Finished difference Result 1108 states and 1456 transitions. [2021-11-25 20:33:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:33:39,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-25 20:33:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:39,799 INFO L225 Difference]: With dead ends: 1108 [2021-11-25 20:33:39,799 INFO L226 Difference]: Without dead ends: 1011 [2021-11-25 20:33:39,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:33:39,800 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 2638 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:39,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2638 Valid, 2927 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 20:33:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-11-25 20:33:39,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 602. [2021-11-25 20:33:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.356896551724138) internal successors, (787), 601 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 787 transitions. [2021-11-25 20:33:39,850 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 787 transitions. Word has length 89 [2021-11-25 20:33:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:39,850 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 787 transitions. [2021-11-25 20:33:39,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 787 transitions. [2021-11-25 20:33:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 20:33:39,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:39,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:39,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:33:39,853 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:39,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:39,854 INFO L85 PathProgramCache]: Analyzing trace with hash 231777635, now seen corresponding path program 1 times [2021-11-25 20:33:39,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:39,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122759213] [2021-11-25 20:33:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:39,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:40,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:40,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122759213] [2021-11-25 20:33:40,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122759213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:40,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:40,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:33:40,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602061392] [2021-11-25 20:33:40,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:40,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:33:40,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:40,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:33:40,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:33:40,027 INFO L87 Difference]: Start difference. First operand 602 states and 787 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:41,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:41,010 INFO L93 Difference]: Finished difference Result 1109 states and 1399 transitions. [2021-11-25 20:33:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:33:41,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-25 20:33:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:41,015 INFO L225 Difference]: With dead ends: 1109 [2021-11-25 20:33:41,015 INFO L226 Difference]: Without dead ends: 790 [2021-11-25 20:33:41,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:33:41,018 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 3364 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3364 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:41,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3364 Valid, 915 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:33:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-25 20:33:41,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 602. [2021-11-25 20:33:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3551724137931034) internal successors, (786), 601 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 786 transitions. [2021-11-25 20:33:41,070 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 786 transitions. Word has length 89 [2021-11-25 20:33:41,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:41,071 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 786 transitions. [2021-11-25 20:33:41,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 786 transitions. [2021-11-25 20:33:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 20:33:41,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:41,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:41,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:33:41,077 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:41,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:41,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1427714440, now seen corresponding path program 1 times [2021-11-25 20:33:41,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:41,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096542768] [2021-11-25 20:33:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:41,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:41,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:41,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096542768] [2021-11-25 20:33:41,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096542768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:41,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:41,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:33:41,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908943254] [2021-11-25 20:33:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:41,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:33:41,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:41,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:33:41,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:33:41,265 INFO L87 Difference]: Start difference. First operand 602 states and 786 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) [2021-11-25 20:33:42,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:42,820 INFO L93 Difference]: Finished difference Result 1080 states and 1407 transitions. [2021-11-25 20:33:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:33:42,821 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 [2021-11-25 20:33:42,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:42,827 INFO L225 Difference]: With dead ends: 1080 [2021-11-25 20:33:42,827 INFO L226 Difference]: Without dead ends: 1008 [2021-11-25 20:33:42,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:33:42,829 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 2533 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:42,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2533 Valid, 2689 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:33:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-25 20:33:42,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 602. [2021-11-25 20:33:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.353448275862069) internal successors, (785), 601 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 785 transitions. [2021-11-25 20:33:42,884 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 785 transitions. Word has length 91 [2021-11-25 20:33:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:42,884 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 785 transitions. [2021-11-25 20:33:42,885 INFO L471 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) [2021-11-25 20:33:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 785 transitions. [2021-11-25 20:33:42,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 20:33:42,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:42,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:42,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:33:42,888 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:42,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:42,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1221078273, now seen corresponding path program 1 times [2021-11-25 20:33:42,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:42,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418687215] [2021-11-25 20:33:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:42,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:43,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:43,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418687215] [2021-11-25 20:33:43,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418687215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:43,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:43,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:33:43,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774627158] [2021-11-25 20:33:43,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:43,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:33:43,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:43,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:33:43,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:33:43,071 INFO L87 Difference]: Start difference. First operand 602 states and 785 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) [2021-11-25 20:33:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:44,623 INFO L93 Difference]: Finished difference Result 1122 states and 1464 transitions. [2021-11-25 20:33:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:33:44,624 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 [2021-11-25 20:33:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:44,630 INFO L225 Difference]: With dead ends: 1122 [2021-11-25 20:33:44,630 INFO L226 Difference]: Without dead ends: 1011 [2021-11-25 20:33:44,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:33:44,631 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1841 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:44,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1841 Valid, 2948 Invalid, 2398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:33:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-11-25 20:33:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 602. [2021-11-25 20:33:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3517241379310345) internal successors, (784), 601 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 784 transitions. [2021-11-25 20:33:44,691 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 784 transitions. Word has length 91 [2021-11-25 20:33:44,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:44,691 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 784 transitions. [2021-11-25 20:33:44,692 INFO L471 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) [2021-11-25 20:33:44,692 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 784 transitions. [2021-11-25 20:33:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 20:33:44,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:44,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:44,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:33:44,695 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:44,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash -982216986, now seen corresponding path program 1 times [2021-11-25 20:33:44,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:44,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742764118] [2021-11-25 20:33:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:44,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:44,908 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:44,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742764118] [2021-11-25 20:33:44,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742764118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:44,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:44,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 20:33:44,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736384168] [2021-11-25 20:33:44,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:44,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 20:33:44,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:44,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 20:33:44,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:33:44,911 INFO L87 Difference]: Start difference. First operand 602 states and 784 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) [2021-11-25 20:33:46,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:46,914 INFO L93 Difference]: Finished difference Result 1277 states and 1662 transitions. [2021-11-25 20:33:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 20:33:46,914 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 [2021-11-25 20:33:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:46,920 INFO L225 Difference]: With dead ends: 1277 [2021-11-25 20:33:46,921 INFO L226 Difference]: Without dead ends: 1082 [2021-11-25 20:33:46,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:33:46,922 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 3084 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3084 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 2992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:46,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3084 Valid, 3290 Invalid, 2992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 20:33:46,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2021-11-25 20:33:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 602. [2021-11-25 20:33:46,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.35) internal successors, (783), 601 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 783 transitions. [2021-11-25 20:33:46,985 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 783 transitions. Word has length 91 [2021-11-25 20:33:46,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:46,986 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 783 transitions. [2021-11-25 20:33:46,986 INFO L471 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) [2021-11-25 20:33:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 783 transitions. [2021-11-25 20:33:46,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 20:33:46,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:46,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:46,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:33:46,989 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:46,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:46,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1988895487, now seen corresponding path program 1 times [2021-11-25 20:33:46,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:46,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745902442] [2021-11-25 20:33:46,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:46,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:47,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:47,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745902442] [2021-11-25 20:33:47,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745902442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:47,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:47,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:33:47,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012465627] [2021-11-25 20:33:47,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:47,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:33:47,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:47,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:33:47,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:33:47,203 INFO L87 Difference]: Start difference. First operand 602 states and 783 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) [2021-11-25 20:33:49,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:49,527 INFO L93 Difference]: Finished difference Result 1395 states and 1823 transitions. [2021-11-25 20:33:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:33:49,527 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 [2021-11-25 20:33:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:49,533 INFO L225 Difference]: With dead ends: 1395 [2021-11-25 20:33:49,533 INFO L226 Difference]: Without dead ends: 1323 [2021-11-25 20:33:49,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:33:49,534 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 5242 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 2560 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5242 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 2560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:49,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5242 Valid, 2646 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 2560 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:33:49,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2021-11-25 20:33:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 606. [2021-11-25 20:33:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 584 states have (on average 1.3476027397260273) internal successors, (787), 605 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 787 transitions. [2021-11-25 20:33:49,614 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 787 transitions. Word has length 91 [2021-11-25 20:33:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:49,614 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 787 transitions. [2021-11-25 20:33:49,615 INFO L471 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) [2021-11-25 20:33:49,615 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 787 transitions. [2021-11-25 20:33:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 20:33:49,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:49,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:49,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:33:49,617 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:49,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:49,618 INFO L85 PathProgramCache]: Analyzing trace with hash 646324256, now seen corresponding path program 1 times [2021-11-25 20:33:49,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:49,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86298257] [2021-11-25 20:33:49,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:49,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:49,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:49,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86298257] [2021-11-25 20:33:49,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86298257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:49,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:49,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:33:49,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477026971] [2021-11-25 20:33:49,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:49,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:33:49,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:49,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:33:49,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:33:49,767 INFO L87 Difference]: Start difference. First operand 606 states and 787 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) [2021-11-25 20:33:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:51,257 INFO L93 Difference]: Finished difference Result 1075 states and 1399 transitions. [2021-11-25 20:33:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:33:51,266 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 [2021-11-25 20:33:51,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:51,270 INFO L225 Difference]: With dead ends: 1075 [2021-11-25 20:33:51,270 INFO L226 Difference]: Without dead ends: 1008 [2021-11-25 20:33:51,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:33:51,272 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 2539 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:51,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2539 Valid, 2802 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 20:33:51,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-25 20:33:51,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 606. [2021-11-25 20:33:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 584 states have (on average 1.345890410958904) internal successors, (786), 605 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 786 transitions. [2021-11-25 20:33:51,351 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 786 transitions. Word has length 91 [2021-11-25 20:33:51,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:51,351 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 786 transitions. [2021-11-25 20:33:51,352 INFO L471 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) [2021-11-25 20:33:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 786 transitions. [2021-11-25 20:33:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 20:33:51,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:51,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:51,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:33:51,357 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:51,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:51,357 INFO L85 PathProgramCache]: Analyzing trace with hash 850721804, now seen corresponding path program 1 times [2021-11-25 20:33:51,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:51,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949195397] [2021-11-25 20:33:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:51,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:51,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:51,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949195397] [2021-11-25 20:33:51,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949195397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:51,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:51,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:33:51,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038748001] [2021-11-25 20:33:51,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:51,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:33:51,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:51,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:33:51,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:33:51,511 INFO L87 Difference]: Start difference. First operand 606 states and 786 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) [2021-11-25 20:33:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:52,805 INFO L93 Difference]: Finished difference Result 1080 states and 1403 transitions. [2021-11-25 20:33:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:33:52,805 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 [2021-11-25 20:33:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:52,810 INFO L225 Difference]: With dead ends: 1080 [2021-11-25 20:33:52,810 INFO L226 Difference]: Without dead ends: 1008 [2021-11-25 20:33:52,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:33:52,811 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 2511 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 2377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:52,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2511 Valid, 2820 Invalid, 2377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 20:33:52,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-25 20:33:52,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 606. [2021-11-25 20:33:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 584 states have (on average 1.3441780821917808) internal successors, (785), 605 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:52,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 785 transitions. [2021-11-25 20:33:52,889 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 785 transitions. Word has length 91 [2021-11-25 20:33:52,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:52,890 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 785 transitions. [2021-11-25 20:33:52,890 INFO L471 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) [2021-11-25 20:33:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 785 transitions. [2021-11-25 20:33:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 20:33:52,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:52,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:52,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:33:52,893 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:52,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:52,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2041192084, now seen corresponding path program 1 times [2021-11-25 20:33:52,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:52,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937969747] [2021-11-25 20:33:52,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:52,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:53,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:53,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937969747] [2021-11-25 20:33:53,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937969747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:53,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:53,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:33:53,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693218796] [2021-11-25 20:33:53,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:53,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:33:53,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:33:53,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:33:53,125 INFO L87 Difference]: Start difference. First operand 606 states and 785 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) [2021-11-25 20:33:55,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:55,901 INFO L93 Difference]: Finished difference Result 1504 states and 1968 transitions. [2021-11-25 20:33:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:33:55,906 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 [2021-11-25 20:33:55,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:55,913 INFO L225 Difference]: With dead ends: 1504 [2021-11-25 20:33:55,913 INFO L226 Difference]: Without dead ends: 1393 [2021-11-25 20:33:55,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:33:55,915 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 4790 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 3222 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4790 SdHoareTripleChecker+Valid, 3527 SdHoareTripleChecker+Invalid, 3687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 3222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:55,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4790 Valid, 3527 Invalid, 3687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 3222 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 20:33:55,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-11-25 20:33:56,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 610. [2021-11-25 20:33:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 588 states have (on average 1.3418367346938775) internal successors, (789), 609 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 789 transitions. [2021-11-25 20:33:56,009 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 789 transitions. Word has length 91 [2021-11-25 20:33:56,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:56,010 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 789 transitions. [2021-11-25 20:33:56,010 INFO L471 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) [2021-11-25 20:33:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 789 transitions. [2021-11-25 20:33:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-25 20:33:56,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:56,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:56,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 20:33:56,013 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:56,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:56,014 INFO L85 PathProgramCache]: Analyzing trace with hash 119251772, now seen corresponding path program 1 times [2021-11-25 20:33:56,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:56,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813382043] [2021-11-25 20:33:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:56,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:56,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:56,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813382043] [2021-11-25 20:33:56,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813382043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:56,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:56,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:33:56,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266747993] [2021-11-25 20:33:56,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:56,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:33:56,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:56,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:33:56,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:33:56,156 INFO L87 Difference]: Start difference. First operand 610 states and 789 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:57,474 INFO L93 Difference]: Finished difference Result 1126 states and 1465 transitions. [2021-11-25 20:33:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:33:57,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-25 20:33:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:57,480 INFO L225 Difference]: With dead ends: 1126 [2021-11-25 20:33:57,480 INFO L226 Difference]: Without dead ends: 1015 [2021-11-25 20:33:57,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:33:57,482 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1825 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:57,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 2757 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 20:33:57,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-11-25 20:33:57,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 606. [2021-11-25 20:33:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 584 states have (on average 1.3424657534246576) internal successors, (784), 605 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 784 transitions. [2021-11-25 20:33:57,571 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 784 transitions. Word has length 92 [2021-11-25 20:33:57,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:57,572 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 784 transitions. [2021-11-25 20:33:57,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 784 transitions. [2021-11-25 20:33:57,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-25 20:33:57,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:57,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:57,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 20:33:57,575 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:57,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1082142256, now seen corresponding path program 1 times [2021-11-25 20:33:57,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:57,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722079638] [2021-11-25 20:33:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:57,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:57,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:57,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722079638] [2021-11-25 20:33:57,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722079638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:57,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:57,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:33:57,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917183738] [2021-11-25 20:33:57,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:57,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:33:57,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:57,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:33:57,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:33:57,703 INFO L87 Difference]: Start difference. First operand 606 states and 784 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:59,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:59,091 INFO L93 Difference]: Finished difference Result 1080 states and 1400 transitions. [2021-11-25 20:33:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:33:59,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-25 20:33:59,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:59,099 INFO L225 Difference]: With dead ends: 1080 [2021-11-25 20:33:59,099 INFO L226 Difference]: Without dead ends: 1008 [2021-11-25 20:33:59,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:33:59,101 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 2817 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:59,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2817 Valid, 2505 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 20:33:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-25 20:33:59,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 602. [2021-11-25 20:33:59,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3431034482758621) internal successors, (779), 601 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 779 transitions. [2021-11-25 20:33:59,197 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 779 transitions. Word has length 92 [2021-11-25 20:33:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:59,198 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 779 transitions. [2021-11-25 20:33:59,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:33:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 779 transitions. [2021-11-25 20:33:59,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:33:59,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:59,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:59,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 20:33:59,202 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:33:59,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:59,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1474627327, now seen corresponding path program 1 times [2021-11-25 20:33:59,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:59,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074639267] [2021-11-25 20:33:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:59,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:59,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:59,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074639267] [2021-11-25 20:33:59,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074639267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:59,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:59,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:33:59,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107796524] [2021-11-25 20:33:59,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:59,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:33:59,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:59,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:33:59,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:33:59,358 INFO L87 Difference]: Start difference. First operand 602 states and 779 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:00,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:00,674 INFO L93 Difference]: Finished difference Result 1089 states and 1408 transitions. [2021-11-25 20:34:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:34:00,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:00,695 INFO L225 Difference]: With dead ends: 1089 [2021-11-25 20:34:00,695 INFO L226 Difference]: Without dead ends: 1008 [2021-11-25 20:34:00,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:34:00,697 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 2662 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2662 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:00,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2662 Valid, 2999 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 20:34:00,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-25 20:34:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 602. [2021-11-25 20:34:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3413793103448275) internal successors, (778), 601 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 778 transitions. [2021-11-25 20:34:00,790 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 778 transitions. Word has length 93 [2021-11-25 20:34:00,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:00,790 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 778 transitions. [2021-11-25 20:34:00,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:00,790 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 778 transitions. [2021-11-25 20:34:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:00,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:00,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:00,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 20:34:00,793 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:00,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash -281811597, now seen corresponding path program 1 times [2021-11-25 20:34:00,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:00,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908603862] [2021-11-25 20:34:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:00,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:00,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:00,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908603862] [2021-11-25 20:34:00,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908603862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:00,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:00,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:00,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435577702] [2021-11-25 20:34:00,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:00,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:00,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:00,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:00,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:00,917 INFO L87 Difference]: Start difference. First operand 602 states and 778 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:02,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:02,177 INFO L93 Difference]: Finished difference Result 1051 states and 1353 transitions. [2021-11-25 20:34:02,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:02,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:02,182 INFO L225 Difference]: With dead ends: 1051 [2021-11-25 20:34:02,183 INFO L226 Difference]: Without dead ends: 992 [2021-11-25 20:34:02,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:34:02,184 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 2833 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2833 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:02,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2833 Valid, 2304 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:34:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-25 20:34:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 602. [2021-11-25 20:34:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.339655172413793) internal successors, (777), 601 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 777 transitions. [2021-11-25 20:34:02,306 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 777 transitions. Word has length 93 [2021-11-25 20:34:02,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:02,307 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 777 transitions. [2021-11-25 20:34:02,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 777 transitions. [2021-11-25 20:34:02,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:02,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:02,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:02,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 20:34:02,310 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:02,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:02,311 INFO L85 PathProgramCache]: Analyzing trace with hash -610424553, now seen corresponding path program 1 times [2021-11-25 20:34:02,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:02,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787380542] [2021-11-25 20:34:02,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:02,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:02,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:02,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787380542] [2021-11-25 20:34:02,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787380542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:02,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:02,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:02,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380715141] [2021-11-25 20:34:02,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:02,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:02,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:02,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:02,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:02,449 INFO L87 Difference]: Start difference. First operand 602 states and 777 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:03,902 INFO L93 Difference]: Finished difference Result 1137 states and 1468 transitions. [2021-11-25 20:34:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:34:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:03,907 INFO L225 Difference]: With dead ends: 1137 [2021-11-25 20:34:03,907 INFO L226 Difference]: Without dead ends: 1011 [2021-11-25 20:34:03,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:34:03,908 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 1823 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:03,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 3292 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 20:34:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-11-25 20:34:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 602. [2021-11-25 20:34:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3379310344827586) internal successors, (776), 601 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 776 transitions. [2021-11-25 20:34:04,010 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 776 transitions. Word has length 93 [2021-11-25 20:34:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:04,010 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 776 transitions. [2021-11-25 20:34:04,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 776 transitions. [2021-11-25 20:34:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:04,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:04,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:04,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 20:34:04,013 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:04,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:04,014 INFO L85 PathProgramCache]: Analyzing trace with hash 410318044, now seen corresponding path program 1 times [2021-11-25 20:34:04,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:04,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87787763] [2021-11-25 20:34:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:04,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:04,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:04,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87787763] [2021-11-25 20:34:04,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87787763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:04,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:04,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:04,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479093511] [2021-11-25 20:34:04,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:04,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:04,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:04,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:04,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:04,140 INFO L87 Difference]: Start difference. First operand 602 states and 776 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:05,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:05,519 INFO L93 Difference]: Finished difference Result 1051 states and 1350 transitions. [2021-11-25 20:34:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:05,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:05,527 INFO L225 Difference]: With dead ends: 1051 [2021-11-25 20:34:05,527 INFO L226 Difference]: Without dead ends: 992 [2021-11-25 20:34:05,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:34:05,529 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 2824 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:05,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2824 Valid, 2306 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 20:34:05,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-25 20:34:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 602. [2021-11-25 20:34:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3362068965517242) internal successors, (775), 601 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:05,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 775 transitions. [2021-11-25 20:34:05,629 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 775 transitions. Word has length 93 [2021-11-25 20:34:05,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:05,630 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 775 transitions. [2021-11-25 20:34:05,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 775 transitions. [2021-11-25 20:34:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:05,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:05,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:05,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 20:34:05,632 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:05,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:05,633 INFO L85 PathProgramCache]: Analyzing trace with hash -603748374, now seen corresponding path program 1 times [2021-11-25 20:34:05,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:05,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524963981] [2021-11-25 20:34:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:05,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:05,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:05,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524963981] [2021-11-25 20:34:05,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524963981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:05,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:05,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:05,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681155029] [2021-11-25 20:34:05,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:05,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:05,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:05,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:05,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:05,842 INFO L87 Difference]: Start difference. First operand 602 states and 775 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:08,288 INFO L93 Difference]: Finished difference Result 1412 states and 1826 transitions. [2021-11-25 20:34:08,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:34:08,288 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:08,293 INFO L225 Difference]: With dead ends: 1412 [2021-11-25 20:34:08,293 INFO L226 Difference]: Without dead ends: 1331 [2021-11-25 20:34:08,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:34:08,294 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 4570 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 2822 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4570 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:08,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4570 Valid, 3071 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2822 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:34:08,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-11-25 20:34:08,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 606. [2021-11-25 20:34:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 584 states have (on average 1.3339041095890412) internal successors, (779), 605 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 779 transitions. [2021-11-25 20:34:08,389 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 779 transitions. Word has length 93 [2021-11-25 20:34:08,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:08,390 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 779 transitions. [2021-11-25 20:34:08,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:08,390 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 779 transitions. [2021-11-25 20:34:08,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:08,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:08,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:08,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 20:34:08,392 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:08,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1361131299, now seen corresponding path program 1 times [2021-11-25 20:34:08,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:08,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902103114] [2021-11-25 20:34:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:08,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:08,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:08,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902103114] [2021-11-25 20:34:08,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902103114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:08,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:08,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:08,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971680539] [2021-11-25 20:34:08,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:08,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:08,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:08,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:08,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:08,589 INFO L87 Difference]: Start difference. First operand 606 states and 779 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:10,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:10,951 INFO L93 Difference]: Finished difference Result 1332 states and 1720 transitions. [2021-11-25 20:34:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:34:10,952 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:10,958 INFO L225 Difference]: With dead ends: 1332 [2021-11-25 20:34:10,958 INFO L226 Difference]: Without dead ends: 1273 [2021-11-25 20:34:10,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:34:10,960 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 4811 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4811 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 3330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:10,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4811 Valid, 2869 Invalid, 3330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:34:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-11-25 20:34:11,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 610. [2021-11-25 20:34:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 588 states have (on average 1.3316326530612246) internal successors, (783), 609 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 783 transitions. [2021-11-25 20:34:11,092 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 783 transitions. Word has length 93 [2021-11-25 20:34:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:11,093 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 783 transitions. [2021-11-25 20:34:11,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 783 transitions. [2021-11-25 20:34:11,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:11,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:11,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:11,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 20:34:11,096 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:11,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:11,096 INFO L85 PathProgramCache]: Analyzing trace with hash 690949312, now seen corresponding path program 1 times [2021-11-25 20:34:11,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:11,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542224351] [2021-11-25 20:34:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:11,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:11,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:11,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542224351] [2021-11-25 20:34:11,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542224351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:11,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:11,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:11,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873762106] [2021-11-25 20:34:11,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:11,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:11,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:11,211 INFO L87 Difference]: Start difference. First operand 610 states and 783 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:12,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:12,472 INFO L93 Difference]: Finished difference Result 1051 states and 1349 transitions. [2021-11-25 20:34:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:12,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:12,477 INFO L225 Difference]: With dead ends: 1051 [2021-11-25 20:34:12,477 INFO L226 Difference]: Without dead ends: 996 [2021-11-25 20:34:12,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:34:12,479 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 2847 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:12,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2847 Valid, 2277 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:34:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-25 20:34:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 610. [2021-11-25 20:34:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 588 states have (on average 1.3299319727891157) internal successors, (782), 609 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 782 transitions. [2021-11-25 20:34:12,562 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 782 transitions. Word has length 93 [2021-11-25 20:34:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:12,562 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 782 transitions. [2021-11-25 20:34:12,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 782 transitions. [2021-11-25 20:34:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:12,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:12,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:12,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 20:34:12,565 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:12,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:12,566 INFO L85 PathProgramCache]: Analyzing trace with hash 235260732, now seen corresponding path program 1 times [2021-11-25 20:34:12,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:12,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495506653] [2021-11-25 20:34:12,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:12,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:12,761 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:12,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495506653] [2021-11-25 20:34:12,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495506653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:12,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:12,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:12,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344006342] [2021-11-25 20:34:12,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:12,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:12,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:12,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:12,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:12,763 INFO L87 Difference]: Start difference. First operand 610 states and 782 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:15,252 INFO L93 Difference]: Finished difference Result 1332 states and 1718 transitions. [2021-11-25 20:34:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:34:15,253 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:15,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:15,256 INFO L225 Difference]: With dead ends: 1332 [2021-11-25 20:34:15,256 INFO L226 Difference]: Without dead ends: 1273 [2021-11-25 20:34:15,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:34:15,258 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 4805 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 2940 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4805 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 3558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 2940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:15,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4805 Valid, 3097 Invalid, 3558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 2940 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:34:15,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-11-25 20:34:15,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 614. [2021-11-25 20:34:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 592 states have (on average 1.3277027027027026) internal successors, (786), 613 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 786 transitions. [2021-11-25 20:34:15,363 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 786 transitions. Word has length 93 [2021-11-25 20:34:15,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:15,364 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 786 transitions. [2021-11-25 20:34:15,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:15,364 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 786 transitions. [2021-11-25 20:34:15,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:15,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:15,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:15,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 20:34:15,366 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1312261900, now seen corresponding path program 1 times [2021-11-25 20:34:15,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:15,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520341469] [2021-11-25 20:34:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:15,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:15,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:15,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520341469] [2021-11-25 20:34:15,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520341469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:15,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:15,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:15,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295924834] [2021-11-25 20:34:15,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:15,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:15,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:15,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:15,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:15,485 INFO L87 Difference]: Start difference. First operand 614 states and 786 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:16,875 INFO L93 Difference]: Finished difference Result 1051 states and 1347 transitions. [2021-11-25 20:34:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:16,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:16,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:16,877 INFO L225 Difference]: With dead ends: 1051 [2021-11-25 20:34:16,877 INFO L226 Difference]: Without dead ends: 996 [2021-11-25 20:34:16,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:34:16,878 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 2801 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2801 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 2128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:16,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2801 Valid, 2307 Invalid, 2128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 20:34:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-25 20:34:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 614. [2021-11-25 20:34:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 592 states have (on average 1.3260135135135136) internal successors, (785), 613 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 785 transitions. [2021-11-25 20:34:16,961 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 785 transitions. Word has length 93 [2021-11-25 20:34:16,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:16,961 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 785 transitions. [2021-11-25 20:34:16,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:16,962 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 785 transitions. [2021-11-25 20:34:16,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:16,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:16,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:16,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 20:34:16,963 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash 297551301, now seen corresponding path program 1 times [2021-11-25 20:34:16,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:16,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734440112] [2021-11-25 20:34:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:16,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:17,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:17,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734440112] [2021-11-25 20:34:17,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734440112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:17,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:17,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:17,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301363491] [2021-11-25 20:34:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:17,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:17,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:17,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:17,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:17,159 INFO L87 Difference]: Start difference. First operand 614 states and 785 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:19,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:19,552 INFO L93 Difference]: Finished difference Result 1325 states and 1711 transitions. [2021-11-25 20:34:19,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:34:19,553 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:19,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:19,555 INFO L225 Difference]: With dead ends: 1325 [2021-11-25 20:34:19,555 INFO L226 Difference]: Without dead ends: 1270 [2021-11-25 20:34:19,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:34:19,557 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 4804 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4804 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:19,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4804 Valid, 2537 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 20:34:19,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-11-25 20:34:19,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 618. [2021-11-25 20:34:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 596 states have (on average 1.3238255033557047) internal successors, (789), 617 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 789 transitions. [2021-11-25 20:34:19,647 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 789 transitions. Word has length 93 [2021-11-25 20:34:19,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:19,647 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 789 transitions. [2021-11-25 20:34:19,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:19,648 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 789 transitions. [2021-11-25 20:34:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:19,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:19,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:19,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 20:34:19,650 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:19,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:19,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1532412921, now seen corresponding path program 1 times [2021-11-25 20:34:19,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:19,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082984584] [2021-11-25 20:34:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:19,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:19,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:19,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082984584] [2021-11-25 20:34:19,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082984584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:19,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:19,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:19,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019255354] [2021-11-25 20:34:19,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:19,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:19,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:19,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:19,844 INFO L87 Difference]: Start difference. First operand 618 states and 789 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:22,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:22,366 INFO L93 Difference]: Finished difference Result 1333 states and 1718 transitions. [2021-11-25 20:34:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:34:22,367 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:22,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:22,369 INFO L225 Difference]: With dead ends: 1333 [2021-11-25 20:34:22,370 INFO L226 Difference]: Without dead ends: 1274 [2021-11-25 20:34:22,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:34:22,371 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 4874 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 2867 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4874 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 3500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 2867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:22,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4874 Valid, 3037 Invalid, 3500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 2867 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:34:22,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-11-25 20:34:22,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 622. [2021-11-25 20:34:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.3216666666666668) internal successors, (793), 621 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 793 transitions. [2021-11-25 20:34:22,483 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 793 transitions. Word has length 93 [2021-11-25 20:34:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:22,483 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 793 transitions. [2021-11-25 20:34:22,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 793 transitions. [2021-11-25 20:34:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:22,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:22,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:22,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 20:34:22,486 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:22,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:22,486 INFO L85 PathProgramCache]: Analyzing trace with hash -170860907, now seen corresponding path program 1 times [2021-11-25 20:34:22,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:22,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19014248] [2021-11-25 20:34:22,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:22,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:22,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:22,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19014248] [2021-11-25 20:34:22,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19014248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:22,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:22,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:22,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199489856] [2021-11-25 20:34:22,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:22,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:22,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:22,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:22,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:22,601 INFO L87 Difference]: Start difference. First operand 622 states and 793 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:23,900 INFO L93 Difference]: Finished difference Result 1051 states and 1344 transitions. [2021-11-25 20:34:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:23,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:23,903 INFO L225 Difference]: With dead ends: 1051 [2021-11-25 20:34:23,903 INFO L226 Difference]: Without dead ends: 996 [2021-11-25 20:34:23,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:34:23,904 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 2913 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:23,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2913 Valid, 2193 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:34:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-25 20:34:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 622. [2021-11-25 20:34:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.32) internal successors, (792), 621 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 792 transitions. [2021-11-25 20:34:23,995 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 792 transitions. Word has length 93 [2021-11-25 20:34:23,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:23,995 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 792 transitions. [2021-11-25 20:34:23,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 792 transitions. [2021-11-25 20:34:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:23,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:23,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:23,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 20:34:23,997 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1086119729, now seen corresponding path program 1 times [2021-11-25 20:34:23,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:23,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431877617] [2021-11-25 20:34:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:23,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:24,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:24,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431877617] [2021-11-25 20:34:24,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431877617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:24,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:24,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:24,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102484796] [2021-11-25 20:34:24,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:24,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:24,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:24,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:24,207 INFO L87 Difference]: Start difference. First operand 622 states and 792 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:26,759 INFO L93 Difference]: Finished difference Result 1433 states and 1846 transitions. [2021-11-25 20:34:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:34:26,759 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:26,761 INFO L225 Difference]: With dead ends: 1433 [2021-11-25 20:34:26,762 INFO L226 Difference]: Without dead ends: 1352 [2021-11-25 20:34:26,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:34:26,763 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 5057 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5057 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:26,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5057 Valid, 3170 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:34:26,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-11-25 20:34:26,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 626. [2021-11-25 20:34:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 604 states have (on average 1.3178807947019868) internal successors, (796), 625 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 796 transitions. [2021-11-25 20:34:26,878 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 796 transitions. Word has length 93 [2021-11-25 20:34:26,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:26,878 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 796 transitions. [2021-11-25 20:34:26,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 796 transitions. [2021-11-25 20:34:26,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:34:26,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:26,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:26,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 20:34:26,880 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:26,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:26,881 INFO L85 PathProgramCache]: Analyzing trace with hash -960925632, now seen corresponding path program 1 times [2021-11-25 20:34:26,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:26,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572393463] [2021-11-25 20:34:26,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:26,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:26,991 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:26,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572393463] [2021-11-25 20:34:26,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572393463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:26,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:26,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:26,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556527757] [2021-11-25 20:34:26,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:26,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:26,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:26,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:26,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:26,994 INFO L87 Difference]: Start difference. First operand 626 states and 796 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:28,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:28,486 INFO L93 Difference]: Finished difference Result 1059 states and 1351 transitions. [2021-11-25 20:34:28,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:28,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 20:34:28,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:28,488 INFO L225 Difference]: With dead ends: 1059 [2021-11-25 20:34:28,488 INFO L226 Difference]: Without dead ends: 1000 [2021-11-25 20:34:28,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:34:28,489 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 2922 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2922 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:28,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2922 Valid, 2184 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 20:34:28,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-11-25 20:34:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 626. [2021-11-25 20:34:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 604 states have (on average 1.3162251655629138) internal successors, (795), 625 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 795 transitions. [2021-11-25 20:34:28,585 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 795 transitions. Word has length 93 [2021-11-25 20:34:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:28,585 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 795 transitions. [2021-11-25 20:34:28,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 795 transitions. [2021-11-25 20:34:28,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 20:34:28,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:28,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:28,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 20:34:28,587 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:28,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:28,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2080629291, now seen corresponding path program 1 times [2021-11-25 20:34:28,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:28,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543156390] [2021-11-25 20:34:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:28,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:28,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:28,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543156390] [2021-11-25 20:34:28,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543156390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:28,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:28,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:28,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649212347] [2021-11-25 20:34:28,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:28,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:28,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:28,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:28,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:28,700 INFO L87 Difference]: Start difference. First operand 626 states and 795 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:30,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:30,143 INFO L93 Difference]: Finished difference Result 1059 states and 1349 transitions. [2021-11-25 20:34:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:30,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-25 20:34:30,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:30,145 INFO L225 Difference]: With dead ends: 1059 [2021-11-25 20:34:30,145 INFO L226 Difference]: Without dead ends: 1000 [2021-11-25 20:34:30,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:34:30,147 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 2852 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2852 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:30,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2852 Valid, 2255 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1977 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 20:34:30,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-11-25 20:34:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 622. [2021-11-25 20:34:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.3166666666666667) internal successors, (790), 621 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 790 transitions. [2021-11-25 20:34:30,293 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 790 transitions. Word has length 94 [2021-11-25 20:34:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:30,293 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 790 transitions. [2021-11-25 20:34:30,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 790 transitions. [2021-11-25 20:34:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 20:34:30,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:30,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:30,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 20:34:30,296 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1711046329, now seen corresponding path program 1 times [2021-11-25 20:34:30,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:30,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290936256] [2021-11-25 20:34:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:30,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:30,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:30,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290936256] [2021-11-25 20:34:30,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290936256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:30,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:30,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:30,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987719521] [2021-11-25 20:34:30,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:30,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:30,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:30,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:30,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:30,409 INFO L87 Difference]: Start difference. First operand 622 states and 790 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:31,967 INFO L93 Difference]: Finished difference Result 1105 states and 1408 transitions. [2021-11-25 20:34:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:31,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-25 20:34:31,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:31,969 INFO L225 Difference]: With dead ends: 1105 [2021-11-25 20:34:31,969 INFO L226 Difference]: Without dead ends: 1024 [2021-11-25 20:34:31,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:34:31,970 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 2617 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:31,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2617 Valid, 2642 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 20:34:31,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-11-25 20:34:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 618. [2021-11-25 20:34:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 596 states have (on average 1.3171140939597314) internal successors, (785), 617 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 785 transitions. [2021-11-25 20:34:32,089 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 785 transitions. Word has length 94 [2021-11-25 20:34:32,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:32,089 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 785 transitions. [2021-11-25 20:34:32,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:32,090 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 785 transitions. [2021-11-25 20:34:32,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 20:34:32,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:32,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:32,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-25 20:34:32,092 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:32,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:32,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1386870711, now seen corresponding path program 1 times [2021-11-25 20:34:32,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:32,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897817235] [2021-11-25 20:34:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:32,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:32,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:32,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897817235] [2021-11-25 20:34:32,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897817235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:32,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:32,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:32,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444030673] [2021-11-25 20:34:32,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:32,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:32,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:32,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:32,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:32,198 INFO L87 Difference]: Start difference. First operand 618 states and 785 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:33,556 INFO L93 Difference]: Finished difference Result 1055 states and 1343 transitions. [2021-11-25 20:34:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:33,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-25 20:34:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:33,557 INFO L225 Difference]: With dead ends: 1055 [2021-11-25 20:34:33,558 INFO L226 Difference]: Without dead ends: 996 [2021-11-25 20:34:33,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:34:33,559 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 2730 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:33,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2730 Valid, 2387 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 20:34:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-25 20:34:33,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 614. [2021-11-25 20:34:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 592 states have (on average 1.3175675675675675) internal successors, (780), 613 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 780 transitions. [2021-11-25 20:34:33,654 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 780 transitions. Word has length 94 [2021-11-25 20:34:33,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:33,654 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 780 transitions. [2021-11-25 20:34:33,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 780 transitions. [2021-11-25 20:34:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 20:34:33,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:33,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:33,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-25 20:34:33,656 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:33,657 INFO L85 PathProgramCache]: Analyzing trace with hash -753799877, now seen corresponding path program 1 times [2021-11-25 20:34:33,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:33,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049853928] [2021-11-25 20:34:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:33,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:33,771 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:33,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049853928] [2021-11-25 20:34:33,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049853928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:33,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:33,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:33,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799693955] [2021-11-25 20:34:33,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:33,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:33,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:33,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:33,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:33,774 INFO L87 Difference]: Start difference. First operand 614 states and 780 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:35,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:35,095 INFO L93 Difference]: Finished difference Result 1051 states and 1339 transitions. [2021-11-25 20:34:35,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:35,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-25 20:34:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:35,097 INFO L225 Difference]: With dead ends: 1051 [2021-11-25 20:34:35,097 INFO L226 Difference]: Without dead ends: 996 [2021-11-25 20:34:35,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:34:35,099 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 2722 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:35,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2722 Valid, 2405 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:34:35,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-25 20:34:35,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 610. [2021-11-25 20:34:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 588 states have (on average 1.3180272108843538) internal successors, (775), 609 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 775 transitions. [2021-11-25 20:34:35,213 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 775 transitions. Word has length 94 [2021-11-25 20:34:35,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:35,213 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 775 transitions. [2021-11-25 20:34:35,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 775 transitions. [2021-11-25 20:34:35,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 20:34:35,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:35,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:35,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-25 20:34:35,214 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash 998669502, now seen corresponding path program 1 times [2021-11-25 20:34:35,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:35,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419710728] [2021-11-25 20:34:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:35,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:35,532 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:35,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419710728] [2021-11-25 20:34:35,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419710728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:35,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:35,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:35,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43021043] [2021-11-25 20:34:35,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:35,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:35,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:35,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:35,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:35,534 INFO L87 Difference]: Start difference. First operand 610 states and 775 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:36,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:36,819 INFO L93 Difference]: Finished difference Result 1288 states and 1654 transitions. [2021-11-25 20:34:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:34:36,819 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-25 20:34:36,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:36,822 INFO L225 Difference]: With dead ends: 1288 [2021-11-25 20:34:36,822 INFO L226 Difference]: Without dead ends: 1148 [2021-11-25 20:34:36,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:34:36,823 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 2498 mSDsluCounter, 4829 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 5956 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:36,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2498 Valid, 5956 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:34:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-11-25 20:34:36,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 517. [2021-11-25 20:34:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 496 states have (on average 1.3024193548387097) internal successors, (646), 516 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 646 transitions. [2021-11-25 20:34:36,944 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 646 transitions. Word has length 94 [2021-11-25 20:34:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:36,944 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 646 transitions. [2021-11-25 20:34:36,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:36,945 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 646 transitions. [2021-11-25 20:34:36,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 20:34:36,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:36,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:36,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-25 20:34:36,946 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:36,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:36,946 INFO L85 PathProgramCache]: Analyzing trace with hash 350887970, now seen corresponding path program 1 times [2021-11-25 20:34:36,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:36,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151764614] [2021-11-25 20:34:36,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:36,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:37,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:37,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151764614] [2021-11-25 20:34:37,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151764614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:37,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:37,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:37,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007500698] [2021-11-25 20:34:37,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:37,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:37,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:37,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:37,056 INFO L87 Difference]: Start difference. First operand 517 states and 646 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:38,301 INFO L93 Difference]: Finished difference Result 915 states and 1151 transitions. [2021-11-25 20:34:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:38,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-25 20:34:38,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:38,303 INFO L225 Difference]: With dead ends: 915 [2021-11-25 20:34:38,303 INFO L226 Difference]: Without dead ends: 856 [2021-11-25 20:34:38,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:34:38,304 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 2283 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2283 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:38,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2283 Valid, 2042 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:34:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-11-25 20:34:38,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 513. [2021-11-25 20:34:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 492 states have (on average 1.3028455284552845) internal successors, (641), 512 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 641 transitions. [2021-11-25 20:34:38,394 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 641 transitions. Word has length 94 [2021-11-25 20:34:38,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:38,394 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 641 transitions. [2021-11-25 20:34:38,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 641 transitions. [2021-11-25 20:34:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 20:34:38,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:38,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:38,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-25 20:34:38,396 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:38,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:38,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1902489423, now seen corresponding path program 1 times [2021-11-25 20:34:38,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:38,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858153481] [2021-11-25 20:34:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:38,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:38,508 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:38,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858153481] [2021-11-25 20:34:38,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858153481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:38,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:38,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:38,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082654935] [2021-11-25 20:34:38,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:38,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:38,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:38,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:38,510 INFO L87 Difference]: Start difference. First operand 513 states and 641 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:39,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:39,844 INFO L93 Difference]: Finished difference Result 945 states and 1192 transitions. [2021-11-25 20:34:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:39,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-25 20:34:39,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:39,846 INFO L225 Difference]: With dead ends: 945 [2021-11-25 20:34:39,846 INFO L226 Difference]: Without dead ends: 864 [2021-11-25 20:34:39,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:34:39,848 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 1457 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:39,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1457 Valid, 2346 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:34:39,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-11-25 20:34:39,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 509. [2021-11-25 20:34:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 488 states have (on average 1.3032786885245902) internal successors, (636), 508 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 636 transitions. [2021-11-25 20:34:39,957 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 636 transitions. Word has length 94 [2021-11-25 20:34:39,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:39,957 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 636 transitions. [2021-11-25 20:34:39,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:39,957 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 636 transitions. [2021-11-25 20:34:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:34:39,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:39,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:39,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-25 20:34:39,959 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:39,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:39,959 INFO L85 PathProgramCache]: Analyzing trace with hash 296209564, now seen corresponding path program 1 times [2021-11-25 20:34:39,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:39,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079518668] [2021-11-25 20:34:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:39,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:40,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:40,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079518668] [2021-11-25 20:34:40,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079518668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:40,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:40,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:40,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832587643] [2021-11-25 20:34:40,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:40,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:40,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:40,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:40,086 INFO L87 Difference]: Start difference. First operand 509 states and 636 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:41,300 INFO L93 Difference]: Finished difference Result 916 states and 1149 transitions. [2021-11-25 20:34:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:41,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:34:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:41,302 INFO L225 Difference]: With dead ends: 916 [2021-11-25 20:34:41,302 INFO L226 Difference]: Without dead ends: 852 [2021-11-25 20:34:41,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:34:41,303 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 2376 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:41,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2376 Valid, 2048 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:34:41,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-11-25 20:34:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 509. [2021-11-25 20:34:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 488 states have (on average 1.3012295081967213) internal successors, (635), 508 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 635 transitions. [2021-11-25 20:34:41,456 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 635 transitions. Word has length 95 [2021-11-25 20:34:41,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:41,456 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 635 transitions. [2021-11-25 20:34:41,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 635 transitions. [2021-11-25 20:34:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:34:41,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:41,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:41,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-25 20:34:41,457 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:41,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1335545213, now seen corresponding path program 1 times [2021-11-25 20:34:41,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:41,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783864756] [2021-11-25 20:34:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:41,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:41,567 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:41,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783864756] [2021-11-25 20:34:41,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783864756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:41,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:41,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:41,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348957890] [2021-11-25 20:34:41,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:41,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:41,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:41,569 INFO L87 Difference]: Start difference. First operand 509 states and 635 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:42,810 INFO L93 Difference]: Finished difference Result 880 states and 1094 transitions. [2021-11-25 20:34:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:42,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:34:42,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:42,812 INFO L225 Difference]: With dead ends: 880 [2021-11-25 20:34:42,812 INFO L226 Difference]: Without dead ends: 828 [2021-11-25 20:34:42,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:34:42,813 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 2308 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:42,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2308 Valid, 1847 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:34:42,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-11-25 20:34:42,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 509. [2021-11-25 20:34:42,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 488 states have (on average 1.2991803278688525) internal successors, (634), 508 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 634 transitions. [2021-11-25 20:34:42,959 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 634 transitions. Word has length 95 [2021-11-25 20:34:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:42,959 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 634 transitions. [2021-11-25 20:34:42,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:42,959 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 634 transitions. [2021-11-25 20:34:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:34:42,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:42,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:42,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-25 20:34:42,962 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:42,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:42,962 INFO L85 PathProgramCache]: Analyzing trace with hash -186851275, now seen corresponding path program 1 times [2021-11-25 20:34:42,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:42,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822904126] [2021-11-25 20:34:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:42,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:43,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:43,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822904126] [2021-11-25 20:34:43,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822904126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:43,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:43,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:43,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27393598] [2021-11-25 20:34:43,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:43,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:43,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:43,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:43,158 INFO L87 Difference]: Start difference. First operand 509 states and 634 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:45,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:45,625 INFO L93 Difference]: Finished difference Result 1274 states and 1615 transitions. [2021-11-25 20:34:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:34:45,625 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:34:45,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:45,630 INFO L225 Difference]: With dead ends: 1274 [2021-11-25 20:34:45,630 INFO L226 Difference]: Without dead ends: 1187 [2021-11-25 20:34:45,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:34:45,632 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 3927 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3927 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:45,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3927 Valid, 2911 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 20:34:45,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-11-25 20:34:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 513. [2021-11-25 20:34:45,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 492 states have (on average 1.2967479674796747) internal successors, (638), 512 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 638 transitions. [2021-11-25 20:34:45,745 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 638 transitions. Word has length 95 [2021-11-25 20:34:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:45,745 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 638 transitions. [2021-11-25 20:34:45,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 638 transitions. [2021-11-25 20:34:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:34:45,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:45,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:45,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-25 20:34:45,747 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:45,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:45,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1026660038, now seen corresponding path program 1 times [2021-11-25 20:34:45,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:45,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643085233] [2021-11-25 20:34:45,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:45,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:45,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:45,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643085233] [2021-11-25 20:34:45,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643085233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:45,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:45,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:45,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025392830] [2021-11-25 20:34:45,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:45,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:45,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:45,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:45,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:45,940 INFO L87 Difference]: Start difference. First operand 513 states and 638 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:48,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:48,206 INFO L93 Difference]: Finished difference Result 1196 states and 1514 transitions. [2021-11-25 20:34:48,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:34:48,207 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:34:48,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:48,208 INFO L225 Difference]: With dead ends: 1196 [2021-11-25 20:34:48,208 INFO L226 Difference]: Without dead ends: 1132 [2021-11-25 20:34:48,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:34:48,209 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 4365 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 2638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:48,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4365 Valid, 2527 Invalid, 2638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 20:34:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-11-25 20:34:48,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 517. [2021-11-25 20:34:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 496 states have (on average 1.2943548387096775) internal successors, (642), 516 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:48,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 642 transitions. [2021-11-25 20:34:48,310 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 642 transitions. Word has length 95 [2021-11-25 20:34:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:48,310 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 642 transitions. [2021-11-25 20:34:48,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 642 transitions. [2021-11-25 20:34:48,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:34:48,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:48,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:48,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-25 20:34:48,312 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash -605094739, now seen corresponding path program 1 times [2021-11-25 20:34:48,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:48,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821377905] [2021-11-25 20:34:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:48,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:48,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:48,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821377905] [2021-11-25 20:34:48,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821377905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:48,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:48,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:48,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674229636] [2021-11-25 20:34:48,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:48,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:48,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:48,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:48,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:48,420 INFO L87 Difference]: Start difference. First operand 517 states and 642 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:49,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:49,714 INFO L93 Difference]: Finished difference Result 888 states and 1101 transitions. [2021-11-25 20:34:49,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:49,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:34:49,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:49,716 INFO L225 Difference]: With dead ends: 888 [2021-11-25 20:34:49,716 INFO L226 Difference]: Without dead ends: 836 [2021-11-25 20:34:49,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:34:49,718 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 2226 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:49,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2226 Valid, 1905 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:34:49,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-11-25 20:34:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 517. [2021-11-25 20:34:49,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 496 states have (on average 1.2923387096774193) internal successors, (641), 516 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 641 transitions. [2021-11-25 20:34:49,872 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 641 transitions. Word has length 95 [2021-11-25 20:34:49,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:49,873 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 641 transitions. [2021-11-25 20:34:49,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 641 transitions. [2021-11-25 20:34:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:34:49,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:49,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:49,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-25 20:34:49,875 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:49,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1892803208, now seen corresponding path program 1 times [2021-11-25 20:34:49,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:49,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129421363] [2021-11-25 20:34:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:49,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:50,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:50,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129421363] [2021-11-25 20:34:50,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129421363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:50,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:50,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:50,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923940269] [2021-11-25 20:34:50,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:50,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:50,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:50,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:50,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:50,071 INFO L87 Difference]: Start difference. First operand 517 states and 641 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:52,506 INFO L93 Difference]: Finished difference Result 1128 states and 1417 transitions. [2021-11-25 20:34:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:34:52,507 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:34:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:52,512 INFO L225 Difference]: With dead ends: 1128 [2021-11-25 20:34:52,513 INFO L226 Difference]: Without dead ends: 1076 [2021-11-25 20:34:52,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:34:52,518 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 3971 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:52,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3971 Valid, 1988 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:34:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2021-11-25 20:34:52,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 521. [2021-11-25 20:34:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 500 states have (on average 1.29) internal successors, (645), 520 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 645 transitions. [2021-11-25 20:34:52,717 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 645 transitions. Word has length 95 [2021-11-25 20:34:52,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:52,718 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 645 transitions. [2021-11-25 20:34:52,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:52,718 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 645 transitions. [2021-11-25 20:34:52,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:34:52,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:52,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:52,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-25 20:34:52,720 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:52,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash -174985950, now seen corresponding path program 1 times [2021-11-25 20:34:52,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:52,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747673976] [2021-11-25 20:34:52,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:52,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:52,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:52,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747673976] [2021-11-25 20:34:52,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747673976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:52,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:52,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:52,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523537054] [2021-11-25 20:34:52,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:52,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:52,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:52,834 INFO L87 Difference]: Start difference. First operand 521 states and 645 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:53,972 INFO L93 Difference]: Finished difference Result 885 states and 1096 transitions. [2021-11-25 20:34:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:53,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:34:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:53,974 INFO L225 Difference]: With dead ends: 885 [2021-11-25 20:34:53,974 INFO L226 Difference]: Without dead ends: 836 [2021-11-25 20:34:53,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:34:53,975 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 2319 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:53,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2319 Valid, 1807 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:34:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-11-25 20:34:54,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 521. [2021-11-25 20:34:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 500 states have (on average 1.288) internal successors, (644), 520 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 644 transitions. [2021-11-25 20:34:54,085 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 644 transitions. Word has length 95 [2021-11-25 20:34:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:54,085 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 644 transitions. [2021-11-25 20:34:54,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 644 transitions. [2021-11-25 20:34:54,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:34:54,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:54,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:54,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-25 20:34:54,086 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:54,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash 751271791, now seen corresponding path program 1 times [2021-11-25 20:34:54,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:54,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273716590] [2021-11-25 20:34:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:54,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:54,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:54,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273716590] [2021-11-25 20:34:54,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273716590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:54,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:54,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:54,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410808599] [2021-11-25 20:34:54,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:54,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:54,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:54,264 INFO L87 Difference]: Start difference. First operand 521 states and 644 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:56,631 INFO L93 Difference]: Finished difference Result 1153 states and 1450 transitions. [2021-11-25 20:34:56,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:34:56,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:34:56,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:56,633 INFO L225 Difference]: With dead ends: 1153 [2021-11-25 20:34:56,634 INFO L226 Difference]: Without dead ends: 1136 [2021-11-25 20:34:56,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:34:56,635 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 3999 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3999 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:56,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3999 Valid, 2573 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:34:56,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-11-25 20:34:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 525. [2021-11-25 20:34:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 504 states have (on average 1.2857142857142858) internal successors, (648), 524 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 648 transitions. [2021-11-25 20:34:56,776 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 648 transitions. Word has length 95 [2021-11-25 20:34:56,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:56,776 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 648 transitions. [2021-11-25 20:34:56,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:56,776 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 648 transitions. [2021-11-25 20:34:56,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:34:56,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:56,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:56,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-25 20:34:56,777 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:56,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:56,777 INFO L85 PathProgramCache]: Analyzing trace with hash -880482986, now seen corresponding path program 1 times [2021-11-25 20:34:56,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:56,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682665886] [2021-11-25 20:34:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:56,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:56,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:56,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682665886] [2021-11-25 20:34:56,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682665886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:56,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:56,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:34:56,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10842966] [2021-11-25 20:34:56,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:56,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:56,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:56,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:56,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:56,878 INFO L87 Difference]: Start difference. First operand 525 states and 648 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:58,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:58,094 INFO L93 Difference]: Finished difference Result 845 states and 1039 transitions. [2021-11-25 20:34:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:34:58,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:34:58,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:58,096 INFO L225 Difference]: With dead ends: 845 [2021-11-25 20:34:58,097 INFO L226 Difference]: Without dead ends: 840 [2021-11-25 20:34:58,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:34:58,098 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 2308 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:58,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2308 Valid, 1832 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:34:58,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-25 20:34:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 525. [2021-11-25 20:34:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 504 states have (on average 1.2837301587301588) internal successors, (647), 524 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) [2021-11-25 20:34:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 647 transitions. [2021-11-25 20:34:58,269 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 647 transitions. Word has length 95 [2021-11-25 20:34:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:58,269 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 647 transitions. [2021-11-25 20:34:58,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 647 transitions. [2021-11-25 20:34:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:34:58,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:58,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:58,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-25 20:34:58,270 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:34:58,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1948026529, now seen corresponding path program 1 times [2021-11-25 20:34:58,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:58,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186264198] [2021-11-25 20:34:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:58,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:58,453 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:58,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186264198] [2021-11-25 20:34:58,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186264198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:58,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:58,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:34:58,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404998438] [2021-11-25 20:34:58,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:58,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:34:58,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:58,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:34:58,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:58,454 INFO L87 Difference]: Start difference. First operand 525 states and 647 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:00,677 INFO L93 Difference]: Finished difference Result 1085 states and 1354 transitions. [2021-11-25 20:35:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:35:00,678 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:35:00,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:00,679 INFO L225 Difference]: With dead ends: 1085 [2021-11-25 20:35:00,679 INFO L226 Difference]: Without dead ends: 1080 [2021-11-25 20:35:00,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:35:00,680 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 4013 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4013 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:00,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4013 Valid, 1975 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 20:35:00,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-11-25 20:35:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 529. [2021-11-25 20:35:00,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 508 states have (on average 1.281496062992126) internal successors, (651), 528 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:00,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 651 transitions. [2021-11-25 20:35:00,810 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 651 transitions. Word has length 95 [2021-11-25 20:35:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:00,810 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 651 transitions. [2021-11-25 20:35:00,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 651 transitions. [2021-11-25 20:35:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:35:00,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:00,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:00,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-25 20:35:00,811 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:00,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:00,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1836058637, now seen corresponding path program 1 times [2021-11-25 20:35:00,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:00,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159739029] [2021-11-25 20:35:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:00,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:00,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:00,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159739029] [2021-11-25 20:35:00,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159739029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:00,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:00,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:00,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530528022] [2021-11-25 20:35:00,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:00,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:00,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:00,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:00,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:00,937 INFO L87 Difference]: Start difference. First operand 529 states and 651 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:02,094 INFO L93 Difference]: Finished difference Result 889 states and 1097 transitions. [2021-11-25 20:35:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:02,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:35:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:02,095 INFO L225 Difference]: With dead ends: 889 [2021-11-25 20:35:02,095 INFO L226 Difference]: Without dead ends: 840 [2021-11-25 20:35:02,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:35:02,096 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 2320 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:02,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 1799 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:35:02,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-25 20:35:02,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 529. [2021-11-25 20:35:02,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 508 states have (on average 1.279527559055118) internal successors, (650), 528 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 650 transitions. [2021-11-25 20:35:02,214 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 650 transitions. Word has length 95 [2021-11-25 20:35:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:02,215 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 650 transitions. [2021-11-25 20:35:02,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 650 transitions. [2021-11-25 20:35:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:35:02,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:02,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:02,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-25 20:35:02,217 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:02,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash 851489864, now seen corresponding path program 1 times [2021-11-25 20:35:02,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:02,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358462604] [2021-11-25 20:35:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:02,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:02,416 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:02,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358462604] [2021-11-25 20:35:02,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358462604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:02,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:02,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:35:02,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506079373] [2021-11-25 20:35:02,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:02,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:35:02,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:02,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:35:02,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:35:02,418 INFO L87 Difference]: Start difference. First operand 529 states and 650 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:05,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:05,223 INFO L93 Difference]: Finished difference Result 1085 states and 1352 transitions. [2021-11-25 20:35:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:35:05,224 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:35:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:05,225 INFO L225 Difference]: With dead ends: 1085 [2021-11-25 20:35:05,225 INFO L226 Difference]: Without dead ends: 1080 [2021-11-25 20:35:05,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:35:05,226 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 4020 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4020 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:05,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4020 Valid, 1966 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 20:35:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-11-25 20:35:05,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 533. [2021-11-25 20:35:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 512 states have (on average 1.27734375) internal successors, (654), 532 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 654 transitions. [2021-11-25 20:35:05,349 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 654 transitions. Word has length 95 [2021-11-25 20:35:05,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:05,349 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 654 transitions. [2021-11-25 20:35:05,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 654 transitions. [2021-11-25 20:35:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:35:05,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:05,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:05,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-25 20:35:05,351 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:05,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:05,351 INFO L85 PathProgramCache]: Analyzing trace with hash 740784075, now seen corresponding path program 1 times [2021-11-25 20:35:05,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:05,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016456568] [2021-11-25 20:35:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:05,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:05,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:05,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016456568] [2021-11-25 20:35:05,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016456568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:05,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:05,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:05,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321931408] [2021-11-25 20:35:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:05,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:05,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:05,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:05,473 INFO L87 Difference]: Start difference. First operand 533 states and 654 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:06,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:06,893 INFO L93 Difference]: Finished difference Result 889 states and 1095 transitions. [2021-11-25 20:35:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:06,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:35:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:06,895 INFO L225 Difference]: With dead ends: 889 [2021-11-25 20:35:06,895 INFO L226 Difference]: Without dead ends: 840 [2021-11-25 20:35:06,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:35:06,896 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 2238 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:06,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2238 Valid, 1861 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:35:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-25 20:35:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 533. [2021-11-25 20:35:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 512 states have (on average 1.275390625) internal successors, (653), 532 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:07,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 653 transitions. [2021-11-25 20:35:07,034 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 653 transitions. Word has length 95 [2021-11-25 20:35:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:07,034 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 653 transitions. [2021-11-25 20:35:07,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 653 transitions. [2021-11-25 20:35:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:35:07,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:07,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:07,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-25 20:35:07,035 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:07,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:07,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1797536421, now seen corresponding path program 1 times [2021-11-25 20:35:07,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:07,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972045875] [2021-11-25 20:35:07,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:07,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:07,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:07,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972045875] [2021-11-25 20:35:07,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972045875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:07,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:07,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:35:07,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906205864] [2021-11-25 20:35:07,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:07,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:35:07,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:35:07,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:35:07,208 INFO L87 Difference]: Start difference. First operand 533 states and 653 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:09,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:09,758 INFO L93 Difference]: Finished difference Result 1132 states and 1417 transitions. [2021-11-25 20:35:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:35:09,758 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:35:09,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:09,759 INFO L225 Difference]: With dead ends: 1132 [2021-11-25 20:35:09,759 INFO L226 Difference]: Without dead ends: 1083 [2021-11-25 20:35:09,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:35:09,760 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 3799 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3799 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:09,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3799 Valid, 2414 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 20:35:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2021-11-25 20:35:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 537. [2021-11-25 20:35:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 516 states have (on average 1.2732558139534884) internal successors, (657), 536 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:09,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 657 transitions. [2021-11-25 20:35:09,888 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 657 transitions. Word has length 95 [2021-11-25 20:35:09,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:09,888 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 657 transitions. [2021-11-25 20:35:09,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:09,888 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 657 transitions. [2021-11-25 20:35:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:35:09,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:09,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:09,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-25 20:35:09,890 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:09,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1916605268, now seen corresponding path program 1 times [2021-11-25 20:35:09,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:09,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175807553] [2021-11-25 20:35:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:09,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:10,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:10,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175807553] [2021-11-25 20:35:10,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175807553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:10,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:10,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:35:10,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751760235] [2021-11-25 20:35:10,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:10,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:35:10,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:10,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:35:10,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:35:10,053 INFO L87 Difference]: Start difference. First operand 537 states and 657 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:12,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:12,339 INFO L93 Difference]: Finished difference Result 1132 states and 1413 transitions. [2021-11-25 20:35:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:35:12,339 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:35:12,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:12,340 INFO L225 Difference]: With dead ends: 1132 [2021-11-25 20:35:12,340 INFO L226 Difference]: Without dead ends: 1080 [2021-11-25 20:35:12,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:35:12,341 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 3995 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3995 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:12,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3995 Valid, 1955 Invalid, 2367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 20:35:12,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-11-25 20:35:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 541. [2021-11-25 20:35:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 520 states have (on average 1.271153846153846) internal successors, (661), 540 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 661 transitions. [2021-11-25 20:35:12,476 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 661 transitions. Word has length 95 [2021-11-25 20:35:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:12,476 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 661 transitions. [2021-11-25 20:35:12,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 661 transitions. [2021-11-25 20:35:12,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:35:12,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:12,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:12,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-25 20:35:12,477 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:12,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:12,478 INFO L85 PathProgramCache]: Analyzing trace with hash -249249413, now seen corresponding path program 1 times [2021-11-25 20:35:12,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:12,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621388020] [2021-11-25 20:35:12,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:12,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:12,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:12,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621388020] [2021-11-25 20:35:12,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621388020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:12,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:12,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:12,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21899696] [2021-11-25 20:35:12,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:12,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:12,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:12,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:12,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:12,576 INFO L87 Difference]: Start difference. First operand 541 states and 661 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:13,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:13,848 INFO L93 Difference]: Finished difference Result 889 states and 1092 transitions. [2021-11-25 20:35:13,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:13,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:35:13,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:13,849 INFO L225 Difference]: With dead ends: 889 [2021-11-25 20:35:13,849 INFO L226 Difference]: Without dead ends: 840 [2021-11-25 20:35:13,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:35:13,850 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 2250 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:13,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2250 Valid, 1837 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:35:13,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-25 20:35:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 541. [2021-11-25 20:35:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 520 states have (on average 1.2692307692307692) internal successors, (660), 540 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 660 transitions. [2021-11-25 20:35:13,982 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 660 transitions. Word has length 95 [2021-11-25 20:35:13,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:13,982 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 660 transitions. [2021-11-25 20:35:13,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:13,982 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 660 transitions. [2021-11-25 20:35:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:35:13,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:13,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:13,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-25 20:35:13,983 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:13,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:13,984 INFO L85 PathProgramCache]: Analyzing trace with hash 222607760, now seen corresponding path program 1 times [2021-11-25 20:35:13,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:13,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573271369] [2021-11-25 20:35:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:13,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:14,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:14,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573271369] [2021-11-25 20:35:14,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573271369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:14,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:14,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:35:14,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116344582] [2021-11-25 20:35:14,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:14,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:35:14,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:14,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:35:14,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:35:14,177 INFO L87 Difference]: Start difference. First operand 541 states and 660 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:16,585 INFO L93 Difference]: Finished difference Result 1133 states and 1415 transitions. [2021-11-25 20:35:16,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:35:16,586 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:35:16,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:16,587 INFO L225 Difference]: With dead ends: 1133 [2021-11-25 20:35:16,587 INFO L226 Difference]: Without dead ends: 1084 [2021-11-25 20:35:16,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:35:16,588 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 3992 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3992 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:16,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3992 Valid, 1932 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 20:35:16,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-11-25 20:35:16,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 545. [2021-11-25 20:35:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 524 states have (on average 1.2671755725190839) internal successors, (664), 544 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 664 transitions. [2021-11-25 20:35:16,739 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 664 transitions. Word has length 95 [2021-11-25 20:35:16,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:16,739 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 664 transitions. [2021-11-25 20:35:16,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:16,740 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 664 transitions. [2021-11-25 20:35:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:35:16,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:16,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:16,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-25 20:35:16,742 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:16,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:16,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1892717732, now seen corresponding path program 1 times [2021-11-25 20:35:16,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:16,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75417164] [2021-11-25 20:35:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:16,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:17,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:17,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75417164] [2021-11-25 20:35:17,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75417164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:17,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:17,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:35:17,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727067821] [2021-11-25 20:35:17,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:17,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:35:17,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:17,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:35:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:35:17,051 INFO L87 Difference]: Start difference. First operand 545 states and 664 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:18,934 INFO L93 Difference]: Finished difference Result 1304 states and 1566 transitions. [2021-11-25 20:35:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 20:35:18,935 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 20:35:18,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:18,936 INFO L225 Difference]: With dead ends: 1304 [2021-11-25 20:35:18,936 INFO L226 Difference]: Without dead ends: 1130 [2021-11-25 20:35:18,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:35:18,937 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 2671 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:18,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2671 Valid, 3554 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:35:18,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-11-25 20:35:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 418. [2021-11-25 20:35:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 402 states have (on average 1.2462686567164178) internal successors, (501), 417 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 501 transitions. [2021-11-25 20:35:19,070 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 501 transitions. Word has length 95 [2021-11-25 20:35:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:19,070 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 501 transitions. [2021-11-25 20:35:19,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 501 transitions. [2021-11-25 20:35:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 20:35:19,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:19,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:19,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-25 20:35:19,071 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:19,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:19,072 INFO L85 PathProgramCache]: Analyzing trace with hash 977526231, now seen corresponding path program 1 times [2021-11-25 20:35:19,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:19,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824372016] [2021-11-25 20:35:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:19,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:19,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:19,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824372016] [2021-11-25 20:35:19,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824372016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:19,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:19,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:19,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582532396] [2021-11-25 20:35:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:19,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:19,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:19,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:19,193 INFO L87 Difference]: Start difference. First operand 418 states and 501 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:20,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:20,239 INFO L93 Difference]: Finished difference Result 720 states and 876 transitions. [2021-11-25 20:35:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:20,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-25 20:35:20,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:20,240 INFO L225 Difference]: With dead ends: 720 [2021-11-25 20:35:20,240 INFO L226 Difference]: Without dead ends: 668 [2021-11-25 20:35:20,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:35:20,241 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1744 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:20,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 1408 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:35:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-11-25 20:35:20,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 414. [2021-11-25 20:35:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 398 states have (on average 1.2462311557788945) internal successors, (496), 413 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 496 transitions. [2021-11-25 20:35:20,361 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 496 transitions. Word has length 96 [2021-11-25 20:35:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:20,361 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 496 transitions. [2021-11-25 20:35:20,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 496 transitions. [2021-11-25 20:35:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 20:35:20,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:20,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:20,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-25 20:35:20,366 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:20,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:20,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2102961090, now seen corresponding path program 1 times [2021-11-25 20:35:20,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:20,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831822139] [2021-11-25 20:35:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:20,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:20,469 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:20,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831822139] [2021-11-25 20:35:20,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831822139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:20,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:20,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:20,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988023706] [2021-11-25 20:35:20,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:20,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:20,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:20,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:20,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:20,472 INFO L87 Difference]: Start difference. First operand 414 states and 496 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:21,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:21,539 INFO L93 Difference]: Finished difference Result 756 states and 923 transitions. [2021-11-25 20:35:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:21,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-25 20:35:21,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:21,540 INFO L225 Difference]: With dead ends: 756 [2021-11-25 20:35:21,540 INFO L226 Difference]: Without dead ends: 692 [2021-11-25 20:35:21,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:35:21,541 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1737 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:21,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1737 Valid, 1521 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:35:21,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-11-25 20:35:21,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 410. [2021-11-25 20:35:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 394 states have (on average 1.2461928934010151) internal successors, (491), 409 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 491 transitions. [2021-11-25 20:35:21,662 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 491 transitions. Word has length 96 [2021-11-25 20:35:21,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:21,662 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 491 transitions. [2021-11-25 20:35:21,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:21,662 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 491 transitions. [2021-11-25 20:35:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 20:35:21,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:21,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:21,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-25 20:35:21,663 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:21,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:21,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1106914618, now seen corresponding path program 1 times [2021-11-25 20:35:21,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:21,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987895942] [2021-11-25 20:35:21,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:21,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:21,765 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:21,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987895942] [2021-11-25 20:35:21,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987895942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:21,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:21,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:21,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709022134] [2021-11-25 20:35:21,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:21,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:21,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:21,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:21,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:21,767 INFO L87 Difference]: Start difference. First operand 410 states and 491 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:22,945 INFO L93 Difference]: Finished difference Result 791 states and 967 transitions. [2021-11-25 20:35:22,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:22,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-25 20:35:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:22,946 INFO L225 Difference]: With dead ends: 791 [2021-11-25 20:35:22,946 INFO L226 Difference]: Without dead ends: 704 [2021-11-25 20:35:22,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:35:22,947 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 1694 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:22,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 1683 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:35:22,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-11-25 20:35:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 406. [2021-11-25 20:35:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 390 states have (on average 1.2461538461538462) internal successors, (486), 405 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 486 transitions. [2021-11-25 20:35:23,070 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 486 transitions. Word has length 96 [2021-11-25 20:35:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:23,070 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 486 transitions. [2021-11-25 20:35:23,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 486 transitions. [2021-11-25 20:35:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 20:35:23,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:23,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:23,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-25 20:35:23,071 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:23,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash 593507918, now seen corresponding path program 1 times [2021-11-25 20:35:23,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:23,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647799042] [2021-11-25 20:35:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:23,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:23,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:23,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647799042] [2021-11-25 20:35:23,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647799042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:23,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:23,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:23,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744257905] [2021-11-25 20:35:23,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:23,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:23,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:23,179 INFO L87 Difference]: Start difference. First operand 406 states and 486 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:24,320 INFO L93 Difference]: Finished difference Result 665 states and 802 transitions. [2021-11-25 20:35:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:24,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-25 20:35:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:24,321 INFO L225 Difference]: With dead ends: 665 [2021-11-25 20:35:24,321 INFO L226 Difference]: Without dead ends: 660 [2021-11-25 20:35:24,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:35:24,322 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1679 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:24,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 1478 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:35:24,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-25 20:35:24,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 402. [2021-11-25 20:35:24,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 386 states have (on average 1.2461139896373057) internal successors, (481), 401 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 481 transitions. [2021-11-25 20:35:24,460 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 481 transitions. Word has length 96 [2021-11-25 20:35:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:24,460 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 481 transitions. [2021-11-25 20:35:24,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 481 transitions. [2021-11-25 20:35:24,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 20:35:24,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:24,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:24,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-25 20:35:24,461 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:24,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:24,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1986737205, now seen corresponding path program 1 times [2021-11-25 20:35:24,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:24,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833257497] [2021-11-25 20:35:24,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:24,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:24,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:24,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833257497] [2021-11-25 20:35:24,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833257497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:24,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:24,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:24,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563720101] [2021-11-25 20:35:24,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:24,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:24,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:24,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:24,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:24,561 INFO L87 Difference]: Start difference. First operand 402 states and 481 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:25,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:25,686 INFO L93 Difference]: Finished difference Result 701 states and 849 transitions. [2021-11-25 20:35:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:25,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-25 20:35:25,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:25,687 INFO L225 Difference]: With dead ends: 701 [2021-11-25 20:35:25,687 INFO L226 Difference]: Without dead ends: 684 [2021-11-25 20:35:25,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:35:25,688 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 1105 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:25,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 1701 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:35:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-11-25 20:35:25,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 398. [2021-11-25 20:35:25,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 382 states have (on average 1.2460732984293195) internal successors, (476), 397 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 476 transitions. [2021-11-25 20:35:25,879 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 476 transitions. Word has length 96 [2021-11-25 20:35:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:25,880 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 476 transitions. [2021-11-25 20:35:25,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:25,880 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 476 transitions. [2021-11-25 20:35:25,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 20:35:25,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:25,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:25,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-25 20:35:25,882 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:25,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash 960608400, now seen corresponding path program 1 times [2021-11-25 20:35:25,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:25,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739751486] [2021-11-25 20:35:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:25,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:25,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:25,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739751486] [2021-11-25 20:35:25,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739751486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:25,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:25,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:25,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152678605] [2021-11-25 20:35:25,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:26,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:26,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:26,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:26,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:26,001 INFO L87 Difference]: Start difference. First operand 398 states and 476 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:27,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:27,142 INFO L93 Difference]: Finished difference Result 661 states and 796 transitions. [2021-11-25 20:35:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:27,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-25 20:35:27,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:27,144 INFO L225 Difference]: With dead ends: 661 [2021-11-25 20:35:27,144 INFO L226 Difference]: Without dead ends: 656 [2021-11-25 20:35:27,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:35:27,144 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 1629 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:27,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1629 Valid, 1538 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:35:27,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-25 20:35:27,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 394. [2021-11-25 20:35:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 378 states have (on average 1.246031746031746) internal successors, (471), 393 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 471 transitions. [2021-11-25 20:35:27,292 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 471 transitions. Word has length 96 [2021-11-25 20:35:27,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:27,292 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 471 transitions. [2021-11-25 20:35:27,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:27,292 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 471 transitions. [2021-11-25 20:35:27,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 20:35:27,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:27,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:27,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-25 20:35:27,293 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1380049275, now seen corresponding path program 1 times [2021-11-25 20:35:27,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:27,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102650589] [2021-11-25 20:35:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:27,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:27,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:27,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102650589] [2021-11-25 20:35:27,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102650589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:27,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:27,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:27,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484331393] [2021-11-25 20:35:27,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:27,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:27,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:27,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:27,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:27,388 INFO L87 Difference]: Start difference. First operand 394 states and 471 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:28,437 INFO L93 Difference]: Finished difference Result 703 states and 853 transitions. [2021-11-25 20:35:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:28,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-25 20:35:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:28,438 INFO L225 Difference]: With dead ends: 703 [2021-11-25 20:35:28,439 INFO L226 Difference]: Without dead ends: 655 [2021-11-25 20:35:28,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:35:28,439 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 1677 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:28,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1677 Valid, 1479 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:35:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-11-25 20:35:28,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 393. [2021-11-25 20:35:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 377 states have (on average 1.2440318302387268) internal successors, (469), 392 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 469 transitions. [2021-11-25 20:35:28,560 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 469 transitions. Word has length 96 [2021-11-25 20:35:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:28,560 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 469 transitions. [2021-11-25 20:35:28,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:28,560 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 469 transitions. [2021-11-25 20:35:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 20:35:28,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:28,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:28,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-25 20:35:28,562 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:28,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:28,562 INFO L85 PathProgramCache]: Analyzing trace with hash -534826916, now seen corresponding path program 1 times [2021-11-25 20:35:28,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:28,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362240884] [2021-11-25 20:35:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:28,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:28,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:28,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362240884] [2021-11-25 20:35:28,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362240884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:28,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:28,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:28,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555418137] [2021-11-25 20:35:28,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:28,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:28,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:28,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:28,657 INFO L87 Difference]: Start difference. First operand 393 states and 469 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:29,906 INFO L93 Difference]: Finished difference Result 704 states and 853 transitions. [2021-11-25 20:35:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:29,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-25 20:35:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:29,907 INFO L225 Difference]: With dead ends: 704 [2021-11-25 20:35:29,907 INFO L226 Difference]: Without dead ends: 655 [2021-11-25 20:35:29,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:35:29,908 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 1632 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:29,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1632 Valid, 1540 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:35:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-11-25 20:35:30,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 389. [2021-11-25 20:35:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 373 states have (on average 1.2439678284182305) internal successors, (464), 388 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 464 transitions. [2021-11-25 20:35:30,026 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 464 transitions. Word has length 96 [2021-11-25 20:35:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:30,026 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 464 transitions. [2021-11-25 20:35:30,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:30,026 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 464 transitions. [2021-11-25 20:35:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 20:35:30,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:30,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:30,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-25 20:35:30,027 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:30,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:30,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1212843376, now seen corresponding path program 1 times [2021-11-25 20:35:30,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:30,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974766706] [2021-11-25 20:35:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:30,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:31,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:31,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974766706] [2021-11-25 20:35:31,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974766706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:31,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:31,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-25 20:35:31,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489554067] [2021-11-25 20:35:31,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:31,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-25 20:35:31,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-25 20:35:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 20:35:31,492 INFO L87 Difference]: Start difference. First operand 389 states and 464 transitions. Second operand has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:42,753 INFO L93 Difference]: Finished difference Result 1686 states and 2018 transitions. [2021-11-25 20:35:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-25 20:35:42,753 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-25 20:35:42,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:42,755 INFO L225 Difference]: With dead ends: 1686 [2021-11-25 20:35:42,755 INFO L226 Difference]: Without dead ends: 1635 [2021-11-25 20:35:42,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=547, Invalid=3235, Unknown=0, NotChecked=0, Total=3782 [2021-11-25 20:35:42,756 INFO L933 BasicCegarLoop]: 1278 mSDtfsCounter, 5458 mSDsluCounter, 23145 mSDsCounter, 0 mSdLazyCounter, 15088 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5458 SdHoareTripleChecker+Valid, 24280 SdHoareTripleChecker+Invalid, 15287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 15088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:42,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5458 Valid, 24280 Invalid, 15287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [199 Valid, 15088 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-25 20:35:42,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2021-11-25 20:35:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 414. [2021-11-25 20:35:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 398 states have (on average 1.2487437185929648) internal successors, (497), 413 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:42,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 497 transitions. [2021-11-25 20:35:42,894 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 497 transitions. Word has length 97 [2021-11-25 20:35:42,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:42,907 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 497 transitions. [2021-11-25 20:35:42,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:42,908 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 497 transitions. [2021-11-25 20:35:42,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 20:35:42,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:42,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:42,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-25 20:35:42,909 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:42,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:42,909 INFO L85 PathProgramCache]: Analyzing trace with hash 638588087, now seen corresponding path program 1 times [2021-11-25 20:35:42,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:42,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970552025] [2021-11-25 20:35:42,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:42,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:43,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:43,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970552025] [2021-11-25 20:35:43,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970552025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:43,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:43,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:35:43,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381671843] [2021-11-25 20:35:43,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:43,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:35:43,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:43,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:35:43,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:35:43,175 INFO L87 Difference]: Start difference. First operand 414 states and 497 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:44,555 INFO L93 Difference]: Finished difference Result 890 states and 1097 transitions. [2021-11-25 20:35:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:35:44,555 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-25 20:35:44,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:44,556 INFO L225 Difference]: With dead ends: 890 [2021-11-25 20:35:44,556 INFO L226 Difference]: Without dead ends: 810 [2021-11-25 20:35:44,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:35:44,557 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 2306 mSDsluCounter, 3684 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:44,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2306 Valid, 4379 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:35:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-11-25 20:35:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 381. [2021-11-25 20:35:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 368 states have (on average 1.2418478260869565) internal successors, (457), 380 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 457 transitions. [2021-11-25 20:35:44,708 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 457 transitions. Word has length 97 [2021-11-25 20:35:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:44,708 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 457 transitions. [2021-11-25 20:35:44,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 457 transitions. [2021-11-25 20:35:44,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 20:35:44,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:44,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:44,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-25 20:35:44,709 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1773183359, now seen corresponding path program 1 times [2021-11-25 20:35:44,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:44,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168451388] [2021-11-25 20:35:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:44,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:45,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:45,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168451388] [2021-11-25 20:35:45,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168451388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:45,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:45,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-25 20:35:45,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013965892] [2021-11-25 20:35:45,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:45,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-25 20:35:45,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:45,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-25 20:35:45,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-11-25 20:35:45,529 INFO L87 Difference]: Start difference. First operand 381 states and 457 transitions. Second operand has 22 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:49,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:49,439 INFO L93 Difference]: Finished difference Result 1117 states and 1369 transitions. [2021-11-25 20:35:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-25 20:35:49,440 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-25 20:35:49,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:49,441 INFO L225 Difference]: With dead ends: 1117 [2021-11-25 20:35:49,441 INFO L226 Difference]: Without dead ends: 1041 [2021-11-25 20:35:49,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=449, Invalid=1713, Unknown=0, NotChecked=0, Total=2162 [2021-11-25 20:35:49,441 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 3063 mSDsluCounter, 11244 mSDsCounter, 0 mSdLazyCounter, 3439 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3063 SdHoareTripleChecker+Valid, 11947 SdHoareTripleChecker+Invalid, 3533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:49,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3063 Valid, 11947 Invalid, 3533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3439 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 20:35:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-11-25 20:35:49,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 387. [2021-11-25 20:35:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 374 states have (on average 1.2379679144385027) internal successors, (463), 386 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 463 transitions. [2021-11-25 20:35:49,673 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 463 transitions. Word has length 97 [2021-11-25 20:35:49,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:49,673 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 463 transitions. [2021-11-25 20:35:49,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:49,673 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 463 transitions. [2021-11-25 20:35:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 20:35:49,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:49,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:49,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-25 20:35:49,674 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:49,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:49,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2131959411, now seen corresponding path program 1 times [2021-11-25 20:35:49,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:49,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403654790] [2021-11-25 20:35:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:49,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:49,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:49,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403654790] [2021-11-25 20:35:49,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403654790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:49,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:50,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:35:50,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800897074] [2021-11-25 20:35:50,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:50,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:35:50,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:50,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:35:50,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:35:50,001 INFO L87 Difference]: Start difference. First operand 387 states and 463 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:51,598 INFO L93 Difference]: Finished difference Result 799 states and 986 transitions. [2021-11-25 20:35:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:35:51,598 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-25 20:35:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:51,599 INFO L225 Difference]: With dead ends: 799 [2021-11-25 20:35:51,599 INFO L226 Difference]: Without dead ends: 728 [2021-11-25 20:35:51,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:35:51,600 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1752 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 4565 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:51,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1752 Valid, 4565 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:35:51,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-11-25 20:35:51,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 363. [2021-11-25 20:35:51,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 351 states have (on average 1.2307692307692308) internal successors, (432), 362 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 432 transitions. [2021-11-25 20:35:51,773 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 432 transitions. Word has length 97 [2021-11-25 20:35:51,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:51,773 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 432 transitions. [2021-11-25 20:35:51,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:51,773 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 432 transitions. [2021-11-25 20:35:51,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 20:35:51,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:51,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:51,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-25 20:35:51,775 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:51,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:51,775 INFO L85 PathProgramCache]: Analyzing trace with hash -133396310, now seen corresponding path program 1 times [2021-11-25 20:35:51,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:51,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57658967] [2021-11-25 20:35:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:51,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:52,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:52,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57658967] [2021-11-25 20:35:52,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57658967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:52,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:52,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:35:52,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67917688] [2021-11-25 20:35:52,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:52,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:35:52,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:52,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:35:52,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:35:52,119 INFO L87 Difference]: Start difference. First operand 363 states and 432 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:53,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:53,962 INFO L93 Difference]: Finished difference Result 935 states and 1145 transitions. [2021-11-25 20:35:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 20:35:53,963 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-25 20:35:53,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:53,964 INFO L225 Difference]: With dead ends: 935 [2021-11-25 20:35:53,964 INFO L226 Difference]: Without dead ends: 771 [2021-11-25 20:35:53,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:35:53,964 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 1748 mSDsluCounter, 4525 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 5118 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:53,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1748 Valid, 5118 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:35:53,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-11-25 20:35:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 246. [2021-11-25 20:35:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 239 states have (on average 1.205020920502092) internal successors, (288), 245 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 288 transitions. [2021-11-25 20:35:54,103 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 288 transitions. Word has length 97 [2021-11-25 20:35:54,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:54,103 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 288 transitions. [2021-11-25 20:35:54,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 288 transitions. [2021-11-25 20:35:54,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 20:35:54,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:54,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:54,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-25 20:35:54,105 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:54,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1851448540, now seen corresponding path program 1 times [2021-11-25 20:35:54,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:54,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983012482] [2021-11-25 20:35:54,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:54,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:54,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:54,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983012482] [2021-11-25 20:35:54,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983012482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:54,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:54,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:35:54,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245552954] [2021-11-25 20:35:54,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:54,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:35:54,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:54,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:35:54,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:35:54,273 INFO L87 Difference]: Start difference. First operand 246 states and 288 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:56,278 INFO L93 Difference]: Finished difference Result 781 states and 978 transitions. [2021-11-25 20:35:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 20:35:56,279 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-25 20:35:56,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:56,280 INFO L225 Difference]: With dead ends: 781 [2021-11-25 20:35:56,280 INFO L226 Difference]: Without dead ends: 716 [2021-11-25 20:35:56,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-25 20:35:56,280 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 2528 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2528 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:56,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2528 Valid, 1126 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:35:56,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-25 20:35:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 250. [2021-11-25 20:35:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 243 states have (on average 1.1975308641975309) internal successors, (291), 249 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 291 transitions. [2021-11-25 20:35:56,403 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 291 transitions. Word has length 98 [2021-11-25 20:35:56,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:56,403 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 291 transitions. [2021-11-25 20:35:56,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:56,403 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 291 transitions. [2021-11-25 20:35:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 20:35:56,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:56,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:56,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-25 20:35:56,404 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:56,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:56,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1648868085, now seen corresponding path program 1 times [2021-11-25 20:35:56,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:56,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414928175] [2021-11-25 20:35:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:56,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:56,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:56,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414928175] [2021-11-25 20:35:56,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414928175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:56,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:56,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:35:56,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421592013] [2021-11-25 20:35:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:56,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:35:56,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:35:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:56,519 INFO L87 Difference]: Start difference. First operand 250 states and 291 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) [2021-11-25 20:35:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:57,494 INFO L93 Difference]: Finished difference Result 439 states and 528 transitions. [2021-11-25 20:35:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:35:57,494 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 [2021-11-25 20:35:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:57,495 INFO L225 Difference]: With dead ends: 439 [2021-11-25 20:35:57,495 INFO L226 Difference]: Without dead ends: 432 [2021-11-25 20:35:57,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:35:57,496 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1197 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:57,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 642 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:35:57,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-25 20:35:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 250. [2021-11-25 20:35:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 243 states have (on average 1.1893004115226338) internal successors, (289), 249 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) [2021-11-25 20:35:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 289 transitions. [2021-11-25 20:35:57,625 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 289 transitions. Word has length 98 [2021-11-25 20:35:57,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:57,625 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 289 transitions. [2021-11-25 20:35:57,625 INFO L471 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) [2021-11-25 20:35:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 289 transitions. [2021-11-25 20:35:57,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 20:35:57,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:57,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:57,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-25 20:35:57,626 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:57,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:57,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1496260911, now seen corresponding path program 1 times [2021-11-25 20:35:57,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:57,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903092383] [2021-11-25 20:35:57,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:57,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:57,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:57,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903092383] [2021-11-25 20:35:57,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903092383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:57,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:57,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:35:57,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906268520] [2021-11-25 20:35:57,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:57,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:35:57,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:35:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:35:57,938 INFO L87 Difference]: Start difference. First operand 250 states and 289 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:58,754 INFO L93 Difference]: Finished difference Result 389 states and 461 transitions. [2021-11-25 20:35:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 20:35:58,754 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-25 20:35:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:58,755 INFO L225 Difference]: With dead ends: 389 [2021-11-25 20:35:58,755 INFO L226 Difference]: Without dead ends: 338 [2021-11-25 20:35:58,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:35:58,755 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1289 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:58,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1289 Valid, 1201 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:35:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-25 20:35:58,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 221. [2021-11-25 20:35:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 215 states have (on average 1.1767441860465115) internal successors, (253), 220 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 253 transitions. [2021-11-25 20:35:58,882 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 253 transitions. Word has length 98 [2021-11-25 20:35:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:58,882 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 253 transitions. [2021-11-25 20:35:58,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:58,883 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 253 transitions. [2021-11-25 20:35:58,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 20:35:58,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:58,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:58,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-25 20:35:58,883 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:35:58,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash 162352470, now seen corresponding path program 1 times [2021-11-25 20:35:58,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:58,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955170586] [2021-11-25 20:35:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:58,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:59,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:59,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955170586] [2021-11-25 20:35:59,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955170586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:59,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:59,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 20:35:59,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636028212] [2021-11-25 20:35:59,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:59,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 20:35:59,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:59,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 20:35:59,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:35:59,414 INFO L87 Difference]: Start difference. First operand 221 states and 253 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:01,297 INFO L93 Difference]: Finished difference Result 660 states and 805 transitions. [2021-11-25 20:36:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 20:36:01,297 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-25 20:36:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:01,298 INFO L225 Difference]: With dead ends: 660 [2021-11-25 20:36:01,298 INFO L226 Difference]: Without dead ends: 589 [2021-11-25 20:36:01,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 20:36:01,299 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 1851 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 3763 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:01,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1851 Valid, 3763 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:36:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-11-25 20:36:01,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 215. [2021-11-25 20:36:01,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 209 states have (on average 1.1770334928229664) internal successors, (246), 214 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 246 transitions. [2021-11-25 20:36:01,415 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 246 transitions. Word has length 98 [2021-11-25 20:36:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:01,415 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 246 transitions. [2021-11-25 20:36:01,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 246 transitions. [2021-11-25 20:36:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 20:36:01,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:01,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:01,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-25 20:36:01,416 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1432987129, now seen corresponding path program 1 times [2021-11-25 20:36:01,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:01,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938701483] [2021-11-25 20:36:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:01,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:01,688 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:01,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938701483] [2021-11-25 20:36:01,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938701483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:01,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:01,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:36:01,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103191199] [2021-11-25 20:36:01,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:01,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:36:01,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:36:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:36:01,689 INFO L87 Difference]: Start difference. First operand 215 states and 246 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:02,445 INFO L93 Difference]: Finished difference Result 358 states and 421 transitions. [2021-11-25 20:36:02,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:36:02,446 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-25 20:36:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:02,446 INFO L225 Difference]: With dead ends: 358 [2021-11-25 20:36:02,446 INFO L226 Difference]: Without dead ends: 307 [2021-11-25 20:36:02,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:36:02,447 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 1217 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:02,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1217 Valid, 1223 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:36:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-25 20:36:02,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 211. [2021-11-25 20:36:02,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 206 states have (on average 1.1699029126213591) internal successors, (241), 210 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2021-11-25 20:36:02,567 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 98 [2021-11-25 20:36:02,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:02,568 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2021-11-25 20:36:02,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2021-11-25 20:36:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 20:36:02,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:02,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:02,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-25 20:36:02,569 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:02,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1580439968, now seen corresponding path program 1 times [2021-11-25 20:36:02,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:02,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717894490] [2021-11-25 20:36:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:02,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:02,870 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:02,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717894490] [2021-11-25 20:36:02,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717894490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:02,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:02,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:36:02,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78185664] [2021-11-25 20:36:02,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:02,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:36:02,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:36:02,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:36:02,872 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:04,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:04,358 INFO L93 Difference]: Finished difference Result 546 states and 656 transitions. [2021-11-25 20:36:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:36:04,358 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-25 20:36:04,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:04,359 INFO L225 Difference]: With dead ends: 546 [2021-11-25 20:36:04,359 INFO L226 Difference]: Without dead ends: 464 [2021-11-25 20:36:04,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:36:04,359 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 1105 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:04,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 2495 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:36:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-11-25 20:36:04,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 176. [2021-11-25 20:36:04,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 173 states have (on average 1.1560693641618498) internal successors, (200), 175 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:04,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 200 transitions. [2021-11-25 20:36:04,476 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 200 transitions. Word has length 98 [2021-11-25 20:36:04,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:04,476 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 200 transitions. [2021-11-25 20:36:04,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:04,476 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 200 transitions. [2021-11-25 20:36:04,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-25 20:36:04,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:04,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:04,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-25 20:36:04,477 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:04,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:04,477 INFO L85 PathProgramCache]: Analyzing trace with hash 526405733, now seen corresponding path program 1 times [2021-11-25 20:36:04,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:04,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238768407] [2021-11-25 20:36:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:04,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:04,577 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:04,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238768407] [2021-11-25 20:36:04,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238768407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:04,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:04,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:36:04,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930292509] [2021-11-25 20:36:04,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:04,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:36:04,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:04,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:36:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:36:04,579 INFO L87 Difference]: Start difference. First operand 176 states and 200 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:05,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:05,140 INFO L93 Difference]: Finished difference Result 323 states and 383 transitions. [2021-11-25 20:36:05,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:36:05,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-25 20:36:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:05,141 INFO L225 Difference]: With dead ends: 323 [2021-11-25 20:36:05,141 INFO L226 Difference]: Without dead ends: 258 [2021-11-25 20:36:05,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:36:05,141 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 502 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:05,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 547 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:36:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-25 20:36:05,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 172. [2021-11-25 20:36:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 169 states have (on average 1.1538461538461537) internal successors, (195), 171 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 195 transitions. [2021-11-25 20:36:05,253 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 195 transitions. Word has length 99 [2021-11-25 20:36:05,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:05,253 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 195 transitions. [2021-11-25 20:36:05,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:05,253 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 195 transitions. [2021-11-25 20:36:05,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 20:36:05,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:05,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:05,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-25 20:36:05,254 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:05,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1289791201, now seen corresponding path program 1 times [2021-11-25 20:36:05,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:05,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449973135] [2021-11-25 20:36:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:05,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:06,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:06,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449973135] [2021-11-25 20:36:06,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449973135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:06,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:06,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-25 20:36:06,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4680189] [2021-11-25 20:36:06,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:06,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-25 20:36:06,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-25 20:36:06,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 20:36:06,888 INFO L87 Difference]: Start difference. First operand 172 states and 195 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:12,967 INFO L93 Difference]: Finished difference Result 820 states and 992 transitions. [2021-11-25 20:36:12,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 20:36:12,968 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-25 20:36:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:12,969 INFO L225 Difference]: With dead ends: 820 [2021-11-25 20:36:12,969 INFO L226 Difference]: Without dead ends: 814 [2021-11-25 20:36:12,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=539, Invalid=3001, Unknown=0, NotChecked=0, Total=3540 [2021-11-25 20:36:12,969 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 2201 mSDsluCounter, 10161 mSDsCounter, 0 mSdLazyCounter, 5356 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 10570 SdHoareTripleChecker+Invalid, 5426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 5356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:12,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2201 Valid, 10570 Invalid, 5426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 5356 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 20:36:12,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-11-25 20:36:13,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 198. [2021-11-25 20:36:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 195 states have (on average 1.1641025641025642) internal successors, (227), 197 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:13,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 227 transitions. [2021-11-25 20:36:13,145 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 227 transitions. Word has length 100 [2021-11-25 20:36:13,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:13,145 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 227 transitions. [2021-11-25 20:36:13,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:13,145 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 227 transitions. [2021-11-25 20:36:13,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 20:36:13,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:13,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:13,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-25 20:36:13,146 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:13,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:13,146 INFO L85 PathProgramCache]: Analyzing trace with hash -665675578, now seen corresponding path program 1 times [2021-11-25 20:36:13,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:13,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562869901] [2021-11-25 20:36:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:13,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:14,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:14,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562869901] [2021-11-25 20:36:14,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562869901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:14,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:14,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-25 20:36:14,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091551340] [2021-11-25 20:36:14,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:14,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-25 20:36:14,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:14,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-25 20:36:14,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:36:14,571 INFO L87 Difference]: Start difference. First operand 198 states and 227 transitions. Second operand has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:19,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:19,867 INFO L93 Difference]: Finished difference Result 725 states and 866 transitions. [2021-11-25 20:36:19,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-25 20:36:19,867 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-25 20:36:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:19,868 INFO L225 Difference]: With dead ends: 725 [2021-11-25 20:36:19,868 INFO L226 Difference]: Without dead ends: 717 [2021-11-25 20:36:19,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=520, Invalid=2902, Unknown=0, NotChecked=0, Total=3422 [2021-11-25 20:36:19,869 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 2180 mSDsluCounter, 7958 mSDsCounter, 0 mSdLazyCounter, 4277 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 8384 SdHoareTripleChecker+Invalid, 4349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 4277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:19,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 8384 Invalid, 4349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 4277 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-25 20:36:19,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-11-25 20:36:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 202. [2021-11-25 20:36:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 199 states have (on average 1.1658291457286432) internal successors, (232), 201 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2021-11-25 20:36:20,014 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 100 [2021-11-25 20:36:20,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:20,014 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2021-11-25 20:36:20,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:20,014 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2021-11-25 20:36:20,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 20:36:20,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:20,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:20,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-25 20:36:20,015 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:20,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:20,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2052645067, now seen corresponding path program 1 times [2021-11-25 20:36:20,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:20,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148623391] [2021-11-25 20:36:20,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:20,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:20,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:20,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148623391] [2021-11-25 20:36:20,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148623391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:20,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:20,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:36:20,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16017890] [2021-11-25 20:36:20,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:20,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:36:20,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:20,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:36:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:36:20,293 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:21,322 INFO L93 Difference]: Finished difference Result 406 states and 489 transitions. [2021-11-25 20:36:21,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:36:21,322 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-25 20:36:21,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:21,323 INFO L225 Difference]: With dead ends: 406 [2021-11-25 20:36:21,323 INFO L226 Difference]: Without dead ends: 391 [2021-11-25 20:36:21,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:36:21,323 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 797 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:21,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 1753 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:36:21,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-25 20:36:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 186. [2021-11-25 20:36:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 184 states have (on average 1.1630434782608696) internal successors, (214), 185 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 214 transitions. [2021-11-25 20:36:21,476 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 214 transitions. Word has length 101 [2021-11-25 20:36:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:21,476 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 214 transitions. [2021-11-25 20:36:21,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:21,476 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 214 transitions. [2021-11-25 20:36:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 20:36:21,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:21,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:21,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-25 20:36:21,478 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:21,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:21,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1441605077, now seen corresponding path program 1 times [2021-11-25 20:36:21,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:21,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576836658] [2021-11-25 20:36:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:21,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:21,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:21,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576836658] [2021-11-25 20:36:21,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576836658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:21,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:21,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:36:21,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968307412] [2021-11-25 20:36:21,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:21,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:36:21,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:21,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:36:21,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:36:21,792 INFO L87 Difference]: Start difference. First operand 186 states and 214 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:22,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:22,879 INFO L93 Difference]: Finished difference Result 354 states and 430 transitions. [2021-11-25 20:36:22,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:36:22,879 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-25 20:36:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:22,879 INFO L225 Difference]: With dead ends: 354 [2021-11-25 20:36:22,879 INFO L226 Difference]: Without dead ends: 348 [2021-11-25 20:36:22,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:36:22,880 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 780 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:22,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 1638 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:36:22,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-11-25 20:36:23,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 154. [2021-11-25 20:36:23,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.1503267973856208) internal successors, (176), 153 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 176 transitions. [2021-11-25 20:36:23,026 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 176 transitions. Word has length 101 [2021-11-25 20:36:23,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:23,026 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 176 transitions. [2021-11-25 20:36:23,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 176 transitions. [2021-11-25 20:36:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 20:36:23,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:23,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:23,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-25 20:36:23,027 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:23,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:23,027 INFO L85 PathProgramCache]: Analyzing trace with hash 457984807, now seen corresponding path program 1 times [2021-11-25 20:36:23,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:23,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793906891] [2021-11-25 20:36:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:23,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:23,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:23,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793906891] [2021-11-25 20:36:23,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793906891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:23,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:23,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:36:23,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980247926] [2021-11-25 20:36:23,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:23,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:36:23,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:23,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:36:23,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:23,086 INFO L87 Difference]: Start difference. First operand 154 states and 176 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:23,334 INFO L93 Difference]: Finished difference Result 248 states and 300 transitions. [2021-11-25 20:36:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:36:23,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-25 20:36:23,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:23,335 INFO L225 Difference]: With dead ends: 248 [2021-11-25 20:36:23,335 INFO L226 Difference]: Without dead ends: 201 [2021-11-25 20:36:23,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:23,335 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 72 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 334 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 [2021-11-25 20:36:23,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 334 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:36:23,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-25 20:36:23,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2021-11-25 20:36:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.190721649484536) internal successors, (231), 194 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 231 transitions. [2021-11-25 20:36:23,530 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 231 transitions. Word has length 118 [2021-11-25 20:36:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:23,530 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 231 transitions. [2021-11-25 20:36:23,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:23,530 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 231 transitions. [2021-11-25 20:36:23,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-25 20:36:23,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:23,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:23,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-25 20:36:23,531 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:23,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:23,531 INFO L85 PathProgramCache]: Analyzing trace with hash 272871055, now seen corresponding path program 1 times [2021-11-25 20:36:23,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:23,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083271785] [2021-11-25 20:36:23,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:23,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:23,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:23,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083271785] [2021-11-25 20:36:23,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083271785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:23,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:23,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:36:23,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7767094] [2021-11-25 20:36:23,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:23,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:36:23,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:36:23,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:23,583 INFO L87 Difference]: Start difference. First operand 195 states and 231 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:24,009 INFO L93 Difference]: Finished difference Result 371 states and 465 transitions. [2021-11-25 20:36:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:36:24,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-25 20:36:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:24,010 INFO L225 Difference]: With dead ends: 371 [2021-11-25 20:36:24,010 INFO L226 Difference]: Without dead ends: 283 [2021-11-25 20:36:24,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:24,011 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 65 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 334 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 [2021-11-25 20:36:24,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 334 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:36:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-25 20:36:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 273. [2021-11-25 20:36:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.2316176470588236) internal successors, (335), 272 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:24,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 335 transitions. [2021-11-25 20:36:24,372 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 335 transitions. Word has length 121 [2021-11-25 20:36:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:24,372 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 335 transitions. [2021-11-25 20:36:24,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:24,372 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 335 transitions. [2021-11-25 20:36:24,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-25 20:36:24,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:24,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:24,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-25 20:36:24,373 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:24,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:24,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1770983763, now seen corresponding path program 1 times [2021-11-25 20:36:24,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:24,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036619500] [2021-11-25 20:36:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:24,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:24,430 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:24,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036619500] [2021-11-25 20:36:24,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036619500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:24,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:24,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:36:24,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585081425] [2021-11-25 20:36:24,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:24,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:36:24,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:24,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:36:24,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:24,432 INFO L87 Difference]: Start difference. First operand 273 states and 335 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:25,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:25,176 INFO L93 Difference]: Finished difference Result 605 states and 777 transitions. [2021-11-25 20:36:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:36:25,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-25 20:36:25,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:25,177 INFO L225 Difference]: With dead ends: 605 [2021-11-25 20:36:25,177 INFO L226 Difference]: Without dead ends: 439 [2021-11-25 20:36:25,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:25,178 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 58 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 334 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 [2021-11-25 20:36:25,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 334 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:36:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-25 20:36:25,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 421. [2021-11-25 20:36:25,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.2642857142857142) internal successors, (531), 420 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 531 transitions. [2021-11-25 20:36:25,860 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 531 transitions. Word has length 124 [2021-11-25 20:36:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:25,860 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 531 transitions. [2021-11-25 20:36:25,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 531 transitions. [2021-11-25 20:36:25,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 20:36:25,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:25,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:25,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-25 20:36:25,861 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:25,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1552703886, now seen corresponding path program 1 times [2021-11-25 20:36:25,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:25,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539169286] [2021-11-25 20:36:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:25,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:25,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:25,906 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:25,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539169286] [2021-11-25 20:36:25,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539169286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:25,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:25,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:36:25,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008202525] [2021-11-25 20:36:25,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:25,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:36:25,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:25,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:36:25,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:25,907 INFO L87 Difference]: Start difference. First operand 421 states and 531 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:27,288 INFO L93 Difference]: Finished difference Result 1049 states and 1365 transitions. [2021-11-25 20:36:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:36:27,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-25 20:36:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:27,290 INFO L225 Difference]: With dead ends: 1049 [2021-11-25 20:36:27,290 INFO L226 Difference]: Without dead ends: 735 [2021-11-25 20:36:27,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:27,291 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 51 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 334 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 [2021-11-25 20:36:27,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 334 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:36:27,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-25 20:36:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 701. [2021-11-25 20:36:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.2842857142857143) internal successors, (899), 700 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 899 transitions. [2021-11-25 20:36:28,624 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 899 transitions. Word has length 127 [2021-11-25 20:36:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:28,624 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 899 transitions. [2021-11-25 20:36:28,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 899 transitions. [2021-11-25 20:36:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 20:36:28,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:28,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:28,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-25 20:36:28,626 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:28,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:28,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1361539994, now seen corresponding path program 1 times [2021-11-25 20:36:28,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:28,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385320875] [2021-11-25 20:36:28,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:28,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:28,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:28,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385320875] [2021-11-25 20:36:28,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385320875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:28,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:28,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:36:28,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247916428] [2021-11-25 20:36:28,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:28,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:36:28,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:36:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:28,688 INFO L87 Difference]: Start difference. First operand 701 states and 899 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:31,324 INFO L93 Difference]: Finished difference Result 1889 states and 2469 transitions. [2021-11-25 20:36:31,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:36:31,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-25 20:36:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:31,326 INFO L225 Difference]: With dead ends: 1889 [2021-11-25 20:36:31,326 INFO L226 Difference]: Without dead ends: 1295 [2021-11-25 20:36:31,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:31,327 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 44 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 334 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 [2021-11-25 20:36:31,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 334 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:36:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2021-11-25 20:36:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1229. [2021-11-25 20:36:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 1.2923452768729642) internal successors, (1587), 1228 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:33,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1587 transitions. [2021-11-25 20:36:33,890 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1587 transitions. Word has length 130 [2021-11-25 20:36:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:33,890 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1587 transitions. [2021-11-25 20:36:33,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:33,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1587 transitions. [2021-11-25 20:36:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 20:36:33,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:33,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:33,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-25 20:36:33,892 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:33,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:33,892 INFO L85 PathProgramCache]: Analyzing trace with hash -935762193, now seen corresponding path program 1 times [2021-11-25 20:36:33,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:33,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088939903] [2021-11-25 20:36:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:33,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:33,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:33,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088939903] [2021-11-25 20:36:33,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088939903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:33,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:33,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:36:33,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853651928] [2021-11-25 20:36:33,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:33,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:36:33,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:33,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:36:33,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:33,950 INFO L87 Difference]: Start difference. First operand 1229 states and 1587 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:39,028 INFO L93 Difference]: Finished difference Result 3473 states and 4533 transitions. [2021-11-25 20:36:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:36:39,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-25 20:36:39,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:39,031 INFO L225 Difference]: With dead ends: 3473 [2021-11-25 20:36:39,031 INFO L226 Difference]: Without dead ends: 2351 [2021-11-25 20:36:39,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:36:39,033 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 34 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 334 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 [2021-11-25 20:36:39,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 334 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:36:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-11-25 20:36:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2221. [2021-11-25 20:36:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2220 states have (on average 1.2914414414414415) internal successors, (2867), 2220 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2867 transitions. [2021-11-25 20:36:43,906 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2867 transitions. Word has length 133 [2021-11-25 20:36:43,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:43,906 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 2867 transitions. [2021-11-25 20:36:43,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2867 transitions. [2021-11-25 20:36:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-25 20:36:43,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:43,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:43,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-25 20:36:43,907 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:36:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1161915133, now seen corresponding path program 1 times [2021-11-25 20:36:43,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:43,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691852955] [2021-11-25 20:36:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:43,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:43,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:43,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691852955] [2021-11-25 20:36:43,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691852955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:43,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:43,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:36:43,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971795824] [2021-11-25 20:36:43,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:43,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:36:43,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:43,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:36:43,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:36:43,983 INFO L87 Difference]: Start difference. First operand 2221 states and 2867 transitions. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:59,310 INFO L93 Difference]: Finished difference Result 8835 states and 11459 transitions. [2021-11-25 20:36:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:36:59,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-25 20:36:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:59,317 INFO L225 Difference]: With dead ends: 8835 [2021-11-25 20:36:59,317 INFO L226 Difference]: Without dead ends: 6721 [2021-11-25 20:36:59,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:36:59,321 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 1125 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:59,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2054 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:36:59,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2021-11-25 20:37:06,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 2986. [2021-11-25 20:37:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2986 states, 2985 states have (on average 1.2810720268006701) internal successors, (3824), 2985 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:37:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 3824 transitions. [2021-11-25 20:37:06,151 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 3824 transitions. Word has length 136 [2021-11-25 20:37:06,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:37:06,151 INFO L470 AbstractCegarLoop]: Abstraction has 2986 states and 3824 transitions. [2021-11-25 20:37:06,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:37:06,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 3824 transitions. [2021-11-25 20:37:06,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 20:37:06,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:37:06,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:37:06,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-25 20:37:06,152 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:37:06,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:37:06,153 INFO L85 PathProgramCache]: Analyzing trace with hash -33577069, now seen corresponding path program 1 times [2021-11-25 20:37:06,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:37:06,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710937777] [2021-11-25 20:37:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:06,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:37:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:37:06,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:37:06,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710937777] [2021-11-25 20:37:06,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710937777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:37:06,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:37:06,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:37:06,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928814407] [2021-11-25 20:37:06,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:37:06,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:37:06,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:37:06,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:37:06,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:37:06,215 INFO L87 Difference]: Start difference. First operand 2986 states and 3824 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:37:15,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:15,628 INFO L93 Difference]: Finished difference Result 7083 states and 9103 transitions. [2021-11-25 20:37:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:37:15,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-25 20:37:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:15,632 INFO L225 Difference]: With dead ends: 7083 [2021-11-25 20:37:15,632 INFO L226 Difference]: Without dead ends: 4204 [2021-11-25 20:37:15,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:37:15,635 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 91 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 258 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 [2021-11-25 20:37:15,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 258 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:37:15,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-11-25 20:37:25,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 4202. [2021-11-25 20:37:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 4201 states have (on average 1.2756486550821233) internal successors, (5359), 4201 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:37:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 5359 transitions. [2021-11-25 20:37:25,303 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 5359 transitions. Word has length 138 [2021-11-25 20:37:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:37:25,304 INFO L470 AbstractCegarLoop]: Abstraction has 4202 states and 5359 transitions. [2021-11-25 20:37:25,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:37:25,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 5359 transitions. [2021-11-25 20:37:25,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 20:37:25,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:37:25,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:37:25,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-25 20:37:25,305 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:37:25,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:37:25,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1875011963, now seen corresponding path program 1 times [2021-11-25 20:37:25,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:37:25,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873930696] [2021-11-25 20:37:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:25,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:37:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:37:25,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:37:25,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873930696] [2021-11-25 20:37:25,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873930696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:37:25,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:37:25,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:37:25,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80440497] [2021-11-25 20:37:25,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:37:25,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:37:25,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:37:25,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:37:25,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:37:25,356 INFO L87 Difference]: Start difference. First operand 4202 states and 5359 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:37:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:34,971 INFO L93 Difference]: Finished difference Result 8299 states and 10605 transitions. [2021-11-25 20:37:34,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:37:34,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-25 20:37:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:34,976 INFO L225 Difference]: With dead ends: 8299 [2021-11-25 20:37:34,976 INFO L226 Difference]: Without dead ends: 4204 [2021-11-25 20:37:34,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:37:34,980 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 34 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:37:34,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 269 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:37:34,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-11-25 20:37:44,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 4202. [2021-11-25 20:37:44,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 4201 states have (on average 1.2754106165198762) internal successors, (5358), 4201 states have internal predecessors, (5358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:37:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 5358 transitions. [2021-11-25 20:37:44,799 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 5358 transitions. Word has length 138 [2021-11-25 20:37:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:37:44,800 INFO L470 AbstractCegarLoop]: Abstraction has 4202 states and 5358 transitions. [2021-11-25 20:37:44,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:37:44,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 5358 transitions. [2021-11-25 20:37:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-25 20:37:44,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:37:44,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:37:44,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-25 20:37:44,801 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:37:44,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:37:44,801 INFO L85 PathProgramCache]: Analyzing trace with hash -2329038, now seen corresponding path program 1 times [2021-11-25 20:37:44,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:37:44,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290624966] [2021-11-25 20:37:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:44,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:37:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:37:44,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:37:44,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290624966] [2021-11-25 20:37:44,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290624966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:37:44,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:37:44,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:37:44,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347409082] [2021-11-25 20:37:44,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:37:44,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:37:44,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:37:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:37:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:37:44,897 INFO L87 Difference]: Start difference. First operand 4202 states and 5358 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:37:59,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:59,116 INFO L93 Difference]: Finished difference Result 6010 states and 7586 transitions. [2021-11-25 20:37:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:37:59,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-25 20:37:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:59,122 INFO L225 Difference]: With dead ends: 6010 [2021-11-25 20:37:59,122 INFO L226 Difference]: Without dead ends: 6008 [2021-11-25 20:37:59,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:37:59,124 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 367 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:37:59,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1083 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:37:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6008 states. [2021-11-25 20:38:09,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6008 to 4202. [2021-11-25 20:38:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 4201 states have (on average 1.2601761485360627) internal successors, (5294), 4201 states have internal predecessors, (5294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:38:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 5294 transitions. [2021-11-25 20:38:09,089 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 5294 transitions. Word has length 139 [2021-11-25 20:38:09,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:38:09,089 INFO L470 AbstractCegarLoop]: Abstraction has 4202 states and 5294 transitions. [2021-11-25 20:38:09,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:38:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 5294 transitions. [2021-11-25 20:38:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-25 20:38:09,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:38:09,091 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:38:09,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-25 20:38:09,091 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:38:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:38:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash -218574846, now seen corresponding path program 1 times [2021-11-25 20:38:09,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:38:09,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104828577] [2021-11-25 20:38:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:38:09,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:38:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:38:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 20:38:09,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:38:09,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104828577] [2021-11-25 20:38:09,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104828577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:38:09,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:38:09,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:38:09,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353420224] [2021-11-25 20:38:09,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:38:09,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:38:09,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:38:09,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:38:09,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:38:09,235 INFO L87 Difference]: Start difference. First operand 4202 states and 5294 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:38:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:38:25,277 INFO L93 Difference]: Finished difference Result 10597 states and 13373 transitions. [2021-11-25 20:38:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:38:25,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-25 20:38:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:38:25,284 INFO L225 Difference]: With dead ends: 10597 [2021-11-25 20:38:25,285 INFO L226 Difference]: Without dead ends: 6496 [2021-11-25 20:38:25,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:38:25,289 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 432 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:38:25,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 442 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:38:25,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6496 states. [2021-11-25 20:38:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6496 to 4202. [2021-11-25 20:38:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 4201 states have (on average 1.2599381099738158) internal successors, (5293), 4201 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:38:34,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 5293 transitions. [2021-11-25 20:38:34,843 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 5293 transitions. Word has length 157 [2021-11-25 20:38:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:38:34,844 INFO L470 AbstractCegarLoop]: Abstraction has 4202 states and 5293 transitions. [2021-11-25 20:38:34,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:38:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 5293 transitions. [2021-11-25 20:38:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-25 20:38:34,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:38:34,845 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:38:34,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-25 20:38:34,845 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:38:34,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:38:34,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1879004835, now seen corresponding path program 1 times [2021-11-25 20:38:34,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:38:34,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729726733] [2021-11-25 20:38:34,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:38:34,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:38:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:38:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 20:38:36,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:38:36,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729726733] [2021-11-25 20:38:36,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729726733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:38:36,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:38:36,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-25 20:38:36,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076637731] [2021-11-25 20:38:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:38:36,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-25 20:38:36,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:38:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-25 20:38:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2021-11-25 20:38:36,116 INFO L87 Difference]: Start difference. First operand 4202 states and 5293 transitions. Second operand has 31 states, 31 states have (on average 4.806451612903226) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:22,884 INFO L93 Difference]: Finished difference Result 22113 states and 27959 transitions. [2021-11-25 20:39:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-25 20:39:22,884 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.806451612903226) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-25 20:39:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:22,905 INFO L225 Difference]: With dead ends: 22113 [2021-11-25 20:39:22,905 INFO L226 Difference]: Without dead ends: 18011 [2021-11-25 20:39:22,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=507, Invalid=2685, Unknown=0, NotChecked=0, Total=3192 [2021-11-25 20:39:22,911 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 1699 mSDsluCounter, 7898 mSDsCounter, 0 mSdLazyCounter, 4873 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 8198 SdHoareTripleChecker+Invalid, 4932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 4873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:22,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 8198 Invalid, 4932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 4873 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-25 20:39:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18011 states. [2021-11-25 20:39:32,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18011 to 4227. [2021-11-25 20:39:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4227 states, 4226 states have (on average 1.2593469001419781) internal successors, (5322), 4226 states have internal predecessors, (5322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:32,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 5322 transitions. [2021-11-25 20:39:32,763 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 5322 transitions. Word has length 159 [2021-11-25 20:39:32,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:32,763 INFO L470 AbstractCegarLoop]: Abstraction has 4227 states and 5322 transitions. [2021-11-25 20:39:32,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.806451612903226) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 5322 transitions. [2021-11-25 20:39:32,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-25 20:39:32,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:32,765 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:32,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-25 20:39:32,765 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 20:39:32,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:32,765 INFO L85 PathProgramCache]: Analyzing trace with hash -988807379, now seen corresponding path program 1 times [2021-11-25 20:39:32,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:32,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276150619] [2021-11-25 20:39:32,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:32,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:40,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:40,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:40,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276150619] [2021-11-25 20:39:40,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276150619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:40,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319397513] [2021-11-25 20:39:40,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:40,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:40,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:40,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:39:40,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3e948f-5269-4429-948e-6d0c01ac4af4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:39:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:40,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-25 20:39:40,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:40:28,119 INFO L328 TraceCheckSpWp]: Computing backward predicates...