./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V --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 0e3838e9b0fe368810fc333620df3a05f4f501b739959aedb61fcfde88b41758 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:32:23,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:32:23,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:32:23,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:32:23,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:32:23,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:32:23,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:32:23,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:32:23,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:32:23,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:32:23,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:32:23,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:32:23,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:32:23,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:32:23,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:32:23,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:32:23,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:32:23,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:32:23,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:32:23,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:32:23,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:32:23,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:32:23,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:32:23,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:32:23,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:32:23,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:32:23,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:32:23,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:32:23,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:32:23,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:32:23,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:32:23,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:32:23,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:32:23,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:32:23,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:32:23,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:32:23,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:32:23,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:32:23,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:32:23,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:32:23,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:32:23,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:32:23,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:32:23,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:32:23,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:32:23,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:32:23,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:32:24,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:32:24,003 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:32:24,004 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:32:24,004 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:32:24,004 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:32:24,005 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:32:24,006 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:32:24,006 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:32:24,006 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:32:24,006 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:32:24,007 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:32:24,007 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:32:24,007 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:32:24,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:32:24,009 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:32:24,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:32:24,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:32:24,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:32:24,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:32:24,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:32:24,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:32:24,012 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:32:24,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:32:24,013 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:32:24,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:32:24,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:32:24,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:32:24,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:32:24,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:32:24,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:32:24,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:32:24,015 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:32:24,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:32:24,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:32:24,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:32:24,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:32:24,016 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_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e3838e9b0fe368810fc333620df3a05f4f501b739959aedb61fcfde88b41758 [2021-11-23 03:32:24,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:32:24,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:32:24,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:32:24,423 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:32:24,424 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:32:24,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-23 03:32:24,505 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/data/9959d32c6/4633b4dcfccc4585952814ad74bad4a9/FLAGb1aa367fa [2021-11-23 03:32:25,812 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:32:25,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-23 03:32:25,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/data/9959d32c6/4633b4dcfccc4585952814ad74bad4a9/FLAGb1aa367fa [2021-11-23 03:32:26,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/data/9959d32c6/4633b4dcfccc4585952814ad74bad4a9 [2021-11-23 03:32:26,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:32:26,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:32:26,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:32:26,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:32:26,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:32:26,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:26" (1/1) ... [2021-11-23 03:32:26,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d6c18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:26, skipping insertion in model container [2021-11-23 03:32:26,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:26" (1/1) ... [2021-11-23 03:32:26,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:32:26,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:32:28,254 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[93880,93893] [2021-11-23 03:32:28,377 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[127977,127990] [2021-11-23 03:32:28,567 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[184673,184686] [2021-11-23 03:32:28,682 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[220032,220045] [2021-11-23 03:32:28,714 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[229801,229814] [2021-11-23 03:32:28,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[232051,232064] [2021-11-23 03:32:28,777 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[249702,249715] [2021-11-23 03:32:28,802 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[257723,257736] [2021-11-23 03:32:28,904 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[288453,288466] [2021-11-23 03:32:29,030 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[318193,318206] [2021-11-23 03:32:29,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[406252,406265] [2021-11-23 03:32:29,387 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[425331,425344] [2021-11-23 03:32:29,447 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[445911,445924] [2021-11-23 03:32:29,471 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[453486,453499] [2021-11-23 03:32:29,483 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[457284,457297] [2021-11-23 03:32:29,526 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[472883,472896] [2021-11-23 03:32:29,573 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[488771,488784] [2021-11-23 03:32:29,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[523323,523336] [2021-11-23 03:32:30,002 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[617972,617985] [2021-11-23 03:32:30,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:32:30,340 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:32:30,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[93880,93893] [2021-11-23 03:32:30,957 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[127977,127990] [2021-11-23 03:32:31,113 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[184673,184686] [2021-11-23 03:32:31,203 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[220032,220045] [2021-11-23 03:32:31,230 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[229801,229814] [2021-11-23 03:32:31,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[232051,232064] [2021-11-23 03:32:31,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[249702,249715] [2021-11-23 03:32:31,305 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[257723,257736] [2021-11-23 03:32:31,388 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[288453,288466] [2021-11-23 03:32:31,484 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[318193,318206] [2021-11-23 03:32:31,701 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[406252,406265] [2021-11-23 03:32:31,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[425331,425344] [2021-11-23 03:32:31,803 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[445911,445924] [2021-11-23 03:32:31,825 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[453486,453499] [2021-11-23 03:32:31,836 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[457284,457297] [2021-11-23 03:32:31,875 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[472883,472896] [2021-11-23 03:32:31,939 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[488771,488784] [2021-11-23 03:32:32,023 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[523323,523336] [2021-11-23 03:32:32,250 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_5f9e41dc-b685-457c-acfa-25f922b7a158/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[617972,617985] [2021-11-23 03:32:32,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:32:32,515 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:32:32,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32 WrapperNode [2021-11-23 03:32:32,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:32:32,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:32:32,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:32:32,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:32:32,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32" (1/1) ... [2021-11-23 03:32:32,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32" (1/1) ... [2021-11-23 03:32:33,039 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29764 [2021-11-23 03:32:33,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:32:33,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:32:33,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:32:33,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:32:33,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32" (1/1) ... [2021-11-23 03:32:33,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32" (1/1) ... [2021-11-23 03:32:33,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32" (1/1) ... [2021-11-23 03:32:33,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32" (1/1) ... [2021-11-23 03:32:33,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32" (1/1) ... [2021-11-23 03:32:33,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32" (1/1) ... [2021-11-23 03:32:33,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32" (1/1) ... [2021-11-23 03:32:33,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:32:33,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:32:33,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:32:33,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:32:33,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32" (1/1) ... [2021-11-23 03:32:33,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:32:33,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:32:33,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:32:33,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e41dc-b685-457c-acfa-25f922b7a158/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:32:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:32:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:32:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:32:33,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:32:34,479 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:32:34,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:32:46,131 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:32:48,050 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:32:48,050 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:32:48,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:48 BoogieIcfgContainer [2021-11-23 03:32:48,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:32:48,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:32:48,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:32:48,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:32:48,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:32:26" (1/3) ... [2021-11-23 03:32:48,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f93012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:32:48, skipping insertion in model container [2021-11-23 03:32:48,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:32" (2/3) ... [2021-11-23 03:32:48,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f93012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:32:48, skipping insertion in model container [2021-11-23 03:32:48,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:48" (3/3) ... [2021-11-23 03:32:48,072 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-23 03:32:48,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:32:48,078 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-23 03:32:48,167 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:32:48,177 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 [2021-11-23 03:32:48,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-23 03:32:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 6224 states, 6204 states have (on average 1.776434558349452) internal successors, (11021), 6223 states have internal predecessors, (11021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:32:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 03:32:48,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:48,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:32:48,364 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:32:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash 556941127, now seen corresponding path program 1 times [2021-11-23 03:32:48,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:48,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637197036] [2021-11-23 03:32:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:48,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:32:49,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:49,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637197036] [2021-11-23 03:32:49,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637197036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:32:49,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:32:49,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:32:49,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103944115] [2021-11-23 03:32:49,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:32:49,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:32:49,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:49,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:32:49,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:32:49,166 INFO L87 Difference]: Start difference. First operand has 6224 states, 6204 states have (on average 1.776434558349452) internal successors, (11021), 6223 states have internal predecessors, (11021), 0 states have call successors, (0), 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 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:32:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:55,068 INFO L93 Difference]: Finished difference Result 9150 states and 15957 transitions. [2021-11-23 03:32:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:32:55,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 03:32:55,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:55,130 INFO L225 Difference]: With dead ends: 9150 [2021-11-23 03:32:55,131 INFO L226 Difference]: Without dead ends: 5803 [2021-11-23 03:32:55,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:32:55,153 INFO L933 BasicCegarLoop]: 4772 mSDtfsCounter, 28483 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 4482 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28483 SdHoareTripleChecker+Valid, 5706 SdHoareTripleChecker+Invalid, 4585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:55,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28483 Valid, 5706 Invalid, 4585 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 4482 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 03:32:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5803 states. [2021-11-23 03:32:55,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5803 to 5770. [2021-11-23 03:32:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5770 states, 5751 states have (on average 1.2809946096331073) internal successors, (7367), 5769 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:32:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 7367 transitions. [2021-11-23 03:32:55,623 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 7367 transitions. Word has length 77 [2021-11-23 03:32:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:32:55,624 INFO L470 AbstractCegarLoop]: Abstraction has 5770 states and 7367 transitions. [2021-11-23 03:32:55,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:32:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 7367 transitions. [2021-11-23 03:32:55,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 03:32:55,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:55,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:32:55,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:32:55,649 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:32:55,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash 129891559, now seen corresponding path program 1 times [2021-11-23 03:32:55,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:55,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509622912] [2021-11-23 03:32:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:55,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:32:55,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:55,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509622912] [2021-11-23 03:32:55,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509622912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:32:55,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:32:55,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:32:55,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113888533] [2021-11-23 03:32:55,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:32:55,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:32:55,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:55,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:32:55,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:32:55,987 INFO L87 Difference]: Start difference. First operand 5770 states and 7367 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:32:59,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:59,997 INFO L93 Difference]: Finished difference Result 9466 states and 12008 transitions. [2021-11-23 03:32:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:32:59,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-23 03:32:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:00,036 INFO L225 Difference]: With dead ends: 9466 [2021-11-23 03:33:00,036 INFO L226 Difference]: Without dead ends: 6014 [2021-11-23 03:33:00,045 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 [2021-11-23 03:33:00,048 INFO L933 BasicCegarLoop]: 2362 mSDtfsCounter, 17032 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17032 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:00,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17032 Valid, 3061 Invalid, 3289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 03:33:00,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2021-11-23 03:33:00,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 5983. [2021-11-23 03:33:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5983 states, 5964 states have (on average 1.2766599597585513) internal successors, (7614), 5982 states have internal predecessors, (7614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5983 states to 5983 states and 7614 transitions. [2021-11-23 03:33:00,384 INFO L78 Accepts]: Start accepts. Automaton has 5983 states and 7614 transitions. Word has length 78 [2021-11-23 03:33:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:00,386 INFO L470 AbstractCegarLoop]: Abstraction has 5983 states and 7614 transitions. [2021-11-23 03:33:00,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5983 states and 7614 transitions. [2021-11-23 03:33:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 03:33:00,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:00,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:00,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:33:00,402 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:33:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1232150739, now seen corresponding path program 1 times [2021-11-23 03:33:00,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:00,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360964409] [2021-11-23 03:33:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:00,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:33:00,586 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:00,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360964409] [2021-11-23 03:33:00,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360964409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:00,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:00,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:33:00,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847917978] [2021-11-23 03:33:00,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:00,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:33:00,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:00,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:33:00,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:33:00,590 INFO L87 Difference]: Start difference. First operand 5983 states and 7614 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:04,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:04,284 INFO L93 Difference]: Finished difference Result 10922 states and 13884 transitions. [2021-11-23 03:33:04,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:33:04,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-23 03:33:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:04,332 INFO L225 Difference]: With dead ends: 10922 [2021-11-23 03:33:04,332 INFO L226 Difference]: Without dead ends: 7480 [2021-11-23 03:33:04,340 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 [2021-11-23 03:33:04,343 INFO L933 BasicCegarLoop]: 2038 mSDtfsCounter, 15048 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15048 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:04,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15048 Valid, 2762 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2824 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 03:33:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2021-11-23 03:33:04,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 7460. [2021-11-23 03:33:04,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7460 states, 7441 states have (on average 1.275097433140707) internal successors, (9488), 7459 states have internal predecessors, (9488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:04,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 9488 transitions. [2021-11-23 03:33:04,796 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 9488 transitions. Word has length 79 [2021-11-23 03:33:04,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:04,797 INFO L470 AbstractCegarLoop]: Abstraction has 7460 states and 9488 transitions. [2021-11-23 03:33:04,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 9488 transitions. [2021-11-23 03:33:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 03:33:04,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:04,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:04,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:33:04,821 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:33:04,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1538274182, now seen corresponding path program 1 times [2021-11-23 03:33:04,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:04,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152616117] [2021-11-23 03:33:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:04,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:33:05,155 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:05,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152616117] [2021-11-23 03:33:05,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152616117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:05,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:05,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:33:05,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688904145] [2021-11-23 03:33:05,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:05,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:33:05,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:05,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:33:05,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:33:05,159 INFO L87 Difference]: Start difference. First operand 7460 states and 9488 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:11,336 INFO L93 Difference]: Finished difference Result 8496 states and 10801 transitions. [2021-11-23 03:33:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:33:11,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-23 03:33:11,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:11,403 INFO L225 Difference]: With dead ends: 8496 [2021-11-23 03:33:11,404 INFO L226 Difference]: Without dead ends: 8490 [2021-11-23 03:33:11,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:33:11,410 INFO L933 BasicCegarLoop]: 2066 mSDtfsCounter, 12851 mSDsluCounter, 7723 mSDsCounter, 0 mSdLazyCounter, 9500 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12851 SdHoareTripleChecker+Valid, 9783 SdHoareTripleChecker+Invalid, 9764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 9500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:11,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12851 Valid, 9783 Invalid, 9764 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [264 Valid, 9500 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 03:33:11,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8490 states. [2021-11-23 03:33:11,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8490 to 7460. [2021-11-23 03:33:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7460 states, 7441 states have (on average 1.2749630426018008) internal successors, (9487), 7459 states have internal predecessors, (9487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 9487 transitions. [2021-11-23 03:33:11,800 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 9487 transitions. Word has length 79 [2021-11-23 03:33:11,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:11,800 INFO L470 AbstractCegarLoop]: Abstraction has 7460 states and 9487 transitions. [2021-11-23 03:33:11,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:11,805 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 9487 transitions. [2021-11-23 03:33:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 03:33:11,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:11,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:11,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:33:11,819 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:33:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1448863563, now seen corresponding path program 1 times [2021-11-23 03:33:11,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:11,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363936978] [2021-11-23 03:33:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:11,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:33:12,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:12,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363936978] [2021-11-23 03:33:12,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363936978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:12,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:12,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:33:12,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334380512] [2021-11-23 03:33:12,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:12,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:33:12,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:33:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:33:12,005 INFO L87 Difference]: Start difference. First operand 7460 states and 9487 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:14,838 INFO L93 Difference]: Finished difference Result 15041 states and 19076 transitions. [2021-11-23 03:33:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:33:14,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-23 03:33:14,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:14,862 INFO L225 Difference]: With dead ends: 15041 [2021-11-23 03:33:14,862 INFO L226 Difference]: Without dead ends: 10250 [2021-11-23 03:33:14,874 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 [2021-11-23 03:33:14,875 INFO L933 BasicCegarLoop]: 1936 mSDtfsCounter, 13834 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13834 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:14,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13834 Valid, 2595 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 03:33:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10250 states. [2021-11-23 03:33:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10250 to 10222. [2021-11-23 03:33:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10222 states, 10203 states have (on average 1.2509065960991865) internal successors, (12763), 10221 states have internal predecessors, (12763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:15,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10222 states to 10222 states and 12763 transitions. [2021-11-23 03:33:15,598 INFO L78 Accepts]: Start accepts. Automaton has 10222 states and 12763 transitions. Word has length 79 [2021-11-23 03:33:15,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:15,600 INFO L470 AbstractCegarLoop]: Abstraction has 10222 states and 12763 transitions. [2021-11-23 03:33:15,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:15,600 INFO L276 IsEmpty]: Start isEmpty. Operand 10222 states and 12763 transitions. [2021-11-23 03:33:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 03:33:15,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:15,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:15,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:33:15,624 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:33:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:15,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1852629809, now seen corresponding path program 1 times [2021-11-23 03:33:15,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:15,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71347296] [2021-11-23 03:33:15,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:15,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:33:16,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:16,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71347296] [2021-11-23 03:33:16,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71347296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:16,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:16,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:33:16,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895182278] [2021-11-23 03:33:16,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:16,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:33:16,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:33:16,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:33:16,225 INFO L87 Difference]: Start difference. First operand 10222 states and 12763 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:22,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:22,355 INFO L93 Difference]: Finished difference Result 25887 states and 33873 transitions. [2021-11-23 03:33:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 03:33:22,355 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-23 03:33:22,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:22,417 INFO L225 Difference]: With dead ends: 25887 [2021-11-23 03:33:22,417 INFO L226 Difference]: Without dead ends: 24652 [2021-11-23 03:33:22,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 03:33:22,426 INFO L933 BasicCegarLoop]: 4765 mSDtfsCounter, 31129 mSDsluCounter, 31600 mSDsCounter, 0 mSdLazyCounter, 4698 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31129 SdHoareTripleChecker+Valid, 35888 SdHoareTripleChecker+Invalid, 5348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 4698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:22,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31129 Valid, 35888 Invalid, 5348 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [650 Valid, 4698 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-23 03:33:22,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24652 states. [2021-11-23 03:33:23,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24652 to 10141. [2021-11-23 03:33:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10141 states, 10123 states have (on average 1.2506174059073398) internal successors, (12660), 10140 states have internal predecessors, (12660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10141 states to 10141 states and 12660 transitions. [2021-11-23 03:33:23,352 INFO L78 Accepts]: Start accepts. Automaton has 10141 states and 12660 transitions. Word has length 80 [2021-11-23 03:33:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:23,353 INFO L470 AbstractCegarLoop]: Abstraction has 10141 states and 12660 transitions. [2021-11-23 03:33:23,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:23,354 INFO L276 IsEmpty]: Start isEmpty. Operand 10141 states and 12660 transitions. [2021-11-23 03:33:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 03:33:23,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:23,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:23,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:33:23,373 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:33:23,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash 345318540, now seen corresponding path program 1 times [2021-11-23 03:33:23,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:23,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272976292] [2021-11-23 03:33:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:23,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:33:23,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:23,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272976292] [2021-11-23 03:33:23,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272976292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:23,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:23,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:33:23,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837306276] [2021-11-23 03:33:23,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:23,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:33:23,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:23,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:33:23,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:33:23,651 INFO L87 Difference]: Start difference. First operand 10141 states and 12660 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:31,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:31,415 INFO L93 Difference]: Finished difference Result 17277 states and 22097 transitions. [2021-11-23 03:33:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 03:33:31,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-23 03:33:31,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:31,455 INFO L225 Difference]: With dead ends: 17277 [2021-11-23 03:33:31,455 INFO L226 Difference]: Without dead ends: 16002 [2021-11-23 03:33:31,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2021-11-23 03:33:31,465 INFO L933 BasicCegarLoop]: 2075 mSDtfsCounter, 14632 mSDsluCounter, 8859 mSDsCounter, 0 mSdLazyCounter, 11746 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14632 SdHoareTripleChecker+Valid, 10922 SdHoareTripleChecker+Invalid, 11883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 11746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:31,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14632 Valid, 10922 Invalid, 11883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [137 Valid, 11746 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 03:33:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16002 states. [2021-11-23 03:33:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16002 to 10148. [2021-11-23 03:33:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10148 states, 10130 states have (on average 1.2504442250740375) internal successors, (12667), 10147 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10148 states to 10148 states and 12667 transitions. [2021-11-23 03:33:32,284 INFO L78 Accepts]: Start accepts. Automaton has 10148 states and 12667 transitions. Word has length 80 [2021-11-23 03:33:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:32,285 INFO L470 AbstractCegarLoop]: Abstraction has 10148 states and 12667 transitions. [2021-11-23 03:33:32,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 10148 states and 12667 transitions. [2021-11-23 03:33:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 03:33:32,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:32,304 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] [2021-11-23 03:33:32,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:33:32,304 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:33:32,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:32,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1931324810, now seen corresponding path program 1 times [2021-11-23 03:33:32,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:32,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765843347] [2021-11-23 03:33:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:32,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:33:32,430 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:32,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765843347] [2021-11-23 03:33:32,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765843347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:32,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:32,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:33:32,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081881387] [2021-11-23 03:33:32,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:32,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:33:32,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:32,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:33:32,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:33:32,433 INFO L87 Difference]: Start difference. First operand 10148 states and 12667 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:35,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:35,687 INFO L93 Difference]: Finished difference Result 22649 states and 28591 transitions. [2021-11-23 03:33:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:33:35,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-23 03:33:35,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:35,712 INFO L225 Difference]: With dead ends: 22649 [2021-11-23 03:33:35,712 INFO L226 Difference]: Without dead ends: 14755 [2021-11-23 03:33:35,728 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 [2021-11-23 03:33:35,729 INFO L933 BasicCegarLoop]: 2075 mSDtfsCounter, 14931 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14931 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 2777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:35,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14931 Valid, 2895 Invalid, 2777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 03:33:35,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14755 states. [2021-11-23 03:33:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14755 to 14731. [2021-11-23 03:33:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14731 states, 14713 states have (on average 1.2520220213416706) internal successors, (18421), 14730 states have internal predecessors, (18421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:36,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14731 states to 14731 states and 18421 transitions. [2021-11-23 03:33:36,924 INFO L78 Accepts]: Start accepts. Automaton has 14731 states and 18421 transitions. Word has length 81 [2021-11-23 03:33:36,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:36,925 INFO L470 AbstractCegarLoop]: Abstraction has 14731 states and 18421 transitions. [2021-11-23 03:33:36,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:36,925 INFO L276 IsEmpty]: Start isEmpty. Operand 14731 states and 18421 transitions. [2021-11-23 03:33:36,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 03:33:36,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:36,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:36,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:33:36,943 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:33:36,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:36,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1417764063, now seen corresponding path program 1 times [2021-11-23 03:33:36,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:36,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364951888] [2021-11-23 03:33:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:36,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:33:37,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:37,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364951888] [2021-11-23 03:33:37,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364951888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:37,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:37,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:33:37,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357972658] [2021-11-23 03:33:37,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:37,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:33:37,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:37,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:33:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:33:37,056 INFO L87 Difference]: Start difference. First operand 14731 states and 18421 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:38,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:38,729 INFO L93 Difference]: Finished difference Result 28945 states and 36330 transitions. [2021-11-23 03:33:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:33:38,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-23 03:33:38,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:38,754 INFO L225 Difference]: With dead ends: 28945 [2021-11-23 03:33:38,754 INFO L226 Difference]: Without dead ends: 17843 [2021-11-23 03:33:38,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:33:38,779 INFO L933 BasicCegarLoop]: 3709 mSDtfsCounter, 3757 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:38,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3757 Valid, 4669 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:33:38,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17843 states. [2021-11-23 03:33:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17843 to 17814. [2021-11-23 03:33:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17814 states, 17796 states have (on average 1.2420206788042256) internal successors, (22103), 17813 states have internal predecessors, (22103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17814 states to 17814 states and 22103 transitions. [2021-11-23 03:33:40,351 INFO L78 Accepts]: Start accepts. Automaton has 17814 states and 22103 transitions. Word has length 81 [2021-11-23 03:33:40,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:40,351 INFO L470 AbstractCegarLoop]: Abstraction has 17814 states and 22103 transitions. [2021-11-23 03:33:40,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:40,351 INFO L276 IsEmpty]: Start isEmpty. Operand 17814 states and 22103 transitions. [2021-11-23 03:33:40,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 03:33:40,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:40,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:40,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:33:40,388 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:33:40,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:40,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1047514158, now seen corresponding path program 1 times [2021-11-23 03:33:40,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:40,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478511603] [2021-11-23 03:33:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:40,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:33:40,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:40,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478511603] [2021-11-23 03:33:40,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478511603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:40,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:40,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:33:40,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882174236] [2021-11-23 03:33:40,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:40,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:33:40,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:40,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:33:40,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:33:40,878 INFO L87 Difference]: Start difference. First operand 17814 states and 22103 transitions. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:50,174 INFO L93 Difference]: Finished difference Result 41590 states and 53949 transitions. [2021-11-23 03:33:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 03:33:50,174 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-23 03:33:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:50,233 INFO L225 Difference]: With dead ends: 41590 [2021-11-23 03:33:50,234 INFO L226 Difference]: Without dead ends: 39839 [2021-11-23 03:33:50,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=301, Invalid=1031, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 03:33:50,243 INFO L933 BasicCegarLoop]: 4142 mSDtfsCounter, 29225 mSDsluCounter, 27101 mSDsCounter, 0 mSdLazyCounter, 4129 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29225 SdHoareTripleChecker+Valid, 30863 SdHoareTripleChecker+Invalid, 4876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:50,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29225 Valid, 30863 Invalid, 4876 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [747 Valid, 4129 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-23 03:33:50,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39839 states. [2021-11-23 03:33:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39839 to 17761. [2021-11-23 03:33:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17761 states, 17744 states have (on average 1.2417718665464383) internal successors, (22034), 17760 states have internal predecessors, (22034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:52,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17761 states to 17761 states and 22034 transitions. [2021-11-23 03:33:52,284 INFO L78 Accepts]: Start accepts. Automaton has 17761 states and 22034 transitions. Word has length 81 [2021-11-23 03:33:52,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:52,285 INFO L470 AbstractCegarLoop]: Abstraction has 17761 states and 22034 transitions. [2021-11-23 03:33:52,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:52,285 INFO L276 IsEmpty]: Start isEmpty. Operand 17761 states and 22034 transitions. [2021-11-23 03:33:52,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 03:33:52,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:52,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:52,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:33:52,305 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:33:52,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:52,306 INFO L85 PathProgramCache]: Analyzing trace with hash 145335399, now seen corresponding path program 1 times [2021-11-23 03:33:52,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:52,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921593833] [2021-11-23 03:33:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:52,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:33:52,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:52,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921593833] [2021-11-23 03:33:52,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921593833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:52,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:52,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:33:52,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817500161] [2021-11-23 03:33:52,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:52,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:33:52,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:52,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:33:52,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:33:52,495 INFO L87 Difference]: Start difference. First operand 17761 states and 22034 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:59,570 INFO L93 Difference]: Finished difference Result 22260 states and 27657 transitions. [2021-11-23 03:33:59,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:33:59,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-23 03:33:59,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:59,598 INFO L225 Difference]: With dead ends: 22260 [2021-11-23 03:33:59,598 INFO L226 Difference]: Without dead ends: 22251 [2021-11-23 03:33:59,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:33:59,605 INFO L933 BasicCegarLoop]: 2007 mSDtfsCounter, 12111 mSDsluCounter, 7679 mSDsCounter, 0 mSdLazyCounter, 9324 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12111 SdHoareTripleChecker+Valid, 9680 SdHoareTripleChecker+Invalid, 9644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 9324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:59,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12111 Valid, 9680 Invalid, 9644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 9324 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 03:33:59,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22251 states. [2021-11-23 03:34:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22251 to 17761. [2021-11-23 03:34:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17761 states, 17744 states have (on average 1.2417155094679893) internal successors, (22033), 17760 states have internal predecessors, (22033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:01,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17761 states to 17761 states and 22033 transitions. [2021-11-23 03:34:01,588 INFO L78 Accepts]: Start accepts. Automaton has 17761 states and 22033 transitions. Word has length 82 [2021-11-23 03:34:01,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:01,589 INFO L470 AbstractCegarLoop]: Abstraction has 17761 states and 22033 transitions. [2021-11-23 03:34:01,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:01,589 INFO L276 IsEmpty]: Start isEmpty. Operand 17761 states and 22033 transitions. [2021-11-23 03:34:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 03:34:01,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:01,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:01,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:34:01,600 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:34:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash 281132209, now seen corresponding path program 1 times [2021-11-23 03:34:01,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:01,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930953948] [2021-11-23 03:34:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:01,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:01,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:01,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930953948] [2021-11-23 03:34:01,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930953948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:01,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:01,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:34:01,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147142566] [2021-11-23 03:34:01,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:01,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:34:01,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:01,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:34:01,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:34:01,853 INFO L87 Difference]: Start difference. First operand 17761 states and 22033 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:10,866 INFO L93 Difference]: Finished difference Result 33515 states and 43071 transitions. [2021-11-23 03:34:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 03:34:10,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-23 03:34:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:10,906 INFO L225 Difference]: With dead ends: 33515 [2021-11-23 03:34:10,906 INFO L226 Difference]: Without dead ends: 30087 [2021-11-23 03:34:10,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-23 03:34:10,917 INFO L933 BasicCegarLoop]: 2204 mSDtfsCounter, 13044 mSDsluCounter, 7883 mSDsCounter, 0 mSdLazyCounter, 9600 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13044 SdHoareTripleChecker+Valid, 10077 SdHoareTripleChecker+Invalid, 9907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 9600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:10,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13044 Valid, 10077 Invalid, 9907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 9600 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 03:34:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30087 states. [2021-11-23 03:34:13,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30087 to 17731. [2021-11-23 03:34:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17731 states, 17714 states have (on average 1.2418426103646834) internal successors, (21998), 17730 states have internal predecessors, (21998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17731 states to 17731 states and 21998 transitions. [2021-11-23 03:34:13,234 INFO L78 Accepts]: Start accepts. Automaton has 17731 states and 21998 transitions. Word has length 82 [2021-11-23 03:34:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:13,235 INFO L470 AbstractCegarLoop]: Abstraction has 17731 states and 21998 transitions. [2021-11-23 03:34:13,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:13,235 INFO L276 IsEmpty]: Start isEmpty. Operand 17731 states and 21998 transitions. [2021-11-23 03:34:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 03:34:13,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:13,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:13,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:34:13,247 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:34:13,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:13,247 INFO L85 PathProgramCache]: Analyzing trace with hash 334995124, now seen corresponding path program 1 times [2021-11-23 03:34:13,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:13,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909780600] [2021-11-23 03:34:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:13,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:13,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:13,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909780600] [2021-11-23 03:34:13,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909780600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:13,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:13,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:34:13,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411409577] [2021-11-23 03:34:13,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:13,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:34:13,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:13,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:34:13,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:34:13,684 INFO L87 Difference]: Start difference. First operand 17731 states and 21998 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:26,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:26,680 INFO L93 Difference]: Finished difference Result 46841 states and 60970 transitions. [2021-11-23 03:34:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 03:34:26,680 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-23 03:34:26,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:26,750 INFO L225 Difference]: With dead ends: 46841 [2021-11-23 03:34:26,750 INFO L226 Difference]: Without dead ends: 46829 [2021-11-23 03:34:26,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=319, Invalid=1241, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 03:34:26,761 INFO L933 BasicCegarLoop]: 4542 mSDtfsCounter, 24528 mSDsluCounter, 27584 mSDsCounter, 0 mSdLazyCounter, 4248 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24528 SdHoareTripleChecker+Valid, 31721 SdHoareTripleChecker+Invalid, 4818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 4248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:26,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24528 Valid, 31721 Invalid, 4818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [570 Valid, 4248 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 03:34:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46829 states. [2021-11-23 03:34:29,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46829 to 17724. [2021-11-23 03:34:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17724 states, 17707 states have (on average 1.2418817416840797) internal successors, (21990), 17723 states have internal predecessors, (21990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17724 states to 17724 states and 21990 transitions. [2021-11-23 03:34:29,203 INFO L78 Accepts]: Start accepts. Automaton has 17724 states and 21990 transitions. Word has length 83 [2021-11-23 03:34:29,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:29,203 INFO L470 AbstractCegarLoop]: Abstraction has 17724 states and 21990 transitions. [2021-11-23 03:34:29,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:29,204 INFO L276 IsEmpty]: Start isEmpty. Operand 17724 states and 21990 transitions. [2021-11-23 03:34:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 03:34:29,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:29,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:29,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:34:29,214 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:34:29,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:29,214 INFO L85 PathProgramCache]: Analyzing trace with hash -116911058, now seen corresponding path program 1 times [2021-11-23 03:34:29,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:29,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794102914] [2021-11-23 03:34:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:29,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:29,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:29,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794102914] [2021-11-23 03:34:29,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794102914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:29,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:29,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:34:29,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772274895] [2021-11-23 03:34:29,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:29,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:34:29,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:29,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:34:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:34:29,759 INFO L87 Difference]: Start difference. First operand 17724 states and 21990 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:38,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:38,374 INFO L93 Difference]: Finished difference Result 31322 states and 40775 transitions. [2021-11-23 03:34:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:34:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-23 03:34:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:38,410 INFO L225 Difference]: With dead ends: 31322 [2021-11-23 03:34:38,410 INFO L226 Difference]: Without dead ends: 27891 [2021-11-23 03:34:38,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2021-11-23 03:34:38,417 INFO L933 BasicCegarLoop]: 3839 mSDtfsCounter, 18633 mSDsluCounter, 20742 mSDsCounter, 0 mSdLazyCounter, 2843 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18633 SdHoareTripleChecker+Valid, 24497 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:38,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18633 Valid, 24497 Invalid, 3019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [176 Valid, 2843 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 03:34:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27891 states. [2021-11-23 03:34:41,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27891 to 17687. [2021-11-23 03:34:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17687 states, 17671 states have (on average 1.242091562446947) internal successors, (21949), 17686 states have internal predecessors, (21949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17687 states to 17687 states and 21949 transitions. [2021-11-23 03:34:41,077 INFO L78 Accepts]: Start accepts. Automaton has 17687 states and 21949 transitions. Word has length 83 [2021-11-23 03:34:41,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:41,078 INFO L470 AbstractCegarLoop]: Abstraction has 17687 states and 21949 transitions. [2021-11-23 03:34:41,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:41,078 INFO L276 IsEmpty]: Start isEmpty. Operand 17687 states and 21949 transitions. [2021-11-23 03:34:41,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 03:34:41,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:41,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:41,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 03:34:41,088 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:34:41,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1102446847, now seen corresponding path program 1 times [2021-11-23 03:34:41,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:41,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972994794] [2021-11-23 03:34:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:41,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:41,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:41,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:41,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972994794] [2021-11-23 03:34:41,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972994794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:41,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:41,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:34:41,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942515500] [2021-11-23 03:34:41,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:41,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:34:41,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:34:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:34:41,295 INFO L87 Difference]: Start difference. First operand 17687 states and 21949 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:50,169 INFO L93 Difference]: Finished difference Result 22984 states and 29222 transitions. [2021-11-23 03:34:50,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:34:50,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-23 03:34:50,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:50,195 INFO L225 Difference]: With dead ends: 22984 [2021-11-23 03:34:50,196 INFO L226 Difference]: Without dead ends: 19290 [2021-11-23 03:34:50,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-11-23 03:34:50,203 INFO L933 BasicCegarLoop]: 1961 mSDtfsCounter, 13788 mSDsluCounter, 8244 mSDsCounter, 0 mSdLazyCounter, 10706 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13788 SdHoareTripleChecker+Valid, 10195 SdHoareTripleChecker+Invalid, 10838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 10706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:50,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13788 Valid, 10195 Invalid, 10838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [132 Valid, 10706 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 03:34:50,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19290 states. [2021-11-23 03:34:52,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19290 to 17393. [2021-11-23 03:34:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17393 states, 17377 states have (on average 1.2427346492490072) internal successors, (21595), 17392 states have internal predecessors, (21595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17393 states to 17393 states and 21595 transitions. [2021-11-23 03:34:52,850 INFO L78 Accepts]: Start accepts. Automaton has 17393 states and 21595 transitions. Word has length 83 [2021-11-23 03:34:52,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:52,850 INFO L470 AbstractCegarLoop]: Abstraction has 17393 states and 21595 transitions. [2021-11-23 03:34:52,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 17393 states and 21595 transitions. [2021-11-23 03:34:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 03:34:52,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:52,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:52,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 03:34:52,863 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:34:52,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:52,863 INFO L85 PathProgramCache]: Analyzing trace with hash -259980893, now seen corresponding path program 1 times [2021-11-23 03:34:52,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:52,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848273373] [2021-11-23 03:34:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:52,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:53,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:53,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848273373] [2021-11-23 03:34:53,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848273373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:53,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:53,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:34:53,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248050322] [2021-11-23 03:34:53,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:53,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:34:53,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:53,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:34:53,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:34:53,072 INFO L87 Difference]: Start difference. First operand 17393 states and 21595 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:05,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:05,073 INFO L93 Difference]: Finished difference Result 31027 states and 39678 transitions. [2021-11-23 03:35:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 03:35:05,073 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-23 03:35:05,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:05,108 INFO L225 Difference]: With dead ends: 31027 [2021-11-23 03:35:05,109 INFO L226 Difference]: Without dead ends: 28567 [2021-11-23 03:35:05,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:35:05,118 INFO L933 BasicCegarLoop]: 2127 mSDtfsCounter, 18019 mSDsluCounter, 7654 mSDsCounter, 0 mSdLazyCounter, 9340 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18019 SdHoareTripleChecker+Valid, 9775 SdHoareTripleChecker+Invalid, 9732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 9340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:05,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18019 Valid, 9775 Invalid, 9732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [392 Valid, 9340 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 03:35:05,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28567 states. [2021-11-23 03:35:08,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28567 to 17393. [2021-11-23 03:35:08,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17393 states, 17377 states have (on average 1.242677101916326) internal successors, (21594), 17392 states have internal predecessors, (21594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17393 states to 17393 states and 21594 transitions. [2021-11-23 03:35:08,101 INFO L78 Accepts]: Start accepts. Automaton has 17393 states and 21594 transitions. Word has length 84 [2021-11-23 03:35:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:08,101 INFO L470 AbstractCegarLoop]: Abstraction has 17393 states and 21594 transitions. [2021-11-23 03:35:08,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 17393 states and 21594 transitions. [2021-11-23 03:35:08,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 03:35:08,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:08,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:08,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 03:35:08,115 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:35:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash -659144821, now seen corresponding path program 1 times [2021-11-23 03:35:08,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:08,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834492234] [2021-11-23 03:35:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:08,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:08,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:08,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834492234] [2021-11-23 03:35:08,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834492234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:08,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:08,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:35:08,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417102511] [2021-11-23 03:35:08,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:08,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:35:08,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:08,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:35:08,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:35:08,283 INFO L87 Difference]: Start difference. First operand 17393 states and 21594 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:18,505 INFO L93 Difference]: Finished difference Result 24185 states and 30345 transitions. [2021-11-23 03:35:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:35:18,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-23 03:35:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:18,532 INFO L225 Difference]: With dead ends: 24185 [2021-11-23 03:35:18,532 INFO L226 Difference]: Without dead ends: 24174 [2021-11-23 03:35:18,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:35:18,537 INFO L933 BasicCegarLoop]: 2151 mSDtfsCounter, 11992 mSDsluCounter, 8136 mSDsCounter, 0 mSdLazyCounter, 10190 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11992 SdHoareTripleChecker+Valid, 10279 SdHoareTripleChecker+Invalid, 10482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 10190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:18,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11992 Valid, 10279 Invalid, 10482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [292 Valid, 10190 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 03:35:18,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24174 states. [2021-11-23 03:35:21,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24174 to 17393. [2021-11-23 03:35:21,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17393 states, 17377 states have (on average 1.2426195545836451) internal successors, (21593), 17392 states have internal predecessors, (21593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17393 states to 17393 states and 21593 transitions. [2021-11-23 03:35:21,650 INFO L78 Accepts]: Start accepts. Automaton has 17393 states and 21593 transitions. Word has length 84 [2021-11-23 03:35:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:21,650 INFO L470 AbstractCegarLoop]: Abstraction has 17393 states and 21593 transitions. [2021-11-23 03:35:21,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:21,651 INFO L276 IsEmpty]: Start isEmpty. Operand 17393 states and 21593 transitions. [2021-11-23 03:35:21,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 03:35:21,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:21,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:21,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 03:35:21,661 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:35:21,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash -171382137, now seen corresponding path program 1 times [2021-11-23 03:35:21,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:21,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490772905] [2021-11-23 03:35:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:21,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:21,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:21,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490772905] [2021-11-23 03:35:21,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490772905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:21,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:21,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:35:21,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579388663] [2021-11-23 03:35:21,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:21,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:35:21,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:21,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:35:21,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:35:21,742 INFO L87 Difference]: Start difference. First operand 17393 states and 21593 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:25,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:25,260 INFO L93 Difference]: Finished difference Result 25276 states and 31896 transitions. [2021-11-23 03:35:25,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:35:25,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-23 03:35:25,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:25,279 INFO L225 Difference]: With dead ends: 25276 [2021-11-23 03:35:25,279 INFO L226 Difference]: Without dead ends: 15382 [2021-11-23 03:35:25,291 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 [2021-11-23 03:35:25,292 INFO L933 BasicCegarLoop]: 2767 mSDtfsCounter, 2735 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:25,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 3533 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:35:25,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15382 states. [2021-11-23 03:35:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15382 to 15368. [2021-11-23 03:35:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15356 states have (on average 1.2578145350351655) internal successors, (19315), 15367 states have internal predecessors, (19315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 19315 transitions. [2021-11-23 03:35:28,599 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 19315 transitions. Word has length 84 [2021-11-23 03:35:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:28,599 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 19315 transitions. [2021-11-23 03:35:28,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 19315 transitions. [2021-11-23 03:35:28,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 03:35:28,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:28,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:28,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 03:35:28,608 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:35:28,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:28,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1017648630, now seen corresponding path program 1 times [2021-11-23 03:35:28,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:28,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671857784] [2021-11-23 03:35:28,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:28,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:28,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:28,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671857784] [2021-11-23 03:35:28,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671857784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:28,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:28,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:35:28,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138768018] [2021-11-23 03:35:28,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:28,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:35:28,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:28,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:35:28,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:35:28,799 INFO L87 Difference]: Start difference. First operand 15368 states and 19315 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:39,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:39,724 INFO L93 Difference]: Finished difference Result 25711 states and 33029 transitions. [2021-11-23 03:35:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:35:39,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-23 03:35:39,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:39,752 INFO L225 Difference]: With dead ends: 25711 [2021-11-23 03:35:39,752 INFO L226 Difference]: Without dead ends: 24033 [2021-11-23 03:35:39,757 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 [2021-11-23 03:35:39,758 INFO L933 BasicCegarLoop]: 1588 mSDtfsCounter, 8943 mSDsluCounter, 6151 mSDsCounter, 0 mSdLazyCounter, 7125 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8943 SdHoareTripleChecker+Valid, 7726 SdHoareTripleChecker+Invalid, 7340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 7125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:39,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8943 Valid, 7726 Invalid, 7340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 7125 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-23 03:35:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24033 states. [2021-11-23 03:35:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24033 to 15368. [2021-11-23 03:35:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15356 states have (on average 1.2577494139098724) internal successors, (19314), 15367 states have internal predecessors, (19314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 19314 transitions. [2021-11-23 03:35:43,244 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 19314 transitions. Word has length 84 [2021-11-23 03:35:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:43,244 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 19314 transitions. [2021-11-23 03:35:43,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 19314 transitions. [2021-11-23 03:35:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 03:35:43,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:43,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:43,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 03:35:43,254 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:35:43,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:43,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1298086344, now seen corresponding path program 1 times [2021-11-23 03:35:43,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:43,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254350501] [2021-11-23 03:35:43,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:43,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:43,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:43,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254350501] [2021-11-23 03:35:43,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254350501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:43,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:43,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:35:43,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505019666] [2021-11-23 03:35:43,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:43,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:35:43,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:43,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:35:43,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:35:43,426 INFO L87 Difference]: Start difference. First operand 15368 states and 19314 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:51,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:51,963 INFO L93 Difference]: Finished difference Result 20805 states and 26712 transitions. [2021-11-23 03:35:51,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:35:51,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-23 03:35:51,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:51,984 INFO L225 Difference]: With dead ends: 20805 [2021-11-23 03:35:51,984 INFO L226 Difference]: Without dead ends: 19709 [2021-11-23 03:35:51,987 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 [2021-11-23 03:35:51,988 INFO L933 BasicCegarLoop]: 1579 mSDtfsCounter, 9079 mSDsluCounter, 5814 mSDsCounter, 0 mSdLazyCounter, 6720 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9079 SdHoareTripleChecker+Valid, 7380 SdHoareTripleChecker+Invalid, 6971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 6720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:51,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9079 Valid, 7380 Invalid, 6971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 6720 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-23 03:35:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19709 states. [2021-11-23 03:35:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19709 to 15368. [2021-11-23 03:35:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15356 states have (on average 1.2576842927845793) internal successors, (19313), 15367 states have internal predecessors, (19313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 19313 transitions. [2021-11-23 03:35:55,273 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 19313 transitions. Word has length 84 [2021-11-23 03:35:55,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:55,273 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 19313 transitions. [2021-11-23 03:35:55,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:55,274 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 19313 transitions. [2021-11-23 03:35:55,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 03:35:55,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:55,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:55,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 03:35:55,281 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:35:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:55,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1021711736, now seen corresponding path program 1 times [2021-11-23 03:35:55,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:55,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198490981] [2021-11-23 03:35:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:55,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:55,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:55,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198490981] [2021-11-23 03:35:55,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198490981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:55,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:55,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:35:55,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241157201] [2021-11-23 03:35:55,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:55,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:35:55,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:55,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:35:55,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:35:55,439 INFO L87 Difference]: Start difference. First operand 15368 states and 19313 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:06,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:06,855 INFO L93 Difference]: Finished difference Result 28658 states and 37039 transitions. [2021-11-23 03:36:06,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:36:06,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-23 03:36:06,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:06,890 INFO L225 Difference]: With dead ends: 28658 [2021-11-23 03:36:06,890 INFO L226 Difference]: Without dead ends: 26017 [2021-11-23 03:36:06,897 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 [2021-11-23 03:36:06,898 INFO L933 BasicCegarLoop]: 1744 mSDtfsCounter, 9063 mSDsluCounter, 6562 mSDsCounter, 0 mSdLazyCounter, 7972 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9063 SdHoareTripleChecker+Valid, 8291 SdHoareTripleChecker+Invalid, 8179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 7972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:06,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9063 Valid, 8291 Invalid, 8179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 7972 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-23 03:36:06,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26017 states. [2021-11-23 03:36:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26017 to 15368. [2021-11-23 03:36:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15356 states have (on average 1.2576191716592864) internal successors, (19312), 15367 states have internal predecessors, (19312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 19312 transitions. [2021-11-23 03:36:10,321 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 19312 transitions. Word has length 84 [2021-11-23 03:36:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:10,322 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 19312 transitions. [2021-11-23 03:36:10,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 19312 transitions. [2021-11-23 03:36:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:36:10,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:10,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:10,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 03:36:10,330 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:36:10,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:10,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1746059872, now seen corresponding path program 1 times [2021-11-23 03:36:10,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:10,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159036534] [2021-11-23 03:36:10,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:10,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:10,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:10,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159036534] [2021-11-23 03:36:10,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159036534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:10,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:10,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:36:10,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775235246] [2021-11-23 03:36:10,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:10,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:36:10,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:10,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:36:10,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:36:10,475 INFO L87 Difference]: Start difference. First operand 15368 states and 19312 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 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) [2021-11-23 03:36:21,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:21,482 INFO L93 Difference]: Finished difference Result 28923 states and 37423 transitions. [2021-11-23 03:36:21,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 03:36:21,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 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 [2021-11-23 03:36:21,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:21,520 INFO L225 Difference]: With dead ends: 28923 [2021-11-23 03:36:21,520 INFO L226 Difference]: Without dead ends: 25562 [2021-11-23 03:36:21,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-23 03:36:21,529 INFO L933 BasicCegarLoop]: 1700 mSDtfsCounter, 10981 mSDsluCounter, 5280 mSDsCounter, 0 mSdLazyCounter, 6743 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10981 SdHoareTripleChecker+Valid, 6973 SdHoareTripleChecker+Invalid, 7004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 6743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:21,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10981 Valid, 6973 Invalid, 7004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 6743 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-23 03:36:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25562 states. [2021-11-23 03:36:24,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25562 to 15368. [2021-11-23 03:36:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15356 states have (on average 1.2575540505339933) internal successors, (19311), 15367 states have internal predecessors, (19311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 19311 transitions. [2021-11-23 03:36:25,012 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 19311 transitions. Word has length 85 [2021-11-23 03:36:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:25,013 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 19311 transitions. [2021-11-23 03:36:25,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 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) [2021-11-23 03:36:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 19311 transitions. [2021-11-23 03:36:25,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:36:25,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:25,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:25,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 03:36:25,021 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:36:25,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:25,021 INFO L85 PathProgramCache]: Analyzing trace with hash 534088540, now seen corresponding path program 1 times [2021-11-23 03:36:25,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:25,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941962297] [2021-11-23 03:36:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:25,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:25,151 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:25,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941962297] [2021-11-23 03:36:25,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941962297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:25,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:25,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:36:25,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641325102] [2021-11-23 03:36:25,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:25,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:36:25,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:25,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:36:25,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:36:25,153 INFO L87 Difference]: Start difference. First operand 15368 states and 19311 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 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) [2021-11-23 03:36:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:32,835 INFO L93 Difference]: Finished difference Result 19999 states and 25631 transitions. [2021-11-23 03:36:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 03:36:32,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 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 [2021-11-23 03:36:32,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:32,856 INFO L225 Difference]: With dead ends: 19999 [2021-11-23 03:36:32,856 INFO L226 Difference]: Without dead ends: 17820 [2021-11-23 03:36:32,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-23 03:36:32,863 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 10491 mSDsluCounter, 4783 mSDsCounter, 0 mSdLazyCounter, 5861 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10491 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 6191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 5861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:32,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10491 Valid, 6340 Invalid, 6191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 5861 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 03:36:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17820 states. [2021-11-23 03:36:36,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17820 to 15367. [2021-11-23 03:36:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 15355 states have (on average 1.2575056984695538) internal successors, (19309), 15366 states have internal predecessors, (19309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 19309 transitions. [2021-11-23 03:36:36,491 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 19309 transitions. Word has length 85 [2021-11-23 03:36:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:36,492 INFO L470 AbstractCegarLoop]: Abstraction has 15367 states and 19309 transitions. [2021-11-23 03:36:36,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 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) [2021-11-23 03:36:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 19309 transitions. [2021-11-23 03:36:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:36:36,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:36,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:36,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 03:36:36,501 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:36:36,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash -609990958, now seen corresponding path program 1 times [2021-11-23 03:36:36,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:36,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043091428] [2021-11-23 03:36:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:36,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:36,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:36,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043091428] [2021-11-23 03:36:36,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043091428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:36,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:36,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:36:36,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929334590] [2021-11-23 03:36:36,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:36,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:36:36,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:36,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:36:36,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:36:36,669 INFO L87 Difference]: Start difference. First operand 15367 states and 19309 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 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) [2021-11-23 03:36:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:45,079 INFO L93 Difference]: Finished difference Result 22270 states and 28749 transitions. [2021-11-23 03:36:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 03:36:45,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 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 [2021-11-23 03:36:45,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:45,100 INFO L225 Difference]: With dead ends: 22270 [2021-11-23 03:36:45,100 INFO L226 Difference]: Without dead ends: 18963 [2021-11-23 03:36:45,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-23 03:36:45,106 INFO L933 BasicCegarLoop]: 1563 mSDtfsCounter, 10492 mSDsluCounter, 4781 mSDsCounter, 0 mSdLazyCounter, 5868 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10492 SdHoareTripleChecker+Valid, 6335 SdHoareTripleChecker+Invalid, 6198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 5868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:45,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10492 Valid, 6335 Invalid, 6198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 5868 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 03:36:45,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18963 states. [2021-11-23 03:36:48,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18963 to 15358. [2021-11-23 03:36:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15358 states, 15346 states have (on average 1.2574612276814805) internal successors, (19297), 15357 states have internal predecessors, (19297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15358 states to 15358 states and 19297 transitions. [2021-11-23 03:36:48,584 INFO L78 Accepts]: Start accepts. Automaton has 15358 states and 19297 transitions. Word has length 85 [2021-11-23 03:36:48,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:48,584 INFO L470 AbstractCegarLoop]: Abstraction has 15358 states and 19297 transitions. [2021-11-23 03:36:48,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 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) [2021-11-23 03:36:48,585 INFO L276 IsEmpty]: Start isEmpty. Operand 15358 states and 19297 transitions. [2021-11-23 03:36:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:36:48,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:48,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:48,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 03:36:48,593 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:36:48,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:48,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1552046566, now seen corresponding path program 1 times [2021-11-23 03:36:48,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:48,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045964683] [2021-11-23 03:36:48,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:48,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:48,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:48,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045964683] [2021-11-23 03:36:48,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045964683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:48,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:48,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:36:48,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584799467] [2021-11-23 03:36:48,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:48,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:36:48,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:36:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:36:48,675 INFO L87 Difference]: Start difference. First operand 15358 states and 19297 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2021-11-23 03:36:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:54,681 INFO L93 Difference]: Finished difference Result 30336 states and 38911 transitions. [2021-11-23 03:36:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:36:54,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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 [2021-11-23 03:36:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:54,708 INFO L225 Difference]: With dead ends: 30336 [2021-11-23 03:36:54,708 INFO L226 Difference]: Without dead ends: 23107 [2021-11-23 03:36:54,716 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 [2021-11-23 03:36:54,717 INFO L933 BasicCegarLoop]: 2970 mSDtfsCounter, 1812 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:54,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1812 Valid, 5243 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:36:54,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23107 states. [2021-11-23 03:37:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23107 to 23091. [2021-11-23 03:37:00,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23091 states, 23079 states have (on average 1.2647428398110836) internal successors, (29189), 23090 states have internal predecessors, (29189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:00,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23091 states to 23091 states and 29189 transitions. [2021-11-23 03:37:00,831 INFO L78 Accepts]: Start accepts. Automaton has 23091 states and 29189 transitions. Word has length 85 [2021-11-23 03:37:00,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:00,831 INFO L470 AbstractCegarLoop]: Abstraction has 23091 states and 29189 transitions. [2021-11-23 03:37:00,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2021-11-23 03:37:00,831 INFO L276 IsEmpty]: Start isEmpty. Operand 23091 states and 29189 transitions. [2021-11-23 03:37:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:37:00,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:00,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:00,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 03:37:00,842 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:37:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:00,842 INFO L85 PathProgramCache]: Analyzing trace with hash 457131040, now seen corresponding path program 1 times [2021-11-23 03:37:00,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:00,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613888261] [2021-11-23 03:37:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:00,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:01,307 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:01,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613888261] [2021-11-23 03:37:01,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613888261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:01,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:01,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 03:37:01,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585929559] [2021-11-23 03:37:01,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:01,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:37:01,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:01,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:37:01,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:37:01,309 INFO L87 Difference]: Start difference. First operand 23091 states and 29189 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 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) [2021-11-23 03:37:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:35,701 INFO L93 Difference]: Finished difference Result 68976 states and 90934 transitions. [2021-11-23 03:37:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 03:37:35,702 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 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 [2021-11-23 03:37:35,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:35,817 INFO L225 Difference]: With dead ends: 68976 [2021-11-23 03:37:35,817 INFO L226 Difference]: Without dead ends: 68962 [2021-11-23 03:37:35,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=311, Invalid=1095, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 03:37:35,831 INFO L933 BasicCegarLoop]: 3440 mSDtfsCounter, 21280 mSDsluCounter, 22363 mSDsCounter, 0 mSdLazyCounter, 3277 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21280 SdHoareTripleChecker+Valid, 25495 SdHoareTripleChecker+Invalid, 3656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 3277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:35,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21280 Valid, 25495 Invalid, 3656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [379 Valid, 3277 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 03:37:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68962 states. [2021-11-23 03:37:43,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68962 to 23077. [2021-11-23 03:37:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23077 states, 23066 states have (on average 1.26484869504899) internal successors, (29175), 23076 states have internal predecessors, (29175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23077 states to 23077 states and 29175 transitions. [2021-11-23 03:37:44,041 INFO L78 Accepts]: Start accepts. Automaton has 23077 states and 29175 transitions. Word has length 85 [2021-11-23 03:37:44,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:44,042 INFO L470 AbstractCegarLoop]: Abstraction has 23077 states and 29175 transitions. [2021-11-23 03:37:44,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 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) [2021-11-23 03:37:44,042 INFO L276 IsEmpty]: Start isEmpty. Operand 23077 states and 29175 transitions. [2021-11-23 03:37:44,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:37:44,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:44,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:44,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 03:37:44,111 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:37:44,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:44,111 INFO L85 PathProgramCache]: Analyzing trace with hash -386055985, now seen corresponding path program 1 times [2021-11-23 03:37:44,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:44,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820853679] [2021-11-23 03:37:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:44,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:44,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:44,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:44,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820853679] [2021-11-23 03:37:44,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820853679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:44,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:44,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:37:44,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842186949] [2021-11-23 03:37:44,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:44,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:37:44,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:44,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:37:44,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:37:44,291 INFO L87 Difference]: Start difference. First operand 23077 states and 29175 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 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) [2021-11-23 03:38:00,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:00,880 INFO L93 Difference]: Finished difference Result 42817 states and 55894 transitions. [2021-11-23 03:38:00,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:38:00,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 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 [2021-11-23 03:38:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:00,921 INFO L225 Difference]: With dead ends: 42817 [2021-11-23 03:38:00,921 INFO L226 Difference]: Without dead ends: 33103 [2021-11-23 03:38:00,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-11-23 03:38:00,932 INFO L933 BasicCegarLoop]: 1502 mSDtfsCounter, 6691 mSDsluCounter, 6146 mSDsCounter, 0 mSdLazyCounter, 7461 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6691 SdHoareTripleChecker+Valid, 7638 SdHoareTripleChecker+Invalid, 7516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 7461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:00,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6691 Valid, 7638 Invalid, 7516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 7461 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-23 03:38:00,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33103 states. [2021-11-23 03:38:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33103 to 23077. [2021-11-23 03:38:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23077 states, 23066 states have (on average 1.2648053411948321) internal successors, (29174), 23076 states have internal predecessors, (29174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:38:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23077 states to 23077 states and 29174 transitions. [2021-11-23 03:38:08,594 INFO L78 Accepts]: Start accepts. Automaton has 23077 states and 29174 transitions. Word has length 85 [2021-11-23 03:38:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:08,594 INFO L470 AbstractCegarLoop]: Abstraction has 23077 states and 29174 transitions. [2021-11-23 03:38:08,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 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) [2021-11-23 03:38:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 23077 states and 29174 transitions. [2021-11-23 03:38:08,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:38:08,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:08,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:08,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 03:38:08,604 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:38:08,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:08,605 INFO L85 PathProgramCache]: Analyzing trace with hash -954958880, now seen corresponding path program 1 times [2021-11-23 03:38:08,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:08,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133607661] [2021-11-23 03:38:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:08,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:08,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:08,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133607661] [2021-11-23 03:38:08,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133607661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:08,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:08,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:38:08,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403902367] [2021-11-23 03:38:08,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:08,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:38:08,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:08,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:38:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:38:08,682 INFO L87 Difference]: Start difference. First operand 23077 states and 29174 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2021-11-23 03:38:19,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:19,995 INFO L93 Difference]: Finished difference Result 37677 states and 49142 transitions. [2021-11-23 03:38:19,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:38:19,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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 [2021-11-23 03:38:19,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:20,030 INFO L225 Difference]: With dead ends: 37677 [2021-11-23 03:38:20,030 INFO L226 Difference]: Without dead ends: 26948 [2021-11-23 03:38:20,043 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 [2021-11-23 03:38:20,044 INFO L933 BasicCegarLoop]: 2837 mSDtfsCounter, 1656 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 3988 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:20,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1656 Valid, 3988 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:38:20,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26948 states. [2021-11-23 03:38:29,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26948 to 22421. [2021-11-23 03:38:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22421 states, 22410 states have (on average 1.2846050870147256) internal successors, (28788), 22420 states have internal predecessors, (28788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:38:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22421 states to 22421 states and 28788 transitions. [2021-11-23 03:38:29,916 INFO L78 Accepts]: Start accepts. Automaton has 22421 states and 28788 transitions. Word has length 85 [2021-11-23 03:38:29,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:29,916 INFO L470 AbstractCegarLoop]: Abstraction has 22421 states and 28788 transitions. [2021-11-23 03:38:29,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2021-11-23 03:38:29,916 INFO L276 IsEmpty]: Start isEmpty. Operand 22421 states and 28788 transitions. [2021-11-23 03:38:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:38:29,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:29,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:29,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 03:38:29,926 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:38:29,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1869392622, now seen corresponding path program 1 times [2021-11-23 03:38:29,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:29,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619902368] [2021-11-23 03:38:29,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:29,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:30,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:30,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619902368] [2021-11-23 03:38:30,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619902368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:30,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:30,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:38:30,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425309309] [2021-11-23 03:38:30,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:30,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:38:30,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:30,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:38:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:38:30,338 INFO L87 Difference]: Start difference. First operand 22421 states and 28788 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 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) [2021-11-23 03:39:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:04,120 INFO L93 Difference]: Finished difference Result 54126 states and 71075 transitions. [2021-11-23 03:39:04,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 03:39:04,120 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 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 [2021-11-23 03:39:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:04,192 INFO L225 Difference]: With dead ends: 54126 [2021-11-23 03:39:04,192 INFO L226 Difference]: Without dead ends: 52166 [2021-11-23 03:39:04,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 03:39:04,203 INFO L933 BasicCegarLoop]: 2996 mSDtfsCounter, 20580 mSDsluCounter, 14083 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20580 SdHoareTripleChecker+Valid, 16862 SdHoareTripleChecker+Invalid, 2993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:04,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20580 Valid, 16862 Invalid, 2993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 03:39:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52166 states. [2021-11-23 03:39:13,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52166 to 22399. [2021-11-23 03:39:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22399 states, 22389 states have (on average 1.2845147170485507) internal successors, (28759), 22398 states have internal predecessors, (28759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22399 states to 22399 states and 28759 transitions. [2021-11-23 03:39:13,589 INFO L78 Accepts]: Start accepts. Automaton has 22399 states and 28759 transitions. Word has length 85 [2021-11-23 03:39:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:13,589 INFO L470 AbstractCegarLoop]: Abstraction has 22399 states and 28759 transitions. [2021-11-23 03:39:13,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 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) [2021-11-23 03:39:13,590 INFO L276 IsEmpty]: Start isEmpty. Operand 22399 states and 28759 transitions. [2021-11-23 03:39:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:39:13,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:13,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:39:13,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 03:39:13,599 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 03:39:13,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash -9657187, now seen corresponding path program 1 times [2021-11-23 03:39:13,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:13,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270222541] [2021-11-23 03:39:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:13,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:39:13,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:13,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270222541] [2021-11-23 03:39:13,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270222541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:13,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:13,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:39:13,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540476456] [2021-11-23 03:39:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:13,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:39:13,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:13,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:39:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:39:13,671 INFO L87 Difference]: Start difference. First operand 22399 states and 28759 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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)