./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH --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 da0a9170cb1355df936e020ec31cd269723d3c83f610103689e93f9c7ac8eb3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:05:49,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:05:49,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:05:49,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:05:49,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:05:49,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:05:49,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:05:49,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:05:49,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:05:49,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:05:49,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:05:49,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:05:49,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:05:49,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:05:49,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:05:49,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:05:49,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:05:49,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:05:49,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:05:49,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:05:49,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:05:49,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:05:49,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:05:49,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:05:49,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:05:49,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:05:49,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:05:49,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:05:49,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:05:49,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:05:49,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:05:49,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:05:49,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:05:49,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:05:49,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:05:49,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:05:49,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:05:49,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:05:49,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:05:49,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:05:49,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:05:49,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:05:49,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:05:49,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:05:49,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:05:49,785 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:05:49,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:05:49,785 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:05:49,785 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:05:49,786 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:05:49,792 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:05:49,792 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:05:49,792 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:05:49,793 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:05:49,793 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:05:49,793 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:05:49,793 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:05:49,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:05:49,794 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:05:49,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:05:49,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:05:49,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:05:49,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:05:49,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:05:49,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:05:49,795 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:05:49,796 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:05:49,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:05:49,796 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:05:49,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:05:49,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:05:49,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:05:49,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:05:49,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:05:49,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:05:49,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:05:49,797 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:05:49,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:05:49,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:05:49,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:05:49,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:05:49,798 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_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da0a9170cb1355df936e020ec31cd269723d3c83f610103689e93f9c7ac8eb3a [2021-11-03 05:05:50,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:05:50,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:05:50,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:05:50,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:05:50,143 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:05:50,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-03 05:05:50,226 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/data/b5d23dd1e/c982a5081efd42ff9c22f1d5db44ee6e/FLAGfd58b53cd [2021-11-03 05:05:50,754 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:05:50,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-03 05:05:50,778 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/data/b5d23dd1e/c982a5081efd42ff9c22f1d5db44ee6e/FLAGfd58b53cd [2021-11-03 05:05:51,025 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/data/b5d23dd1e/c982a5081efd42ff9c22f1d5db44ee6e [2021-11-03 05:05:51,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:05:51,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:05:51,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:05:51,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:05:51,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:05:51,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:05:51" (1/1) ... [2021-11-03 05:05:51,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e4d13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:51, skipping insertion in model container [2021-11-03 05:05:51,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:05:51" (1/1) ... [2021-11-03 05:05:51,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:05:51,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:05:51,474 WARN L228 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_aa4169dc-c215-44e9-9e30-ea29fcda8037/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14146,14159] [2021-11-03 05:05:51,488 WARN L228 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_aa4169dc-c215-44e9-9e30-ea29fcda8037/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14793,14806] [2021-11-03 05:05:51,508 WARN L228 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_aa4169dc-c215-44e9-9e30-ea29fcda8037/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16069,16082] [2021-11-03 05:05:51,521 WARN L228 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_aa4169dc-c215-44e9-9e30-ea29fcda8037/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17045,17058] [2021-11-03 05:05:51,601 WARN L228 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_aa4169dc-c215-44e9-9e30-ea29fcda8037/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25516,25529] [2021-11-03 05:05:51,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:05:51,692 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:05:51,939 WARN L228 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_aa4169dc-c215-44e9-9e30-ea29fcda8037/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14146,14159] [2021-11-03 05:05:51,962 WARN L228 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_aa4169dc-c215-44e9-9e30-ea29fcda8037/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14793,14806] [2021-11-03 05:05:51,996 WARN L228 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_aa4169dc-c215-44e9-9e30-ea29fcda8037/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16069,16082] [2021-11-03 05:05:52,023 WARN L228 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_aa4169dc-c215-44e9-9e30-ea29fcda8037/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17045,17058] [2021-11-03 05:05:52,133 WARN L228 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_aa4169dc-c215-44e9-9e30-ea29fcda8037/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25516,25529] [2021-11-03 05:05:52,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:05:52,195 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:05:52,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52 WrapperNode [2021-11-03 05:05:52,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:05:52,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:05:52,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:05:52,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:05:52,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52" (1/1) ... [2021-11-03 05:05:52,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52" (1/1) ... [2021-11-03 05:05:52,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:05:52,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:05:52,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:05:52,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:05:52,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52" (1/1) ... [2021-11-03 05:05:52,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52" (1/1) ... [2021-11-03 05:05:52,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52" (1/1) ... [2021-11-03 05:05:52,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52" (1/1) ... [2021-11-03 05:05:52,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52" (1/1) ... [2021-11-03 05:05:52,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52" (1/1) ... [2021-11-03 05:05:52,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52" (1/1) ... [2021-11-03 05:05:52,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:05:52,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:05:52,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:05:52,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:05:52,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52" (1/1) ... [2021-11-03 05:05:52,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:05:52,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:05:52,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:05:52,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4169dc-c215-44e9-9e30-ea29fcda8037/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:05:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:05:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:05:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:05:52,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:05:55,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:05:55,037 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:05:55,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:05:55 BoogieIcfgContainer [2021-11-03 05:05:55,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:05:55,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:05:55,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:05:55,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:05:55,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:05:51" (1/3) ... [2021-11-03 05:05:55,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5a7bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:05:55, skipping insertion in model container [2021-11-03 05:05:55,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:05:52" (2/3) ... [2021-11-03 05:05:55,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5a7bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:05:55, skipping insertion in model container [2021-11-03 05:05:55,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:05:55" (3/3) ... [2021-11-03 05:05:55,053 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-03 05:05:55,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:05:55,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 05:05:55,124 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:05:55,133 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 [2021-11-03 05:05:55,133 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 05:05:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 285 states have (on average 1.8) internal successors, (513), 290 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:55,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 05:05:55,185 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:55,186 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:05:55,187 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:05:55,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:55,192 INFO L85 PathProgramCache]: Analyzing trace with hash -870074412, now seen corresponding path program 1 times [2021-11-03 05:05:55,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:05:55,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517893203] [2021-11-03 05:05:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:55,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:05:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:05:55,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:05:55,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517893203] [2021-11-03 05:05:55,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517893203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:05:55,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:05:55,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:05:55,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010199773] [2021-11-03 05:05:55,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:05:55,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:05:55,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:05:55,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:55,921 INFO L87 Difference]: Start difference. First operand has 291 states, 285 states have (on average 1.8) internal successors, (513), 290 states have internal predecessors, (513), 0 states have call successors, (0), 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 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:05:56,115 INFO L93 Difference]: Finished difference Result 768 states and 1347 transitions. [2021-11-03 05:05:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:05:56,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-03 05:05:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:05:56,134 INFO L225 Difference]: With dead ends: 768 [2021-11-03 05:05:56,134 INFO L226 Difference]: Without dead ends: 525 [2021-11-03 05:05:56,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:56,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-03 05:05:56,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 503. [2021-11-03 05:05:56,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 498 states have (on average 1.3052208835341366) internal successors, (650), 502 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 650 transitions. [2021-11-03 05:05:56,221 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 650 transitions. Word has length 116 [2021-11-03 05:05:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:05:56,222 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 650 transitions. [2021-11-03 05:05:56,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:56,222 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 650 transitions. [2021-11-03 05:05:56,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 05:05:56,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:56,227 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:05:56,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:05:56,227 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:05:56,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:56,228 INFO L85 PathProgramCache]: Analyzing trace with hash 375476081, now seen corresponding path program 1 times [2021-11-03 05:05:56,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:05:56,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507210569] [2021-11-03 05:05:56,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:56,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:05:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:05:56,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:05:56,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507210569] [2021-11-03 05:05:56,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507210569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:05:56,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:05:56,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:05:56,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504481854] [2021-11-03 05:05:56,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:05:56,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:05:56,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:05:56,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:56,445 INFO L87 Difference]: Start difference. First operand 503 states and 650 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:05:56,670 INFO L93 Difference]: Finished difference Result 953 states and 1235 transitions. [2021-11-03 05:05:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:05:56,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-03 05:05:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:05:56,674 INFO L225 Difference]: With dead ends: 953 [2021-11-03 05:05:56,675 INFO L226 Difference]: Without dead ends: 503 [2021-11-03 05:05:56,677 INFO L786 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 [2021-11-03 05:05:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-11-03 05:05:56,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2021-11-03 05:05:56,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 498 states have (on average 1.28714859437751) internal successors, (641), 502 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:56,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 641 transitions. [2021-11-03 05:05:56,735 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 641 transitions. Word has length 122 [2021-11-03 05:05:56,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:05:56,735 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 641 transitions. [2021-11-03 05:05:56,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:56,736 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 641 transitions. [2021-11-03 05:05:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 05:05:56,739 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:56,740 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:05:56,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:05:56,740 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:05:56,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:56,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1863839370, now seen corresponding path program 1 times [2021-11-03 05:05:56,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:05:56,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276854462] [2021-11-03 05:05:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:56,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:05:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:05:57,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:05:57,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276854462] [2021-11-03 05:05:57,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276854462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:05:57,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:05:57,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:05:57,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389671664] [2021-11-03 05:05:57,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:05:57,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:05:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:05:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:57,118 INFO L87 Difference]: Start difference. First operand 503 states and 641 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:05:57,252 INFO L93 Difference]: Finished difference Result 983 states and 1244 transitions. [2021-11-03 05:05:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:05:57,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-03 05:05:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:05:57,257 INFO L225 Difference]: With dead ends: 983 [2021-11-03 05:05:57,257 INFO L226 Difference]: Without dead ends: 735 [2021-11-03 05:05:57,258 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:57,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-03 05:05:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 713. [2021-11-03 05:05:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 708 states have (on average 1.2838983050847457) internal successors, (909), 712 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:57,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 909 transitions. [2021-11-03 05:05:57,308 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 909 transitions. Word has length 122 [2021-11-03 05:05:57,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:05:57,308 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 909 transitions. [2021-11-03 05:05:57,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:57,309 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 909 transitions. [2021-11-03 05:05:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 05:05:57,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:57,311 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:05:57,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 05:05:57,312 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:05:57,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:57,312 INFO L85 PathProgramCache]: Analyzing trace with hash -711705625, now seen corresponding path program 1 times [2021-11-03 05:05:57,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:05:57,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142765420] [2021-11-03 05:05:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:57,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:05:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:05:57,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:05:57,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142765420] [2021-11-03 05:05:57,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142765420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:05:57,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:05:57,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:05:57,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511638869] [2021-11-03 05:05:57,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:05:57,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:05:57,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:05:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:57,439 INFO L87 Difference]: Start difference. First operand 713 states and 909 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:57,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:05:57,658 INFO L93 Difference]: Finished difference Result 1391 states and 1780 transitions. [2021-11-03 05:05:57,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:05:57,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-03 05:05:57,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:05:57,664 INFO L225 Difference]: With dead ends: 1391 [2021-11-03 05:05:57,664 INFO L226 Difference]: Without dead ends: 713 [2021-11-03 05:05:57,665 INFO L786 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 [2021-11-03 05:05:57,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-03 05:05:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-11-03 05:05:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 708 states have (on average 1.2669491525423728) internal successors, (897), 712 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 897 transitions. [2021-11-03 05:05:57,733 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 897 transitions. Word has length 122 [2021-11-03 05:05:57,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:05:57,735 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 897 transitions. [2021-11-03 05:05:57,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 897 transitions. [2021-11-03 05:05:57,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 05:05:57,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:57,738 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:05:57,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 05:05:57,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:05:57,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:57,739 INFO L85 PathProgramCache]: Analyzing trace with hash 248325986, now seen corresponding path program 1 times [2021-11-03 05:05:57,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:05:57,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562969037] [2021-11-03 05:05:57,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:57,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:05:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:05:58,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:05:58,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562969037] [2021-11-03 05:05:58,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562969037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:05:58,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:05:58,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:05:58,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389933956] [2021-11-03 05:05:58,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:05:58,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:05:58,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:05:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:58,008 INFO L87 Difference]: Start difference. First operand 713 states and 897 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:05:58,214 INFO L93 Difference]: Finished difference Result 1870 states and 2353 transitions. [2021-11-03 05:05:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:05:58,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-03 05:05:58,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:05:58,222 INFO L225 Difference]: With dead ends: 1870 [2021-11-03 05:05:58,222 INFO L226 Difference]: Without dead ends: 1330 [2021-11-03 05:05:58,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-11-03 05:05:58,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1308. [2021-11-03 05:05:58,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1303 states have (on average 1.261703760552571) internal successors, (1644), 1307 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1644 transitions. [2021-11-03 05:05:58,354 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1644 transitions. Word has length 122 [2021-11-03 05:05:58,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:05:58,355 INFO L470 AbstractCegarLoop]: Abstraction has 1308 states and 1644 transitions. [2021-11-03 05:05:58,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1644 transitions. [2021-11-03 05:05:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:05:58,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:58,359 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:05:58,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 05:05:58,360 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:05:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:58,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1712753952, now seen corresponding path program 1 times [2021-11-03 05:05:58,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:05:58,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232333793] [2021-11-03 05:05:58,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:58,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:05:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:05:58,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:05:58,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232333793] [2021-11-03 05:05:58,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232333793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:05:58,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:05:58,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:05:58,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509864773] [2021-11-03 05:05:58,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:05:58,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:05:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:05:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:58,638 INFO L87 Difference]: Start difference. First operand 1308 states and 1644 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:58,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:05:58,867 INFO L93 Difference]: Finished difference Result 2043 states and 2576 transitions. [2021-11-03 05:05:58,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:05:58,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:05:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:05:58,875 INFO L225 Difference]: With dead ends: 2043 [2021-11-03 05:05:58,876 INFO L226 Difference]: Without dead ends: 1337 [2021-11-03 05:05:58,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-11-03 05:05:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1310. [2021-11-03 05:05:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1305 states have (on average 1.2613026819923372) internal successors, (1646), 1309 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1646 transitions. [2021-11-03 05:05:58,998 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1646 transitions. Word has length 128 [2021-11-03 05:05:58,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:05:58,998 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 1646 transitions. [2021-11-03 05:05:58,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1646 transitions. [2021-11-03 05:05:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 05:05:59,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:59,002 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:05:59,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 05:05:59,003 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:05:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1097180520, now seen corresponding path program 1 times [2021-11-03 05:05:59,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:05:59,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542139568] [2021-11-03 05:05:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:59,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:05:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:05:59,279 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:05:59,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542139568] [2021-11-03 05:05:59,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542139568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:05:59,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:05:59,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:05:59,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257029838] [2021-11-03 05:05:59,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:05:59,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:05:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:05:59,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:59,281 INFO L87 Difference]: Start difference. First operand 1310 states and 1646 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:59,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:05:59,587 INFO L93 Difference]: Finished difference Result 3525 states and 4432 transitions. [2021-11-03 05:05:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:05:59,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-03 05:05:59,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:05:59,602 INFO L225 Difference]: With dead ends: 3525 [2021-11-03 05:05:59,602 INFO L226 Difference]: Without dead ends: 2470 [2021-11-03 05:05:59,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:05:59,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-11-03 05:05:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2448. [2021-11-03 05:05:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2443 states have (on average 1.2525583299222267) internal successors, (3060), 2447 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 3060 transitions. [2021-11-03 05:05:59,836 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 3060 transitions. Word has length 128 [2021-11-03 05:05:59,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:05:59,836 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 3060 transitions. [2021-11-03 05:05:59,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:05:59,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 3060 transitions. [2021-11-03 05:05:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 05:05:59,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:59,842 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:05:59,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 05:05:59,842 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:05:59,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash -761588466, now seen corresponding path program 1 times [2021-11-03 05:05:59,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:05:59,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243298751] [2021-11-03 05:05:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:59,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:06:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:05,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:06:05,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243298751] [2021-11-03 05:06:05,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243298751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:05,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:05,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-03 05:06:05,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770185146] [2021-11-03 05:06:05,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 05:06:05,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:06:05,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 05:06:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 05:06:05,617 INFO L87 Difference]: Start difference. First operand 2448 states and 3060 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:18,262 INFO L93 Difference]: Finished difference Result 5307 states and 7111 transitions. [2021-11-03 05:06:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 05:06:18,262 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-03 05:06:18,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:18,290 INFO L225 Difference]: With dead ends: 5307 [2021-11-03 05:06:18,290 INFO L226 Difference]: Without dead ends: 4714 [2021-11-03 05:06:18,296 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=616, Invalid=3166, Unknown=0, NotChecked=0, Total=3782 [2021-11-03 05:06:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4714 states. [2021-11-03 05:06:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4714 to 2639. [2021-11-03 05:06:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2634 states have (on average 1.2456340167046318) internal successors, (3281), 2638 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3281 transitions. [2021-11-03 05:06:18,693 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3281 transitions. Word has length 134 [2021-11-03 05:06:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:18,693 INFO L470 AbstractCegarLoop]: Abstraction has 2639 states and 3281 transitions. [2021-11-03 05:06:18,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3281 transitions. [2021-11-03 05:06:18,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 05:06:18,698 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:18,698 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:18,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 05:06:18,699 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:06:18,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:18,700 INFO L85 PathProgramCache]: Analyzing trace with hash -850200798, now seen corresponding path program 1 times [2021-11-03 05:06:18,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:06:18,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970154500] [2021-11-03 05:06:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:18,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:06:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:24,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:06:24,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970154500] [2021-11-03 05:06:24,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970154500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:24,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:24,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-03 05:06:24,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056112068] [2021-11-03 05:06:24,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 05:06:24,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:06:24,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 05:06:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 05:06:24,939 INFO L87 Difference]: Start difference. First operand 2639 states and 3281 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:37,128 INFO L93 Difference]: Finished difference Result 5419 states and 7319 transitions. [2021-11-03 05:06:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 05:06:37,128 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-03 05:06:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:37,167 INFO L225 Difference]: With dead ends: 5419 [2021-11-03 05:06:37,167 INFO L226 Difference]: Without dead ends: 5004 [2021-11-03 05:06:37,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=640, Invalid=3020, Unknown=0, NotChecked=0, Total=3660 [2021-11-03 05:06:37,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5004 states. [2021-11-03 05:06:37,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5004 to 2845. [2021-11-03 05:06:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2840 states have (on average 1.2482394366197183) internal successors, (3545), 2844 states have internal predecessors, (3545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:37,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 3545 transitions. [2021-11-03 05:06:37,687 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 3545 transitions. Word has length 134 [2021-11-03 05:06:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:37,687 INFO L470 AbstractCegarLoop]: Abstraction has 2845 states and 3545 transitions. [2021-11-03 05:06:37,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 3545 transitions. [2021-11-03 05:06:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 05:06:37,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:37,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:37,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 05:06:37,693 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:06:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash -480256809, now seen corresponding path program 1 times [2021-11-03 05:06:37,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:06:37,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897811767] [2021-11-03 05:06:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:37,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:06:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:42,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:06:42,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897811767] [2021-11-03 05:06:42,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897811767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:42,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:42,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-03 05:06:42,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910026083] [2021-11-03 05:06:42,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-03 05:06:42,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:06:42,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-03 05:06:42,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 05:06:42,298 INFO L87 Difference]: Start difference. First operand 2845 states and 3545 transitions. Second operand has 34 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:52,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:52,484 INFO L93 Difference]: Finished difference Result 6575 states and 8865 transitions. [2021-11-03 05:06:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-03 05:06:52,485 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-03 05:06:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:52,511 INFO L225 Difference]: With dead ends: 6575 [2021-11-03 05:06:52,511 INFO L226 Difference]: Without dead ends: 5785 [2021-11-03 05:06:52,515 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=841, Invalid=4561, Unknown=0, NotChecked=0, Total=5402 [2021-11-03 05:06:52,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2021-11-03 05:06:53,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 3110. [2021-11-03 05:06:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 3105 states have (on average 1.2586151368760063) internal successors, (3908), 3109 states have internal predecessors, (3908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:53,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 3908 transitions. [2021-11-03 05:06:53,158 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 3908 transitions. Word has length 134 [2021-11-03 05:06:53,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:53,159 INFO L470 AbstractCegarLoop]: Abstraction has 3110 states and 3908 transitions. [2021-11-03 05:06:53,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:53,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 3908 transitions. [2021-11-03 05:06:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 05:06:53,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:53,165 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:53,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 05:06:53,166 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:06:53,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:53,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1728354263, now seen corresponding path program 1 times [2021-11-03 05:06:53,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:06:53,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306389454] [2021-11-03 05:06:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:53,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:06:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:53,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:53,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:06:53,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306389454] [2021-11-03 05:06:53,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306389454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:53,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:53,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 05:06:53,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41132764] [2021-11-03 05:06:53,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:06:53,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:06:53,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:06:53,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:06:53,334 INFO L87 Difference]: Start difference. First operand 3110 states and 3908 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:54,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:54,382 INFO L93 Difference]: Finished difference Result 5521 states and 6946 transitions. [2021-11-03 05:06:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:06:54,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-03 05:06:54,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:54,420 INFO L225 Difference]: With dead ends: 5521 [2021-11-03 05:06:54,420 INFO L226 Difference]: Without dead ends: 3158 [2021-11-03 05:06:54,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:06:54,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2021-11-03 05:06:54,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 2855. [2021-11-03 05:06:54,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2855 states, 2850 states have (on average 1.2235087719298245) internal successors, (3487), 2854 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 3487 transitions. [2021-11-03 05:06:54,832 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 3487 transitions. Word has length 134 [2021-11-03 05:06:54,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:54,832 INFO L470 AbstractCegarLoop]: Abstraction has 2855 states and 3487 transitions. [2021-11-03 05:06:54,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 3487 transitions. [2021-11-03 05:06:54,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 05:06:54,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:54,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:54,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 05:06:54,839 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:06:54,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:54,839 INFO L85 PathProgramCache]: Analyzing trace with hash -482218846, now seen corresponding path program 1 times [2021-11-03 05:06:54,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:06:54,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415653759] [2021-11-03 05:06:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:54,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:06:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:55,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:06:55,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415653759] [2021-11-03 05:06:55,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415653759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:55,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:55,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:06:55,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270823196] [2021-11-03 05:06:55,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:06:55,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:06:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:06:55,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:06:55,018 INFO L87 Difference]: Start difference. First operand 2855 states and 3487 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:55,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:55,576 INFO L93 Difference]: Finished difference Result 4285 states and 5315 transitions. [2021-11-03 05:06:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:06:55,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-03 05:06:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:55,582 INFO L225 Difference]: With dead ends: 4285 [2021-11-03 05:06:55,582 INFO L226 Difference]: Without dead ends: 2487 [2021-11-03 05:06:55,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:06:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2021-11-03 05:06:56,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 2317. [2021-11-03 05:06:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 2312 states have (on average 1.217560553633218) internal successors, (2815), 2316 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:56,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2815 transitions. [2021-11-03 05:06:56,051 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2815 transitions. Word has length 134 [2021-11-03 05:06:56,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:56,051 INFO L470 AbstractCegarLoop]: Abstraction has 2317 states and 2815 transitions. [2021-11-03 05:06:56,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:06:56,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2815 transitions. [2021-11-03 05:06:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 05:06:56,056 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:56,056 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:06:56,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 05:06:56,056 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:06:56,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:56,058 INFO L85 PathProgramCache]: Analyzing trace with hash 2146357198, now seen corresponding path program 1 times [2021-11-03 05:06:56,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:06:56,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573045605] [2021-11-03 05:06:56,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:56,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:06:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:00,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:07:00,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573045605] [2021-11-03 05:07:00,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573045605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:00,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:07:00,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-03 05:07:00,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545523175] [2021-11-03 05:07:00,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-03 05:07:00,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:07:00,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-03 05:07:00,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2021-11-03 05:07:00,335 INFO L87 Difference]: Start difference. First operand 2317 states and 2815 transitions. Second operand has 31 states, 31 states have (on average 4.32258064516129) internal successors, (134), 30 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:15,834 INFO L93 Difference]: Finished difference Result 6716 states and 8932 transitions. [2021-11-03 05:07:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-03 05:07:15,835 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.32258064516129) internal successors, (134), 30 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-03 05:07:15,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:15,843 INFO L225 Difference]: With dead ends: 6716 [2021-11-03 05:07:15,844 INFO L226 Difference]: Without dead ends: 6277 [2021-11-03 05:07:15,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=1228, Invalid=6428, Unknown=0, NotChecked=0, Total=7656 [2021-11-03 05:07:15,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2021-11-03 05:07:16,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 3086. [2021-11-03 05:07:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 3081 states have (on average 1.2288218111002922) internal successors, (3786), 3085 states have internal predecessors, (3786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 3786 transitions. [2021-11-03 05:07:16,496 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 3786 transitions. Word has length 134 [2021-11-03 05:07:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:16,496 INFO L470 AbstractCegarLoop]: Abstraction has 3086 states and 3786 transitions. [2021-11-03 05:07:16,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.32258064516129) internal successors, (134), 30 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 3786 transitions. [2021-11-03 05:07:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 05:07:16,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:16,502 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:07:16,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 05:07:16,502 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:07:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2057744866, now seen corresponding path program 1 times [2021-11-03 05:07:16,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:07:16,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739791784] [2021-11-03 05:07:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:16,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:07:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:20,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:07:20,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739791784] [2021-11-03 05:07:20,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739791784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:20,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:07:20,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-03 05:07:20,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390138542] [2021-11-03 05:07:20,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 05:07:20,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:07:20,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 05:07:20,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 05:07:20,995 INFO L87 Difference]: Start difference. First operand 3086 states and 3786 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:34,240 INFO L93 Difference]: Finished difference Result 6121 states and 8046 transitions. [2021-11-03 05:07:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-03 05:07:34,241 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-03 05:07:34,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:34,252 INFO L225 Difference]: With dead ends: 6121 [2021-11-03 05:07:34,252 INFO L226 Difference]: Without dead ends: 5556 [2021-11-03 05:07:34,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=901, Invalid=5419, Unknown=0, NotChecked=0, Total=6320 [2021-11-03 05:07:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2021-11-03 05:07:34,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 2976. [2021-11-03 05:07:34,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2971 states have (on average 1.2372938404577583) internal successors, (3676), 2975 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 3676 transitions. [2021-11-03 05:07:34,910 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 3676 transitions. Word has length 134 [2021-11-03 05:07:34,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:34,911 INFO L470 AbstractCegarLoop]: Abstraction has 2976 states and 3676 transitions. [2021-11-03 05:07:34,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:34,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 3676 transitions. [2021-11-03 05:07:34,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 05:07:34,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:34,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:07:34,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 05:07:34,916 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:07:34,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1867278441, now seen corresponding path program 1 times [2021-11-03 05:07:34,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:07:34,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239237168] [2021-11-03 05:07:34,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:34,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:07:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:38,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:07:38,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239237168] [2021-11-03 05:07:38,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239237168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:38,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:07:38,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-03 05:07:38,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339987644] [2021-11-03 05:07:38,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-03 05:07:38,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:07:38,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-03 05:07:38,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 05:07:38,453 INFO L87 Difference]: Start difference. First operand 2976 states and 3676 transitions. Second operand has 34 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:50,654 INFO L93 Difference]: Finished difference Result 7717 states and 10359 transitions. [2021-11-03 05:07:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-03 05:07:50,654 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-03 05:07:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:50,669 INFO L225 Difference]: With dead ends: 7717 [2021-11-03 05:07:50,669 INFO L226 Difference]: Without dead ends: 7407 [2021-11-03 05:07:50,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=991, Invalid=5815, Unknown=0, NotChecked=0, Total=6806 [2021-11-03 05:07:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7407 states. [2021-11-03 05:07:51,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7407 to 3140. [2021-11-03 05:07:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 3135 states have (on average 1.2303030303030302) internal successors, (3857), 3139 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:51,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 3857 transitions. [2021-11-03 05:07:51,293 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 3857 transitions. Word has length 134 [2021-11-03 05:07:51,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:51,293 INFO L470 AbstractCegarLoop]: Abstraction has 3140 states and 3857 transitions. [2021-11-03 05:07:51,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:51,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 3857 transitions. [2021-11-03 05:07:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 05:07:51,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:51,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:07:51,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 05:07:51,299 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:07:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash 850498360, now seen corresponding path program 1 times [2021-11-03 05:07:51,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:07:51,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376968783] [2021-11-03 05:07:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:51,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:07:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:51,359 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:07:51,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376968783] [2021-11-03 05:07:51,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376968783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:51,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:07:51,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:07:51,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417167717] [2021-11-03 05:07:51,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:07:51,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:07:51,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:07:51,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:07:51,366 INFO L87 Difference]: Start difference. First operand 3140 states and 3857 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:52,099 INFO L93 Difference]: Finished difference Result 5654 states and 7030 transitions. [2021-11-03 05:07:52,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:07:52,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-03 05:07:52,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:52,105 INFO L225 Difference]: With dead ends: 5654 [2021-11-03 05:07:52,106 INFO L226 Difference]: Without dead ends: 3405 [2021-11-03 05:07:52,109 INFO L786 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 [2021-11-03 05:07:52,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2021-11-03 05:07:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3073. [2021-11-03 05:07:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3073 states, 3068 states have (on average 1.2229465449804433) internal successors, (3752), 3072 states have internal predecessors, (3752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:52,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 3752 transitions. [2021-11-03 05:07:52,643 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 3752 transitions. Word has length 135 [2021-11-03 05:07:52,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:52,644 INFO L470 AbstractCegarLoop]: Abstraction has 3073 states and 3752 transitions. [2021-11-03 05:07:52,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:52,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 3752 transitions. [2021-11-03 05:07:52,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 05:07:52,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:52,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:07:52,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 05:07:52,650 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:07:52,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:52,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1632245841, now seen corresponding path program 1 times [2021-11-03 05:07:52,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:07:52,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177189381] [2021-11-03 05:07:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:52,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:07:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:52,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:07:52,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177189381] [2021-11-03 05:07:52,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177189381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:52,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:07:52,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:07:52,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231701749] [2021-11-03 05:07:52,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:07:52,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:07:52,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:07:52,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:07:52,711 INFO L87 Difference]: Start difference. First operand 3073 states and 3752 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:53,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:53,545 INFO L93 Difference]: Finished difference Result 4442 states and 5415 transitions. [2021-11-03 05:07:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:07:53,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-03 05:07:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:53,551 INFO L225 Difference]: With dead ends: 4442 [2021-11-03 05:07:53,551 INFO L226 Difference]: Without dead ends: 3046 [2021-11-03 05:07:53,554 INFO L786 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 [2021-11-03 05:07:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2021-11-03 05:07:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 3030. [2021-11-03 05:07:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3025 states have (on average 1.217190082644628) internal successors, (3682), 3029 states have internal predecessors, (3682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3682 transitions. [2021-11-03 05:07:54,093 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3682 transitions. Word has length 135 [2021-11-03 05:07:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:54,093 INFO L470 AbstractCegarLoop]: Abstraction has 3030 states and 3682 transitions. [2021-11-03 05:07:54,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3682 transitions. [2021-11-03 05:07:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 05:07:54,097 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:54,097 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:07:54,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 05:07:54,097 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:07:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:54,098 INFO L85 PathProgramCache]: Analyzing trace with hash -898847348, now seen corresponding path program 1 times [2021-11-03 05:07:54,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:07:54,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160178183] [2021-11-03 05:07:54,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:54,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:07:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:54,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:07:54,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160178183] [2021-11-03 05:07:54,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160178183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:54,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:07:54,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:07:54,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503987790] [2021-11-03 05:07:54,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:07:54,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:07:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:07:54,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:07:54,159 INFO L87 Difference]: Start difference. First operand 3030 states and 3682 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:55,023 INFO L93 Difference]: Finished difference Result 4723 states and 5800 transitions. [2021-11-03 05:07:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:07:55,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-03 05:07:55,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:55,032 INFO L225 Difference]: With dead ends: 4723 [2021-11-03 05:07:55,032 INFO L226 Difference]: Without dead ends: 3095 [2021-11-03 05:07:55,034 INFO L786 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 [2021-11-03 05:07:55,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2021-11-03 05:07:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 2859. [2021-11-03 05:07:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2854 states have (on average 1.2203924316748422) internal successors, (3483), 2858 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3483 transitions. [2021-11-03 05:07:55,540 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3483 transitions. Word has length 135 [2021-11-03 05:07:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:55,541 INFO L470 AbstractCegarLoop]: Abstraction has 2859 states and 3483 transitions. [2021-11-03 05:07:55,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3483 transitions. [2021-11-03 05:07:55,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 05:07:55,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:55,543 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:07:55,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 05:07:55,544 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:07:55,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:55,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1102224350, now seen corresponding path program 1 times [2021-11-03 05:07:55,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:07:55,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904541369] [2021-11-03 05:07:55,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:55,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:07:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:55,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:07:55,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904541369] [2021-11-03 05:07:55,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904541369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:55,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:07:55,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:07:55,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819587756] [2021-11-03 05:07:55,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:07:55,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:07:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:07:55,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:07:55,624 INFO L87 Difference]: Start difference. First operand 2859 states and 3483 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:56,299 INFO L93 Difference]: Finished difference Result 4761 states and 5862 transitions. [2021-11-03 05:07:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:07:56,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-03 05:07:56,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:56,302 INFO L225 Difference]: With dead ends: 4761 [2021-11-03 05:07:56,302 INFO L226 Difference]: Without dead ends: 2916 [2021-11-03 05:07:56,305 INFO L786 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 [2021-11-03 05:07:56,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-11-03 05:07:56,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2769. [2021-11-03 05:07:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2769 states, 2764 states have (on average 1.2152677279305355) internal successors, (3359), 2768 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 3359 transitions. [2021-11-03 05:07:56,826 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 3359 transitions. Word has length 135 [2021-11-03 05:07:56,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:56,826 INFO L470 AbstractCegarLoop]: Abstraction has 2769 states and 3359 transitions. [2021-11-03 05:07:56,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:56,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 3359 transitions. [2021-11-03 05:07:56,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 05:07:56,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:56,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:07:56,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 05:07:56,831 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:07:56,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1308712975, now seen corresponding path program 1 times [2021-11-03 05:07:56,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:07:56,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329054389] [2021-11-03 05:07:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:56,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:07:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:56,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:07:56,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329054389] [2021-11-03 05:07:56,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329054389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:56,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:07:56,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:07:56,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438108765] [2021-11-03 05:07:56,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:07:56,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:07:56,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:07:56,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:07:56,893 INFO L87 Difference]: Start difference. First operand 2769 states and 3359 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:57,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:57,426 INFO L93 Difference]: Finished difference Result 4393 states and 5356 transitions. [2021-11-03 05:07:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:07:57,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-03 05:07:57,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:57,430 INFO L225 Difference]: With dead ends: 4393 [2021-11-03 05:07:57,430 INFO L226 Difference]: Without dead ends: 2537 [2021-11-03 05:07:57,432 INFO L786 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 [2021-11-03 05:07:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2021-11-03 05:07:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2513. [2021-11-03 05:07:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2508 states have (on average 1.2033492822966507) internal successors, (3018), 2512 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3018 transitions. [2021-11-03 05:07:57,824 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3018 transitions. Word has length 135 [2021-11-03 05:07:57,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:57,824 INFO L470 AbstractCegarLoop]: Abstraction has 2513 states and 3018 transitions. [2021-11-03 05:07:57,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:57,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3018 transitions. [2021-11-03 05:07:57,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 05:07:57,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:57,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:07:57,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 05:07:57,829 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:07:57,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1898129440, now seen corresponding path program 1 times [2021-11-03 05:07:57,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:07:57,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095476663] [2021-11-03 05:07:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:57,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:07:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:57,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:07:57,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095476663] [2021-11-03 05:07:57,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095476663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:57,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:07:57,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:07:57,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984898880] [2021-11-03 05:07:57,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:07:57,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:07:57,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:07:57,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:07:57,901 INFO L87 Difference]: Start difference. First operand 2513 states and 3018 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:58,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:58,430 INFO L93 Difference]: Finished difference Result 4671 states and 5586 transitions. [2021-11-03 05:07:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:07:58,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-03 05:07:58,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:58,433 INFO L225 Difference]: With dead ends: 4671 [2021-11-03 05:07:58,433 INFO L226 Difference]: Without dead ends: 2537 [2021-11-03 05:07:58,436 INFO L786 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 [2021-11-03 05:07:58,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2021-11-03 05:07:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2202. [2021-11-03 05:07:58,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2197 states have (on average 1.1793354574419663) internal successors, (2591), 2201 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2591 transitions. [2021-11-03 05:07:58,782 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2591 transitions. Word has length 135 [2021-11-03 05:07:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:58,782 INFO L470 AbstractCegarLoop]: Abstraction has 2202 states and 2591 transitions. [2021-11-03 05:07:58,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2591 transitions. [2021-11-03 05:07:58,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 05:07:58,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:58,786 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:07:58,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 05:07:58,787 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:07:58,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1616428940, now seen corresponding path program 1 times [2021-11-03 05:07:58,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:07:58,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062623045] [2021-11-03 05:07:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:58,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:07:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:58,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:07:58,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062623045] [2021-11-03 05:07:58,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062623045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:58,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:07:58,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:07:58,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628048112] [2021-11-03 05:07:58,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:07:58,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:07:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:07:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:07:58,849 INFO L87 Difference]: Start difference. First operand 2202 states and 2591 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:59,310 INFO L93 Difference]: Finished difference Result 3439 states and 4092 transitions. [2021-11-03 05:07:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:07:59,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-03 05:07:59,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:59,314 INFO L225 Difference]: With dead ends: 3439 [2021-11-03 05:07:59,315 INFO L226 Difference]: Without dead ends: 2837 [2021-11-03 05:07:59,316 INFO L786 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 [2021-11-03 05:07:59,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2021-11-03 05:07:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 2815. [2021-11-03 05:07:59,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2810 states have (on average 1.1797153024911031) internal successors, (3315), 2814 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3315 transitions. [2021-11-03 05:07:59,790 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3315 transitions. Word has length 137 [2021-11-03 05:07:59,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:59,791 INFO L470 AbstractCegarLoop]: Abstraction has 2815 states and 3315 transitions. [2021-11-03 05:07:59,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:07:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3315 transitions. [2021-11-03 05:07:59,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 05:07:59,796 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:59,796 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:07:59,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 05:07:59,796 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:07:59,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:59,797 INFO L85 PathProgramCache]: Analyzing trace with hash 568520306, now seen corresponding path program 1 times [2021-11-03 05:07:59,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:07:59,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042371695] [2021-11-03 05:07:59,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:59,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:07:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:07:59,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:07:59,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042371695] [2021-11-03 05:07:59,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042371695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:59,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:07:59,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:07:59,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991776361] [2021-11-03 05:07:59,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:07:59,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:07:59,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:07:59,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:07:59,868 INFO L87 Difference]: Start difference. First operand 2815 states and 3315 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:00,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:00,513 INFO L93 Difference]: Finished difference Result 4374 states and 5174 transitions. [2021-11-03 05:08:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:08:00,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-03 05:08:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:00,517 INFO L225 Difference]: With dead ends: 4374 [2021-11-03 05:08:00,517 INFO L226 Difference]: Without dead ends: 3632 [2021-11-03 05:08:00,519 INFO L786 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 [2021-11-03 05:08:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2021-11-03 05:08:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3610. [2021-11-03 05:08:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3605 states have (on average 1.1755894590846048) internal successors, (4238), 3609 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 4238 transitions. [2021-11-03 05:08:01,038 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 4238 transitions. Word has length 137 [2021-11-03 05:08:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:01,038 INFO L470 AbstractCegarLoop]: Abstraction has 3610 states and 4238 transitions. [2021-11-03 05:08:01,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 4238 transitions. [2021-11-03 05:08:01,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:08:01,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:01,043 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:08:01,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 05:08:01,043 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:08:01,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:01,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1243771764, now seen corresponding path program 1 times [2021-11-03 05:08:01,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:08:01,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258947363] [2021-11-03 05:08:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:01,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:08:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:08:05,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:08:05,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258947363] [2021-11-03 05:08:05,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258947363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:05,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:08:05,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-03 05:08:05,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849792873] [2021-11-03 05:08:05,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 05:08:05,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:08:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 05:08:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 05:08:05,134 INFO L87 Difference]: Start difference. First operand 3610 states and 4238 transitions. Second operand has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:16,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:16,119 INFO L93 Difference]: Finished difference Result 6292 states and 7990 transitions. [2021-11-03 05:08:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 05:08:16,119 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:08:16,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:16,125 INFO L225 Difference]: With dead ends: 6292 [2021-11-03 05:08:16,125 INFO L226 Difference]: Without dead ends: 6123 [2021-11-03 05:08:16,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=602, Invalid=3304, Unknown=0, NotChecked=0, Total=3906 [2021-11-03 05:08:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6123 states. [2021-11-03 05:08:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6123 to 3694. [2021-11-03 05:08:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 3689 states have (on average 1.1802656546489563) internal successors, (4354), 3693 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 4354 transitions. [2021-11-03 05:08:16,719 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 4354 transitions. Word has length 140 [2021-11-03 05:08:16,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:16,720 INFO L470 AbstractCegarLoop]: Abstraction has 3694 states and 4354 transitions. [2021-11-03 05:08:16,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 4354 transitions. [2021-11-03 05:08:16,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:08:16,725 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:16,726 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:08:16,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 05:08:16,726 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:08:16,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:16,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1155159432, now seen corresponding path program 1 times [2021-11-03 05:08:16,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:08:16,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022628399] [2021-11-03 05:08:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:16,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:08:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:08:18,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:08:18,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022628399] [2021-11-03 05:08:18,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022628399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:18,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:08:18,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-03 05:08:18,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24487655] [2021-11-03 05:08:18,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-03 05:08:18,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:08:18,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-03 05:08:18,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:08:18,426 INFO L87 Difference]: Start difference. First operand 3694 states and 4354 transitions. Second operand has 23 states, 23 states have (on average 6.086956521739131) internal successors, (140), 22 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:23,633 INFO L93 Difference]: Finished difference Result 5650 states and 7034 transitions. [2021-11-03 05:08:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-03 05:08:23,634 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.086956521739131) internal successors, (140), 22 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:08:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:23,641 INFO L225 Difference]: With dead ends: 5650 [2021-11-03 05:08:23,641 INFO L226 Difference]: Without dead ends: 5642 [2021-11-03 05:08:23,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=424, Invalid=1646, Unknown=0, NotChecked=0, Total=2070 [2021-11-03 05:08:23,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-11-03 05:08:24,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 3729. [2021-11-03 05:08:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3729 states, 3724 states have (on average 1.1785714285714286) internal successors, (4389), 3728 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 4389 transitions. [2021-11-03 05:08:24,381 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 4389 transitions. Word has length 140 [2021-11-03 05:08:24,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:24,382 INFO L470 AbstractCegarLoop]: Abstraction has 3729 states and 4389 transitions. [2021-11-03 05:08:24,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.086956521739131) internal successors, (140), 22 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:24,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 4389 transitions. [2021-11-03 05:08:24,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:08:24,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:24,386 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:08:24,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 05:08:24,387 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:08:24,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:24,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1525103421, now seen corresponding path program 1 times [2021-11-03 05:08:24,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:08:24,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563631774] [2021-11-03 05:08:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:24,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:08:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:08:29,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:08:29,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563631774] [2021-11-03 05:08:29,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563631774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:29,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:08:29,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-11-03 05:08:29,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101184446] [2021-11-03 05:08:29,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-03 05:08:29,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:08:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-03 05:08:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 05:08:29,119 INFO L87 Difference]: Start difference. First operand 3729 states and 4389 transitions. Second operand has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:43,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:43,052 INFO L93 Difference]: Finished difference Result 4665 states and 5695 transitions. [2021-11-03 05:08:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 05:08:43,053 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:08:43,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:43,056 INFO L225 Difference]: With dead ends: 4665 [2021-11-03 05:08:43,056 INFO L226 Difference]: Without dead ends: 4661 [2021-11-03 05:08:43,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=672, Invalid=3488, Unknown=0, NotChecked=0, Total=4160 [2021-11-03 05:08:43,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2021-11-03 05:08:43,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 3729. [2021-11-03 05:08:43,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3729 states, 3724 states have (on average 1.1783029001074115) internal successors, (4388), 3728 states have internal predecessors, (4388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 4388 transitions. [2021-11-03 05:08:43,697 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 4388 transitions. Word has length 140 [2021-11-03 05:08:43,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:43,697 INFO L470 AbstractCegarLoop]: Abstraction has 3729 states and 4388 transitions. [2021-11-03 05:08:43,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.0) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:08:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 4388 transitions. [2021-11-03 05:08:43,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:08:43,702 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:43,702 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:08:43,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 05:08:43,703 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:08:43,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:43,703 INFO L85 PathProgramCache]: Analyzing trace with hash 901439740, now seen corresponding path program 1 times [2021-11-03 05:08:43,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:08:43,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760072192] [2021-11-03 05:08:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:43,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:08:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:08:47,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:08:47,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760072192] [2021-11-03 05:08:47,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760072192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:47,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:08:47,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-03 05:08:47,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900561534] [2021-11-03 05:08:47,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 05:08:47,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:08:47,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 05:08:47,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 05:08:47,053 INFO L87 Difference]: Start difference. First operand 3729 states and 4388 transitions. Second operand has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:09:02,159 INFO L93 Difference]: Finished difference Result 5772 states and 7179 transitions. [2021-11-03 05:09:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-03 05:09:02,160 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:09:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:09:02,164 INFO L225 Difference]: With dead ends: 5772 [2021-11-03 05:09:02,164 INFO L226 Difference]: Without dead ends: 5491 [2021-11-03 05:09:02,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=1155, Invalid=5817, Unknown=0, NotChecked=0, Total=6972 [2021-11-03 05:09:02,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2021-11-03 05:09:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 4041. [2021-11-03 05:09:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4041 states, 4036 states have (on average 1.192021803766105) internal successors, (4811), 4040 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 4811 transitions. [2021-11-03 05:09:02,928 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 4811 transitions. Word has length 140 [2021-11-03 05:09:02,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:09:02,928 INFO L470 AbstractCegarLoop]: Abstraction has 4041 states and 4811 transitions. [2021-11-03 05:09:02,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:02,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 4811 transitions. [2021-11-03 05:09:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:09:02,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:09:02,931 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:09:02,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 05:09:02,932 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:09:02,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:09:02,932 INFO L85 PathProgramCache]: Analyzing trace with hash 812827408, now seen corresponding path program 1 times [2021-11-03 05:09:02,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:09:02,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104041147] [2021-11-03 05:09:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:02,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:09:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:09:07,626 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:09:07,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104041147] [2021-11-03 05:09:07,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104041147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:09:07,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:09:07,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-11-03 05:09:07,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197791160] [2021-11-03 05:09:07,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-03 05:09:07,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:09:07,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-03 05:09:07,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1234, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 05:09:07,628 INFO L87 Difference]: Start difference. First operand 4041 states and 4811 transitions. Second operand has 37 states, 37 states have (on average 3.7837837837837838) internal successors, (140), 36 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:22,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:09:22,462 INFO L93 Difference]: Finished difference Result 7692 states and 9958 transitions. [2021-11-03 05:09:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-03 05:09:22,462 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.7837837837837838) internal successors, (140), 36 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:09:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:09:22,469 INFO L225 Difference]: With dead ends: 7692 [2021-11-03 05:09:22,469 INFO L226 Difference]: Without dead ends: 7593 [2021-11-03 05:09:22,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=766, Invalid=4204, Unknown=0, NotChecked=0, Total=4970 [2021-11-03 05:09:22,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2021-11-03 05:09:23,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 3876. [2021-11-03 05:09:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3876 states, 3871 states have (on average 1.1774735210539913) internal successors, (4558), 3875 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:23,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 4558 transitions. [2021-11-03 05:09:23,179 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 4558 transitions. Word has length 140 [2021-11-03 05:09:23,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:09:23,179 INFO L470 AbstractCegarLoop]: Abstraction has 3876 states and 4558 transitions. [2021-11-03 05:09:23,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.7837837837837838) internal successors, (140), 36 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:23,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 4558 transitions. [2021-11-03 05:09:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:09:23,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:09:23,184 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:09:23,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 05:09:23,185 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:09:23,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:09:23,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1182771397, now seen corresponding path program 1 times [2021-11-03 05:09:23,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:09:23,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865916129] [2021-11-03 05:09:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:23,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:09:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:09:25,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:09:25,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865916129] [2021-11-03 05:09:25,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865916129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:09:25,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:09:25,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-03 05:09:25,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488201927] [2021-11-03 05:09:25,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-03 05:09:25,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:09:25,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-03 05:09:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:09:25,150 INFO L87 Difference]: Start difference. First operand 3876 states and 4558 transitions. Second operand has 23 states, 23 states have (on average 6.086956521739131) internal successors, (140), 22 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:29,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:09:29,884 INFO L93 Difference]: Finished difference Result 6968 states and 8856 transitions. [2021-11-03 05:09:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-03 05:09:29,884 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.086956521739131) internal successors, (140), 22 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:09:29,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:09:29,890 INFO L225 Difference]: With dead ends: 6968 [2021-11-03 05:09:29,890 INFO L226 Difference]: Without dead ends: 6499 [2021-11-03 05:09:29,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=322, Invalid=1238, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 05:09:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6499 states. [2021-11-03 05:09:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6499 to 3729. [2021-11-03 05:09:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3729 states, 3724 states have (on average 1.1748120300751879) internal successors, (4375), 3728 states have internal predecessors, (4375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 4375 transitions. [2021-11-03 05:09:30,633 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 4375 transitions. Word has length 140 [2021-11-03 05:09:30,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:09:30,633 INFO L470 AbstractCegarLoop]: Abstraction has 3729 states and 4375 transitions. [2021-11-03 05:09:30,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.086956521739131) internal successors, (140), 22 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:30,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 4375 transitions. [2021-11-03 05:09:30,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:09:30,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:09:30,636 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:09:30,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 05:09:30,637 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:09:30,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:09:30,637 INFO L85 PathProgramCache]: Analyzing trace with hash -242026792, now seen corresponding path program 1 times [2021-11-03 05:09:30,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:09:30,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740179720] [2021-11-03 05:09:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:30,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:09:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:09:35,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:09:35,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740179720] [2021-11-03 05:09:35,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740179720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:09:35,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:09:35,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-11-03 05:09:35,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819144310] [2021-11-03 05:09:35,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-03 05:09:35,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:09:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-03 05:09:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 05:09:35,969 INFO L87 Difference]: Start difference. First operand 3729 states and 4375 transitions. Second operand has 36 states, 36 states have (on average 3.888888888888889) internal successors, (140), 35 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:46,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:09:46,620 INFO L93 Difference]: Finished difference Result 4867 states and 5891 transitions. [2021-11-03 05:09:46,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-03 05:09:46,621 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.888888888888889) internal successors, (140), 35 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:09:46,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:09:46,624 INFO L225 Difference]: With dead ends: 4867 [2021-11-03 05:09:46,624 INFO L226 Difference]: Without dead ends: 4560 [2021-11-03 05:09:46,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=685, Invalid=3475, Unknown=0, NotChecked=0, Total=4160 [2021-11-03 05:09:46,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2021-11-03 05:09:47,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 3771. [2021-11-03 05:09:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 3766 states have (on average 1.1725969198088158) internal successors, (4416), 3770 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 4416 transitions. [2021-11-03 05:09:47,351 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 4416 transitions. Word has length 140 [2021-11-03 05:09:47,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:09:47,351 INFO L470 AbstractCegarLoop]: Abstraction has 3771 states and 4416 transitions. [2021-11-03 05:09:47,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.888888888888889) internal successors, (140), 35 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:09:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 4416 transitions. [2021-11-03 05:09:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:09:47,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:09:47,354 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:09:47,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 05:09:47,354 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:09:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:09:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -330639124, now seen corresponding path program 1 times [2021-11-03 05:09:47,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:09:47,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328579768] [2021-11-03 05:09:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:47,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:09:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:09:53,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:09:53,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328579768] [2021-11-03 05:09:53,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328579768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:09:53,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:09:53,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-03 05:09:53,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964373743] [2021-11-03 05:09:53,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 05:09:53,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:09:53,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 05:09:53,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 05:09:53,582 INFO L87 Difference]: Start difference. First operand 3771 states and 4416 transitions. Second operand has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:10:01,441 INFO L93 Difference]: Finished difference Result 6274 states and 7953 transitions. [2021-11-03 05:10:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-03 05:10:01,442 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:10:01,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:10:01,479 INFO L225 Difference]: With dead ends: 6274 [2021-11-03 05:10:01,479 INFO L226 Difference]: Without dead ends: 6270 [2021-11-03 05:10:01,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=524, Invalid=2898, Unknown=0, NotChecked=0, Total=3422 [2021-11-03 05:10:01,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6270 states. [2021-11-03 05:10:02,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6270 to 3771. [2021-11-03 05:10:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 3766 states have (on average 1.172331386086033) internal successors, (4415), 3770 states have internal predecessors, (4415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 4415 transitions. [2021-11-03 05:10:02,209 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 4415 transitions. Word has length 140 [2021-11-03 05:10:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:10:02,210 INFO L470 AbstractCegarLoop]: Abstraction has 3771 states and 4415 transitions. [2021-11-03 05:10:02,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 4415 transitions. [2021-11-03 05:10:02,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:10:02,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:10:02,213 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:10:02,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 05:10:02,213 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:10:02,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:10:02,214 INFO L85 PathProgramCache]: Analyzing trace with hash -729123716, now seen corresponding path program 1 times [2021-11-03 05:10:02,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:10:02,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619467380] [2021-11-03 05:10:02,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:02,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:10:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:05,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:10:05,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619467380] [2021-11-03 05:10:05,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619467380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:10:05,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:10:05,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-03 05:10:05,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80789803] [2021-11-03 05:10:05,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-03 05:10:05,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:10:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-03 05:10:05,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2021-11-03 05:10:05,528 INFO L87 Difference]: Start difference. First operand 3771 states and 4415 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:10:16,326 INFO L93 Difference]: Finished difference Result 7809 states and 10008 transitions. [2021-11-03 05:10:16,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-03 05:10:16,327 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:10:16,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:10:16,333 INFO L225 Difference]: With dead ends: 7809 [2021-11-03 05:10:16,334 INFO L226 Difference]: Without dead ends: 7536 [2021-11-03 05:10:16,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=720, Invalid=3570, Unknown=0, NotChecked=0, Total=4290 [2021-11-03 05:10:16,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7536 states. [2021-11-03 05:10:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7536 to 3914. [2021-11-03 05:10:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3914 states, 3909 states have (on average 1.1724226144794065) internal successors, (4583), 3913 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3914 states to 3914 states and 4583 transitions. [2021-11-03 05:10:17,136 INFO L78 Accepts]: Start accepts. Automaton has 3914 states and 4583 transitions. Word has length 140 [2021-11-03 05:10:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:10:17,137 INFO L470 AbstractCegarLoop]: Abstraction has 3914 states and 4583 transitions. [2021-11-03 05:10:17,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:17,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3914 states and 4583 transitions. [2021-11-03 05:10:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:10:17,140 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:10:17,140 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:10:17,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 05:10:17,140 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:10:17,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:10:17,141 INFO L85 PathProgramCache]: Analyzing trace with hash -817736048, now seen corresponding path program 1 times [2021-11-03 05:10:17,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:10:17,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680823463] [2021-11-03 05:10:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:17,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:10:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:21,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:10:21,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680823463] [2021-11-03 05:10:21,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680823463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:10:21,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:10:21,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-03 05:10:21,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143765609] [2021-11-03 05:10:21,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-03 05:10:21,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:10:21,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-03 05:10:21,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2021-11-03 05:10:21,136 INFO L87 Difference]: Start difference. First operand 3914 states and 4583 transitions. Second operand has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:10:29,277 INFO L93 Difference]: Finished difference Result 6603 states and 8369 transitions. [2021-11-03 05:10:29,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 05:10:29,277 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:10:29,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:10:29,283 INFO L225 Difference]: With dead ends: 6603 [2021-11-03 05:10:29,283 INFO L226 Difference]: Without dead ends: 6450 [2021-11-03 05:10:29,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=593, Invalid=2829, Unknown=0, NotChecked=0, Total=3422 [2021-11-03 05:10:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6450 states. [2021-11-03 05:10:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6450 to 3816. [2021-11-03 05:10:30,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3811 states have (on average 1.1734452899501444) internal successors, (4472), 3815 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 4472 transitions. [2021-11-03 05:10:30,063 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 4472 transitions. Word has length 140 [2021-11-03 05:10:30,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:10:30,064 INFO L470 AbstractCegarLoop]: Abstraction has 3816 states and 4472 transitions. [2021-11-03 05:10:30,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 4472 transitions. [2021-11-03 05:10:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:10:30,067 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:10:30,067 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:10:30,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 05:10:30,068 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:10:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:10:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash -447792059, now seen corresponding path program 1 times [2021-11-03 05:10:30,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:10:30,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347731020] [2021-11-03 05:10:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:30,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:10:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:34,149 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:10:34,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347731020] [2021-11-03 05:10:34,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347731020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:10:34,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:10:34,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-03 05:10:34,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200905066] [2021-11-03 05:10:34,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-03 05:10:34,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:10:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-03 05:10:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:10:34,152 INFO L87 Difference]: Start difference. First operand 3816 states and 4472 transitions. Second operand has 32 states, 32 states have (on average 4.375) internal successors, (140), 31 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:45,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:10:45,951 INFO L93 Difference]: Finished difference Result 6516 states and 8259 transitions. [2021-11-03 05:10:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-03 05:10:45,952 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.375) internal successors, (140), 31 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:10:45,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:10:45,957 INFO L225 Difference]: With dead ends: 6516 [2021-11-03 05:10:45,957 INFO L226 Difference]: Without dead ends: 6465 [2021-11-03 05:10:45,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1342 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=857, Invalid=4843, Unknown=0, NotChecked=0, Total=5700 [2021-11-03 05:10:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6465 states. [2021-11-03 05:10:46,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6465 to 3703. [2021-11-03 05:10:46,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3703 states, 3698 states have (on average 1.168469442942131) internal successors, (4321), 3702 states have internal predecessors, (4321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:46,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3703 states to 3703 states and 4321 transitions. [2021-11-03 05:10:46,780 INFO L78 Accepts]: Start accepts. Automaton has 3703 states and 4321 transitions. Word has length 140 [2021-11-03 05:10:46,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:10:46,780 INFO L470 AbstractCegarLoop]: Abstraction has 3703 states and 4321 transitions. [2021-11-03 05:10:46,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.375) internal successors, (140), 31 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:46,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3703 states and 4321 transitions. [2021-11-03 05:10:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:10:46,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:10:46,783 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:10:46,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 05:10:46,784 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:10:46,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:10:46,784 INFO L85 PathProgramCache]: Analyzing trace with hash -537492328, now seen corresponding path program 1 times [2021-11-03 05:10:46,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:10:46,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513972141] [2021-11-03 05:10:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:46,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:10:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:48,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:10:48,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513972141] [2021-11-03 05:10:48,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513972141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:10:48,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:10:48,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-03 05:10:48,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612704238] [2021-11-03 05:10:48,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 05:10:48,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:10:48,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 05:10:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:10:48,274 INFO L87 Difference]: Start difference. First operand 3703 states and 4321 transitions. Second operand has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 21 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:53,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:10:53,241 INFO L93 Difference]: Finished difference Result 6790 states and 8572 transitions. [2021-11-03 05:10:53,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 05:10:53,241 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 21 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:10:53,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:10:53,247 INFO L225 Difference]: With dead ends: 6790 [2021-11-03 05:10:53,247 INFO L226 Difference]: Without dead ends: 6589 [2021-11-03 05:10:53,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=339, Invalid=1383, Unknown=0, NotChecked=0, Total=1722 [2021-11-03 05:10:53,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2021-11-03 05:10:54,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 3844. [2021-11-03 05:10:54,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3839 states have (on average 1.167491534253712) internal successors, (4482), 3843 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 4482 transitions. [2021-11-03 05:10:54,129 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 4482 transitions. Word has length 140 [2021-11-03 05:10:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:10:54,129 INFO L470 AbstractCegarLoop]: Abstraction has 3844 states and 4482 transitions. [2021-11-03 05:10:54,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 21 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 4482 transitions. [2021-11-03 05:10:54,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:10:54,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:10:54,132 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:10:54,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 05:10:54,133 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:10:54,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:10:54,133 INFO L85 PathProgramCache]: Analyzing trace with hash -626104660, now seen corresponding path program 1 times [2021-11-03 05:10:54,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:10:54,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062210692] [2021-11-03 05:10:54,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:54,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:10:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:57,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:10:57,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062210692] [2021-11-03 05:10:57,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062210692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:10:57,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:10:57,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-03 05:10:57,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62121575] [2021-11-03 05:10:57,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-03 05:10:57,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:10:57,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-03 05:10:57,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 05:10:57,343 INFO L87 Difference]: Start difference. First operand 3844 states and 4482 transitions. Second operand has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:06,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:11:06,821 INFO L93 Difference]: Finished difference Result 6517 states and 8192 transitions. [2021-11-03 05:11:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 05:11:06,821 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-03 05:11:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:11:06,827 INFO L225 Difference]: With dead ends: 6517 [2021-11-03 05:11:06,827 INFO L226 Difference]: Without dead ends: 6221 [2021-11-03 05:11:06,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=568, Invalid=2972, Unknown=0, NotChecked=0, Total=3540 [2021-11-03 05:11:06,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2021-11-03 05:11:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 3848. [2021-11-03 05:11:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3843 states have (on average 1.1667967733541504) internal successors, (4484), 3847 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 4484 transitions. [2021-11-03 05:11:07,716 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 4484 transitions. Word has length 140 [2021-11-03 05:11:07,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:11:07,717 INFO L470 AbstractCegarLoop]: Abstraction has 3848 states and 4484 transitions. [2021-11-03 05:11:07,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:07,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 4484 transitions. [2021-11-03 05:11:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:11:07,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:07,722 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:11:07,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 05:11:07,722 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:11:07,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:07,723 INFO L85 PathProgramCache]: Analyzing trace with hash -256160671, now seen corresponding path program 1 times [2021-11-03 05:11:07,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:11:07,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937488593] [2021-11-03 05:11:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:07,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:11:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:02,205 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification. DAG size of input: 11 DAG size of output: 1 [2021-11-03 05:18:33,288 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification. DAG size of input: 13 DAG size of output: 1