./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a17c5e6b377f57a67eda09046c4807c6b84e7806fd109e4ef14e9498a7cb447 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:50:40,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:50:40,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:50:40,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:50:40,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:50:40,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:50:40,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:50:40,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:50:40,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:50:40,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:50:40,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:50:40,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:50:40,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:50:40,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:50:40,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:50:40,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:50:40,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:50:40,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:50:40,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:50:40,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:50:40,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:50:40,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:50:40,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:50:40,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:50:40,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:50:40,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:50:40,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:50:40,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:50:40,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:50:40,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:50:40,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:50:40,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:50:40,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:50:40,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:50:40,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:50:40,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:50:40,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:50:40,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:50:40,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:50:40,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:50:40,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:50:40,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:50:40,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:50:40,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:50:40,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:50:40,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:50:40,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:50:40,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:50:40,773 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:50:40,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:50:40,774 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:50:40,774 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:50:40,775 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:50:40,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:50:40,776 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:50:40,776 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:50:40,776 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:50:40,777 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:50:40,777 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:50:40,777 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:50:40,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:50:40,779 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:50:40,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:50:40,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:50:40,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:50:40,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:50:40,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:50:40,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:50:40,782 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:50:40,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:50:40,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:50:40,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:50:40,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:50:40,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:50:40,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:50:40,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:50:40,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:50:40,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:50:40,785 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:50:40,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:50:40,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:50:40,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:50:40,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:50:40,786 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_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a17c5e6b377f57a67eda09046c4807c6b84e7806fd109e4ef14e9498a7cb447 [2021-11-25 17:50:41,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:50:41,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:50:41,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:50:41,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:50:41,146 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:50:41,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 17:50:41,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/data/c29f717e8/c658fad60a9545be92c1279590371da2/FLAG39bdf81b1 [2021-11-25 17:50:41,996 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:50:42,000 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 17:50:42,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/data/c29f717e8/c658fad60a9545be92c1279590371da2/FLAG39bdf81b1 [2021-11-25 17:50:42,239 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/data/c29f717e8/c658fad60a9545be92c1279590371da2 [2021-11-25 17:50:42,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:50:42,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:50:42,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:50:42,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:50:42,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:50:42,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:50:42" (1/1) ... [2021-11-25 17:50:42,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1103218e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:42, skipping insertion in model container [2021-11-25 17:50:42,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:50:42" (1/1) ... [2021-11-25 17:50:42,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:50:42,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:50:42,721 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16906,16919] [2021-11-25 17:50:42,778 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23310,23323] [2021-11-25 17:50:42,806 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26497,26510] [2021-11-25 17:50:42,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29453,29466] [2021-11-25 17:50:42,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33216,33229] [2021-11-25 17:50:42,848 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36248,36261] [2021-11-25 17:50:42,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39433,39446] [2021-11-25 17:50:42,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42384,42397] [2021-11-25 17:50:42,906 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45768,45781] [2021-11-25 17:50:42,918 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48734,48747] [2021-11-25 17:50:42,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[51883,51896] [2021-11-25 17:50:42,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:50:42,981 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:50:43,108 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16906,16919] [2021-11-25 17:50:43,128 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23310,23323] [2021-11-25 17:50:43,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26497,26510] [2021-11-25 17:50:43,148 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29453,29466] [2021-11-25 17:50:43,160 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33216,33229] [2021-11-25 17:50:43,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36248,36261] [2021-11-25 17:50:43,198 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39433,39446] [2021-11-25 17:50:43,227 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42384,42397] [2021-11-25 17:50:43,236 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45768,45781] [2021-11-25 17:50:43,245 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48734,48747] [2021-11-25 17:50:43,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[51883,51896] [2021-11-25 17:50:43,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:50:43,307 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:50:43,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43 WrapperNode [2021-11-25 17:50:43,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:50:43,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:50:43,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:50:43,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:50:43,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43" (1/1) ... [2021-11-25 17:50:43,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43" (1/1) ... [2021-11-25 17:50:43,455 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2571 [2021-11-25 17:50:43,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:50:43,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:50:43,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:50:43,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:50:43,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43" (1/1) ... [2021-11-25 17:50:43,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43" (1/1) ... [2021-11-25 17:50:43,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43" (1/1) ... [2021-11-25 17:50:43,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43" (1/1) ... [2021-11-25 17:50:43,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43" (1/1) ... [2021-11-25 17:50:43,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43" (1/1) ... [2021-11-25 17:50:43,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43" (1/1) ... [2021-11-25 17:50:43,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:50:43,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:50:43,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:50:43,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:50:43,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43" (1/1) ... [2021-11-25 17:50:43,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:50:43,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:43,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:50:43,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:50:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:50:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:50:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:50:43,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:50:43,927 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:50:43,929 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:50:45,495 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:50:45,647 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:50:45,648 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 17:50:45,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:45 BoogieIcfgContainer [2021-11-25 17:50:45,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:50:45,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:50:45,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:50:45,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:50:45,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:50:42" (1/3) ... [2021-11-25 17:50:45,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780caff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:50:45, skipping insertion in model container [2021-11-25 17:50:45,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:43" (2/3) ... [2021-11-25 17:50:45,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780caff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:50:45, skipping insertion in model container [2021-11-25 17:50:45,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:45" (3/3) ... [2021-11-25 17:50:45,661 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 17:50:45,667 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:50:45,667 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-25 17:50:45,724 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:50:45,731 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 17:50:45,732 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-25 17:50:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 516 states, 504 states have (on average 1.8353174603174602) internal successors, (925), 515 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:45,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 17:50:45,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:45,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:45,791 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:45,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:45,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1216794109, now seen corresponding path program 1 times [2021-11-25 17:50:45,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:45,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116846530] [2021-11-25 17:50:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:45,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:46,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:46,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116846530] [2021-11-25 17:50:46,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116846530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:46,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:46,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:50:46,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968513517] [2021-11-25 17:50:46,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:46,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:50:46,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:50:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:50:46,308 INFO L87 Difference]: Start difference. First operand has 516 states, 504 states have (on average 1.8353174603174602) internal successors, (925), 515 states have internal predecessors, (925), 0 states have call successors, (0), 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 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:46,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:46,970 INFO L93 Difference]: Finished difference Result 697 states and 1215 transitions. [2021-11-25 17:50:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:50:46,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-25 17:50:46,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:46,995 INFO L225 Difference]: With dead ends: 697 [2021-11-25 17:50:46,995 INFO L226 Difference]: Without dead ends: 450 [2021-11-25 17:50:47,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:50:47,010 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 2211 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:47,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2211 Valid, 481 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:47,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-25 17:50:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-25 17:50:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 439 states have (on average 1.275626423690205) internal successors, (560), 449 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 560 transitions. [2021-11-25 17:50:47,094 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 560 transitions. Word has length 58 [2021-11-25 17:50:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:47,095 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 560 transitions. [2021-11-25 17:50:47,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:47,096 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 560 transitions. [2021-11-25 17:50:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 17:50:47,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:47,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:47,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:50:47,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:47,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1191017074, now seen corresponding path program 1 times [2021-11-25 17:50:47,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:47,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21111359] [2021-11-25 17:50:47,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:47,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:47,261 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:47,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21111359] [2021-11-25 17:50:47,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21111359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:47,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:47,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:50:47,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138837614] [2021-11-25 17:50:47,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:47,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:50:47,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:47,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:50:47,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:50:47,270 INFO L87 Difference]: Start difference. First operand 450 states and 560 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:47,532 INFO L93 Difference]: Finished difference Result 529 states and 648 transitions. [2021-11-25 17:50:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:50:47,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-25 17:50:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:47,535 INFO L225 Difference]: With dead ends: 529 [2021-11-25 17:50:47,535 INFO L226 Difference]: Without dead ends: 310 [2021-11-25 17:50:47,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:50:47,541 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1069 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:47,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 212 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:50:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-25 17:50:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2021-11-25 17:50:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 299 states have (on average 1.2675585284280937) internal successors, (379), 309 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 379 transitions. [2021-11-25 17:50:47,581 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 379 transitions. Word has length 58 [2021-11-25 17:50:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:47,582 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 379 transitions. [2021-11-25 17:50:47,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 379 transitions. [2021-11-25 17:50:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 17:50:47,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:47,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:47,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:50:47,587 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:47,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash 53020530, now seen corresponding path program 1 times [2021-11-25 17:50:47,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:47,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408052975] [2021-11-25 17:50:47,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:47,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:47,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:47,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408052975] [2021-11-25 17:50:47,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408052975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:47,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:47,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:50:47,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229376697] [2021-11-25 17:50:47,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:47,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:50:47,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:47,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:50:47,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:50:47,738 INFO L87 Difference]: Start difference. First operand 310 states and 379 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:47,932 INFO L93 Difference]: Finished difference Result 425 states and 522 transitions. [2021-11-25 17:50:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:50:47,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-25 17:50:47,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:47,935 INFO L225 Difference]: With dead ends: 425 [2021-11-25 17:50:47,935 INFO L226 Difference]: Without dead ends: 263 [2021-11-25 17:50:47,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:50:47,939 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 928 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:47,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 179 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:50:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-25 17:50:47,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2021-11-25 17:50:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 252 states have (on average 1.2817460317460319) internal successors, (323), 262 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 323 transitions. [2021-11-25 17:50:47,957 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 323 transitions. Word has length 58 [2021-11-25 17:50:47,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:47,958 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 323 transitions. [2021-11-25 17:50:47,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:47,959 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 323 transitions. [2021-11-25 17:50:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 17:50:47,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:47,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:47,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:50:47,962 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:47,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:47,962 INFO L85 PathProgramCache]: Analyzing trace with hash 84136005, now seen corresponding path program 1 times [2021-11-25 17:50:47,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:47,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127136054] [2021-11-25 17:50:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:47,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:48,065 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:48,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127136054] [2021-11-25 17:50:48,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127136054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:48,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:48,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:50:48,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400377162] [2021-11-25 17:50:48,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:48,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:50:48,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:48,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:50:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:50:48,075 INFO L87 Difference]: Start difference. First operand 263 states and 323 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:48,241 INFO L93 Difference]: Finished difference Result 362 states and 441 transitions. [2021-11-25 17:50:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:50:48,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-25 17:50:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:48,244 INFO L225 Difference]: With dead ends: 362 [2021-11-25 17:50:48,244 INFO L226 Difference]: Without dead ends: 225 [2021-11-25 17:50:48,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:50:48,247 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 770 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:48,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 168 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:50:48,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-25 17:50:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-11-25 17:50:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.280373831775701) internal successors, (274), 224 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 274 transitions. [2021-11-25 17:50:48,263 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 274 transitions. Word has length 59 [2021-11-25 17:50:48,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:48,264 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 274 transitions. [2021-11-25 17:50:48,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 274 transitions. [2021-11-25 17:50:48,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 17:50:48,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:48,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:48,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 17:50:48,267 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:48,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1322654244, now seen corresponding path program 1 times [2021-11-25 17:50:48,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:48,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812551903] [2021-11-25 17:50:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:48,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:48,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:48,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812551903] [2021-11-25 17:50:48,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812551903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:48,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:48,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:50:48,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900173873] [2021-11-25 17:50:48,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:48,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:50:48,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:48,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:50:48,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:50:48,447 INFO L87 Difference]: Start difference. First operand 225 states and 274 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:49,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:49,109 INFO L93 Difference]: Finished difference Result 457 states and 567 transitions. [2021-11-25 17:50:49,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:50:49,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-25 17:50:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:49,112 INFO L225 Difference]: With dead ends: 457 [2021-11-25 17:50:49,112 INFO L226 Difference]: Without dead ends: 410 [2021-11-25 17:50:49,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:50:49,113 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 1173 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:49,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 751 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:49,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-25 17:50:49,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 225. [2021-11-25 17:50:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2757009345794392) internal successors, (273), 224 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 273 transitions. [2021-11-25 17:50:49,131 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 273 transitions. Word has length 60 [2021-11-25 17:50:49,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:49,132 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 273 transitions. [2021-11-25 17:50:49,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 273 transitions. [2021-11-25 17:50:49,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 17:50:49,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:49,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:49,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 17:50:49,133 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:49,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:49,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1579426260, now seen corresponding path program 1 times [2021-11-25 17:50:49,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:49,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57950588] [2021-11-25 17:50:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:49,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:49,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:49,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57950588] [2021-11-25 17:50:49,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57950588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:49,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:49,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:50:49,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320650452] [2021-11-25 17:50:49,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:49,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:50:49,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:49,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:50:49,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:50:49,251 INFO L87 Difference]: Start difference. First operand 225 states and 273 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:49,863 INFO L93 Difference]: Finished difference Result 483 states and 599 transitions. [2021-11-25 17:50:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:50:49,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-25 17:50:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:49,866 INFO L225 Difference]: With dead ends: 483 [2021-11-25 17:50:49,866 INFO L226 Difference]: Without dead ends: 414 [2021-11-25 17:50:49,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:50:49,868 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 834 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:49,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 748 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:50:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-25 17:50:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 225. [2021-11-25 17:50:49,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2710280373831775) internal successors, (272), 224 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 272 transitions. [2021-11-25 17:50:49,888 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 272 transitions. Word has length 60 [2021-11-25 17:50:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:49,889 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 272 transitions. [2021-11-25 17:50:49,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:49,889 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 272 transitions. [2021-11-25 17:50:49,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 17:50:49,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:49,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:49,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 17:50:49,891 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:49,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1013492058, now seen corresponding path program 1 times [2021-11-25 17:50:49,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:49,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907295777] [2021-11-25 17:50:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:49,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:50,001 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:50,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907295777] [2021-11-25 17:50:50,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907295777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:50,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:50,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:50:50,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741090890] [2021-11-25 17:50:50,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:50,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:50:50,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:50:50,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:50:50,004 INFO L87 Difference]: Start difference. First operand 225 states and 272 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:50,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:50,418 INFO L93 Difference]: Finished difference Result 426 states and 506 transitions. [2021-11-25 17:50:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:50:50,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-25 17:50:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:50,420 INFO L225 Difference]: With dead ends: 426 [2021-11-25 17:50:50,421 INFO L226 Difference]: Without dead ends: 312 [2021-11-25 17:50:50,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:50,422 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 1040 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:50,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 504 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:50:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-25 17:50:50,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 225. [2021-11-25 17:50:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.266355140186916) internal successors, (271), 224 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:50,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 271 transitions. [2021-11-25 17:50:50,455 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 271 transitions. Word has length 60 [2021-11-25 17:50:50,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:50,456 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 271 transitions. [2021-11-25 17:50:50,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:50,456 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 271 transitions. [2021-11-25 17:50:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 17:50:50,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:50,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:50,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 17:50:50,458 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:50,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:50,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1005199851, now seen corresponding path program 1 times [2021-11-25 17:50:50,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:50,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683567263] [2021-11-25 17:50:50,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:50,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:50,611 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:50,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683567263] [2021-11-25 17:50:50,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683567263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:50,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:50,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:50:50,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846353096] [2021-11-25 17:50:50,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:50,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:50:50,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:50,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:50:50,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:50:50,614 INFO L87 Difference]: Start difference. First operand 225 states and 271 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:51,340 INFO L93 Difference]: Finished difference Result 427 states and 522 transitions. [2021-11-25 17:50:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:50:51,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-25 17:50:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:51,343 INFO L225 Difference]: With dead ends: 427 [2021-11-25 17:50:51,343 INFO L226 Difference]: Without dead ends: 410 [2021-11-25 17:50:51,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:50:51,345 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1055 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:51,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 900 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-25 17:50:51,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 225. [2021-11-25 17:50:51,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2616822429906542) internal successors, (270), 224 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 270 transitions. [2021-11-25 17:50:51,369 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 270 transitions. Word has length 62 [2021-11-25 17:50:51,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:51,370 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 270 transitions. [2021-11-25 17:50:51,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 270 transitions. [2021-11-25 17:50:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 17:50:51,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:51,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:51,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 17:50:51,371 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:51,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:51,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1319054290, now seen corresponding path program 1 times [2021-11-25 17:50:51,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:51,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984469315] [2021-11-25 17:50:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:51,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:51,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:51,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984469315] [2021-11-25 17:50:51,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984469315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:51,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:51,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:50:51,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636486565] [2021-11-25 17:50:51,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:51,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:50:51,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:51,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:50:51,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:50:51,483 INFO L87 Difference]: Start difference. First operand 225 states and 270 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:52,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:52,127 INFO L93 Difference]: Finished difference Result 407 states and 491 transitions. [2021-11-25 17:50:52,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:50:52,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-25 17:50:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:52,143 INFO L225 Difference]: With dead ends: 407 [2021-11-25 17:50:52,143 INFO L226 Difference]: Without dead ends: 402 [2021-11-25 17:50:52,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:50:52,144 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 642 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:52,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 1058 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-25 17:50:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 225. [2021-11-25 17:50:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2570093457943925) internal successors, (269), 224 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 269 transitions. [2021-11-25 17:50:52,171 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 269 transitions. Word has length 62 [2021-11-25 17:50:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:52,171 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 269 transitions. [2021-11-25 17:50:52,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 269 transitions. [2021-11-25 17:50:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 17:50:52,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:52,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:52,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 17:50:52,173 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:52,174 INFO L85 PathProgramCache]: Analyzing trace with hash -806955644, now seen corresponding path program 1 times [2021-11-25 17:50:52,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:52,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379357450] [2021-11-25 17:50:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:52,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:52,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:52,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379357450] [2021-11-25 17:50:52,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379357450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:52,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:52,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:50:52,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295221539] [2021-11-25 17:50:52,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:52,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:50:52,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:50:52,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:50:52,275 INFO L87 Difference]: Start difference. First operand 225 states and 269 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:52,927 INFO L93 Difference]: Finished difference Result 489 states and 598 transitions. [2021-11-25 17:50:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:50:52,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-25 17:50:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:52,930 INFO L225 Difference]: With dead ends: 489 [2021-11-25 17:50:52,930 INFO L226 Difference]: Without dead ends: 414 [2021-11-25 17:50:52,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:50:52,931 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 717 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:52,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 965 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-25 17:50:52,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 225. [2021-11-25 17:50:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2523364485981308) internal successors, (268), 224 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:52,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 268 transitions. [2021-11-25 17:50:52,956 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 268 transitions. Word has length 62 [2021-11-25 17:50:52,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:52,956 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 268 transitions. [2021-11-25 17:50:52,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:52,956 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 268 transitions. [2021-11-25 17:50:52,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 17:50:52,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:52,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:52,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 17:50:52,958 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:52,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:52,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2033918897, now seen corresponding path program 1 times [2021-11-25 17:50:52,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:52,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592287055] [2021-11-25 17:50:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:52,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:53,093 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:53,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592287055] [2021-11-25 17:50:53,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592287055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:53,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:53,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:50:53,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291092402] [2021-11-25 17:50:53,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:53,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:50:53,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:53,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:50:53,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:50:53,096 INFO L87 Difference]: Start difference. First operand 225 states and 268 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:53,769 INFO L93 Difference]: Finished difference Result 462 states and 566 transitions. [2021-11-25 17:50:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:50:53,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-25 17:50:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:53,772 INFO L225 Difference]: With dead ends: 462 [2021-11-25 17:50:53,772 INFO L226 Difference]: Without dead ends: 410 [2021-11-25 17:50:53,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:50:53,774 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1029 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:53,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 970 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:50:53,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-25 17:50:53,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 225. [2021-11-25 17:50:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2476635514018692) internal successors, (267), 224 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 267 transitions. [2021-11-25 17:50:53,800 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 267 transitions. Word has length 62 [2021-11-25 17:50:53,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:53,800 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 267 transitions. [2021-11-25 17:50:53,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:53,800 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 267 transitions. [2021-11-25 17:50:53,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 17:50:53,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:53,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:53,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 17:50:53,802 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:53,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:53,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1443459928, now seen corresponding path program 1 times [2021-11-25 17:50:53,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:53,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720077164] [2021-11-25 17:50:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:53,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:53,940 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:53,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720077164] [2021-11-25 17:50:53,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720077164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:53,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:53,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:50:53,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648770088] [2021-11-25 17:50:53,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:53,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:50:53,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:50:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:50:53,942 INFO L87 Difference]: Start difference. First operand 225 states and 267 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:54,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:54,632 INFO L93 Difference]: Finished difference Result 442 states and 535 transitions. [2021-11-25 17:50:54,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:50:54,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-25 17:50:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:54,635 INFO L225 Difference]: With dead ends: 442 [2021-11-25 17:50:54,635 INFO L226 Difference]: Without dead ends: 402 [2021-11-25 17:50:54,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:50:54,637 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 985 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:54,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 895 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:50:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-25 17:50:54,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 225. [2021-11-25 17:50:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2429906542056075) internal successors, (266), 224 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 266 transitions. [2021-11-25 17:50:54,662 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 266 transitions. Word has length 62 [2021-11-25 17:50:54,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:54,663 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 266 transitions. [2021-11-25 17:50:54,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 266 transitions. [2021-11-25 17:50:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 17:50:54,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:54,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:54,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 17:50:54,665 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:54,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:54,665 INFO L85 PathProgramCache]: Analyzing trace with hash 823720425, now seen corresponding path program 1 times [2021-11-25 17:50:54,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:54,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095667189] [2021-11-25 17:50:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:54,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:54,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:54,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095667189] [2021-11-25 17:50:54,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095667189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:54,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:54,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:50:54,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062590058] [2021-11-25 17:50:54,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:54,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:50:54,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:54,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:50:54,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:50:54,791 INFO L87 Difference]: Start difference. First operand 225 states and 266 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:55,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:55,441 INFO L93 Difference]: Finished difference Result 407 states and 487 transitions. [2021-11-25 17:50:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:50:55,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-25 17:50:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:55,444 INFO L225 Difference]: With dead ends: 407 [2021-11-25 17:50:55,444 INFO L226 Difference]: Without dead ends: 402 [2021-11-25 17:50:55,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:50:55,445 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 665 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:55,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 909 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:50:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-25 17:50:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 225. [2021-11-25 17:50:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2383177570093458) internal successors, (265), 224 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:55,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 265 transitions. [2021-11-25 17:50:55,473 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 265 transitions. Word has length 62 [2021-11-25 17:50:55,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:55,473 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 265 transitions. [2021-11-25 17:50:55,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:55,473 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 265 transitions. [2021-11-25 17:50:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 17:50:55,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:55,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:55,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 17:50:55,476 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:55,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:55,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2020699465, now seen corresponding path program 1 times [2021-11-25 17:50:55,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:55,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063569976] [2021-11-25 17:50:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:55,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:55,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:55,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063569976] [2021-11-25 17:50:55,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063569976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:55,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:55,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:50:55,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367293511] [2021-11-25 17:50:55,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:55,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:50:55,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:50:55,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:50:55,581 INFO L87 Difference]: Start difference. First operand 225 states and 265 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:56,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:56,277 INFO L93 Difference]: Finished difference Result 439 states and 529 transitions. [2021-11-25 17:50:56,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:50:56,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-25 17:50:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:56,280 INFO L225 Difference]: With dead ends: 439 [2021-11-25 17:50:56,281 INFO L226 Difference]: Without dead ends: 402 [2021-11-25 17:50:56,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:50:56,283 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 994 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:56,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [994 Valid, 859 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-25 17:50:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 225. [2021-11-25 17:50:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.233644859813084) internal successors, (264), 224 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 264 transitions. [2021-11-25 17:50:56,313 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 264 transitions. Word has length 62 [2021-11-25 17:50:56,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:56,313 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 264 transitions. [2021-11-25 17:50:56,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 264 transitions. [2021-11-25 17:50:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 17:50:56,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:56,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:56,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 17:50:56,315 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:50:56,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:56,316 INFO L85 PathProgramCache]: Analyzing trace with hash -29192250, now seen corresponding path program 1 times [2021-11-25 17:50:56,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:56,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38034319] [2021-11-25 17:50:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:56,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:57,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:57,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38034319] [2021-11-25 17:50:57,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38034319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:57,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:57,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-25 17:50:57,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32235438] [2021-11-25 17:50:57,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:57,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 17:50:57,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:57,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 17:50:57,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2021-11-25 17:50:57,315 INFO L87 Difference]: Start difference. First operand 225 states and 264 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:01,036 INFO L93 Difference]: Finished difference Result 677 states and 786 transitions. [2021-11-25 17:51:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 17:51:01,037 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-25 17:51:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:01,041 INFO L225 Difference]: With dead ends: 677 [2021-11-25 17:51:01,042 INFO L226 Difference]: Without dead ends: 673 [2021-11-25 17:51:01,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=316, Invalid=1664, Unknown=0, NotChecked=0, Total=1980 [2021-11-25 17:51:01,048 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 2169 mSDsluCounter, 5960 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 6423 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:01,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2169 Valid, 6423 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 17:51:01,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-11-25 17:51:01,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 240. [2021-11-25 17:51:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 229 states have (on average 1.240174672489083) internal successors, (284), 239 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 284 transitions. [2021-11-25 17:51:01,088 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 284 transitions. Word has length 64 [2021-11-25 17:51:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:01,088 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 284 transitions. [2021-11-25 17:51:01,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 284 transitions. [2021-11-25 17:51:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 17:51:01,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:01,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:01,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 17:51:01,089 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:01,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:01,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2063869805, now seen corresponding path program 1 times [2021-11-25 17:51:01,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:01,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573885339] [2021-11-25 17:51:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:01,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:01,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:01,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573885339] [2021-11-25 17:51:01,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573885339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:01,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:01,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-25 17:51:01,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960753748] [2021-11-25 17:51:01,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:01,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 17:51:01,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:01,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 17:51:01,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:51:01,803 INFO L87 Difference]: Start difference. First operand 240 states and 284 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:04,678 INFO L93 Difference]: Finished difference Result 691 states and 813 transitions. [2021-11-25 17:51:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 17:51:04,679 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-25 17:51:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:04,682 INFO L225 Difference]: With dead ends: 691 [2021-11-25 17:51:04,682 INFO L226 Difference]: Without dead ends: 649 [2021-11-25 17:51:04,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=1362, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 17:51:04,684 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 1956 mSDsluCounter, 6144 mSDsCounter, 0 mSdLazyCounter, 3490 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 6619 SdHoareTripleChecker+Invalid, 3578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:04,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1956 Valid, 6619 Invalid, 3578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3490 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 17:51:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-11-25 17:51:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 245. [2021-11-25 17:51:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.2393162393162394) internal successors, (290), 244 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 290 transitions. [2021-11-25 17:51:04,725 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 290 transitions. Word has length 64 [2021-11-25 17:51:04,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:04,726 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 290 transitions. [2021-11-25 17:51:04,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 290 transitions. [2021-11-25 17:51:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 17:51:04,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:04,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:04,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 17:51:04,728 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:04,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1085248927, now seen corresponding path program 1 times [2021-11-25 17:51:04,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:04,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890984925] [2021-11-25 17:51:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:04,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:05,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:05,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890984925] [2021-11-25 17:51:05,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890984925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:05,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:05,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:51:05,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383268730] [2021-11-25 17:51:05,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:05,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:51:05,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:05,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:51:05,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:51:05,024 INFO L87 Difference]: Start difference. First operand 245 states and 290 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:05,983 INFO L93 Difference]: Finished difference Result 553 states and 679 transitions. [2021-11-25 17:51:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:51:05,983 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-25 17:51:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:05,986 INFO L225 Difference]: With dead ends: 553 [2021-11-25 17:51:05,986 INFO L226 Difference]: Without dead ends: 502 [2021-11-25 17:51:05,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:51:05,987 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 1090 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:05,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 2778 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:51:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-11-25 17:51:06,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 229. [2021-11-25 17:51:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 220 states have (on average 1.231818181818182) internal successors, (271), 228 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:06,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 271 transitions. [2021-11-25 17:51:06,030 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 271 transitions. Word has length 64 [2021-11-25 17:51:06,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:06,030 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 271 transitions. [2021-11-25 17:51:06,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:06,030 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 271 transitions. [2021-11-25 17:51:06,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 17:51:06,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:06,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:06,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 17:51:06,032 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:06,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:06,032 INFO L85 PathProgramCache]: Analyzing trace with hash 632833740, now seen corresponding path program 1 times [2021-11-25 17:51:06,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:06,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570278141] [2021-11-25 17:51:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:06,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:06,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:06,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570278141] [2021-11-25 17:51:06,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570278141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:06,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:06,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:51:06,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059229348] [2021-11-25 17:51:06,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:06,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:51:06,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:06,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:51:06,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:51:06,289 INFO L87 Difference]: Start difference. First operand 229 states and 271 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:06,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:06,860 INFO L93 Difference]: Finished difference Result 454 states and 541 transitions. [2021-11-25 17:51:06,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 17:51:06,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-25 17:51:06,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:06,863 INFO L225 Difference]: With dead ends: 454 [2021-11-25 17:51:06,863 INFO L226 Difference]: Without dead ends: 356 [2021-11-25 17:51:06,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:51:06,864 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1088 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:06,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 904 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:51:06,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-25 17:51:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 166. [2021-11-25 17:51:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.204968944099379) internal successors, (194), 165 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 194 transitions. [2021-11-25 17:51:06,907 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 194 transitions. Word has length 64 [2021-11-25 17:51:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:06,908 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 194 transitions. [2021-11-25 17:51:06,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:06,908 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 194 transitions. [2021-11-25 17:51:06,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 17:51:06,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:06,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:06,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 17:51:06,910 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:06,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:06,910 INFO L85 PathProgramCache]: Analyzing trace with hash -735435847, now seen corresponding path program 1 times [2021-11-25 17:51:06,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:06,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337180871] [2021-11-25 17:51:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:06,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:07,102 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:07,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337180871] [2021-11-25 17:51:07,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337180871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:07,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:07,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:51:07,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823795167] [2021-11-25 17:51:07,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:07,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:51:07,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:51:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:51:07,105 INFO L87 Difference]: Start difference. First operand 166 states and 194 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:08,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:08,100 INFO L93 Difference]: Finished difference Result 344 states and 413 transitions. [2021-11-25 17:51:08,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:51:08,101 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 17:51:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:08,104 INFO L225 Difference]: With dead ends: 344 [2021-11-25 17:51:08,104 INFO L226 Difference]: Without dead ends: 337 [2021-11-25 17:51:08,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=215, Invalid=541, Unknown=0, NotChecked=0, Total=756 [2021-11-25 17:51:08,107 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 1322 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:08,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1322 Valid, 500 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:51:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-25 17:51:08,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 170. [2021-11-25 17:51:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.1939393939393939) internal successors, (197), 169 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 197 transitions. [2021-11-25 17:51:08,154 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 197 transitions. Word has length 65 [2021-11-25 17:51:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:08,156 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 197 transitions. [2021-11-25 17:51:08,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:08,156 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 197 transitions. [2021-11-25 17:51:08,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 17:51:08,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:08,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:08,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 17:51:08,164 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:08,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash 969526156, now seen corresponding path program 1 times [2021-11-25 17:51:08,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:08,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424472953] [2021-11-25 17:51:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:08,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:08,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:08,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424472953] [2021-11-25 17:51:08,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424472953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:08,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:08,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 17:51:08,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093364645] [2021-11-25 17:51:08,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:08,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 17:51:08,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 17:51:08,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:51:08,728 INFO L87 Difference]: Start difference. First operand 170 states and 197 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:10,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:10,287 INFO L93 Difference]: Finished difference Result 411 states and 484 transitions. [2021-11-25 17:51:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 17:51:10,287 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 17:51:10,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:10,290 INFO L225 Difference]: With dead ends: 411 [2021-11-25 17:51:10,290 INFO L226 Difference]: Without dead ends: 407 [2021-11-25 17:51:10,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 17:51:10,294 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1014 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:10,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 2482 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:51:10,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-25 17:51:10,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 170. [2021-11-25 17:51:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.1939393939393939) internal successors, (197), 169 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 197 transitions. [2021-11-25 17:51:10,350 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 197 transitions. Word has length 65 [2021-11-25 17:51:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:10,351 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 197 transitions. [2021-11-25 17:51:10,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 197 transitions. [2021-11-25 17:51:10,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 17:51:10,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:10,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:10,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 17:51:10,353 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:10,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:10,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1053254316, now seen corresponding path program 1 times [2021-11-25 17:51:10,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:10,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043948018] [2021-11-25 17:51:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:10,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:10,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:10,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043948018] [2021-11-25 17:51:10,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043948018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:10,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:10,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:51:10,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903933687] [2021-11-25 17:51:10,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:10,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:51:10,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:10,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:51:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:51:10,667 INFO L87 Difference]: Start difference. First operand 170 states and 197 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:11,251 INFO L93 Difference]: Finished difference Result 385 states and 468 transitions. [2021-11-25 17:51:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:51:11,252 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 17:51:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:11,253 INFO L225 Difference]: With dead ends: 385 [2021-11-25 17:51:11,253 INFO L226 Difference]: Without dead ends: 299 [2021-11-25 17:51:11,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:51:11,254 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 742 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:11,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 1374 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:51:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-25 17:51:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 113. [2021-11-25 17:51:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 112 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2021-11-25 17:51:11,294 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 65 [2021-11-25 17:51:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:11,294 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2021-11-25 17:51:11,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2021-11-25 17:51:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 17:51:11,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:11,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:11,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 17:51:11,296 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2125205281, now seen corresponding path program 1 times [2021-11-25 17:51:11,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:11,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296498044] [2021-11-25 17:51:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:11,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:11,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:11,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296498044] [2021-11-25 17:51:11,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296498044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:11,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:11,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:51:11,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162202769] [2021-11-25 17:51:11,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:11,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:51:11,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:11,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:51:11,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:51:11,393 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:11,776 INFO L93 Difference]: Finished difference Result 228 states and 273 transitions. [2021-11-25 17:51:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 17:51:11,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 17:51:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:11,778 INFO L225 Difference]: With dead ends: 228 [2021-11-25 17:51:11,779 INFO L226 Difference]: Without dead ends: 175 [2021-11-25 17:51:11,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:51:11,780 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 336 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:11,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 364 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:51:11,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-25 17:51:11,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 113. [2021-11-25 17:51:11,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.162162162162162) internal successors, (129), 112 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2021-11-25 17:51:11,819 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 65 [2021-11-25 17:51:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:11,819 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2021-11-25 17:51:11,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2021-11-25 17:51:11,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 17:51:11,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:11,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:11,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 17:51:11,821 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:11,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:11,822 INFO L85 PathProgramCache]: Analyzing trace with hash 846749532, now seen corresponding path program 1 times [2021-11-25 17:51:11,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:11,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820506332] [2021-11-25 17:51:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:11,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:12,488 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:12,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820506332] [2021-11-25 17:51:12,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820506332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:12,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:12,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-25 17:51:12,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553145602] [2021-11-25 17:51:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:12,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 17:51:12,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:12,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 17:51:12,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:51:12,490 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:14,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:14,502 INFO L93 Difference]: Finished difference Result 516 states and 632 transitions. [2021-11-25 17:51:14,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 17:51:14,502 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-25 17:51:14,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:14,505 INFO L225 Difference]: With dead ends: 516 [2021-11-25 17:51:14,505 INFO L226 Difference]: Without dead ends: 510 [2021-11-25 17:51:14,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=266, Invalid=1294, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 17:51:14,512 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1008 mSDsluCounter, 4020 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 4231 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:14,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 4231 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:51:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-11-25 17:51:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 129. [2021-11-25 17:51:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 127 states have (on average 1.1732283464566928) internal successors, (149), 128 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2021-11-25 17:51:14,552 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 67 [2021-11-25 17:51:14,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:14,553 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2021-11-25 17:51:14,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2021-11-25 17:51:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 17:51:14,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:14,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:14,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 17:51:14,554 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:14,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash 766856175, now seen corresponding path program 1 times [2021-11-25 17:51:14,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:14,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668150509] [2021-11-25 17:51:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:14,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:14,911 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:14,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668150509] [2021-11-25 17:51:14,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668150509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:14,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:14,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:51:14,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779558302] [2021-11-25 17:51:14,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:14,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:51:14,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:14,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:51:14,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:51:14,913 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:15,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:15,969 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2021-11-25 17:51:15,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:51:15,977 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-25 17:51:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:15,979 INFO L225 Difference]: With dead ends: 413 [2021-11-25 17:51:15,980 INFO L226 Difference]: Without dead ends: 407 [2021-11-25 17:51:15,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-25 17:51:15,981 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 778 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:15,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 1825 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:51:15,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-25 17:51:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 107. [2021-11-25 17:51:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 106 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions. [2021-11-25 17:51:16,019 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 68 [2021-11-25 17:51:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:16,020 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions. [2021-11-25 17:51:16,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions. [2021-11-25 17:51:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 17:51:16,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:16,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:16,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 17:51:16,022 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:16,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1347771711, now seen corresponding path program 1 times [2021-11-25 17:51:16,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:16,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594803821] [2021-11-25 17:51:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:16,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:16,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:16,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594803821] [2021-11-25 17:51:16,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594803821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:16,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:16,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:16,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284502970] [2021-11-25 17:51:16,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:16,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:16,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:16,073 INFO L87 Difference]: Start difference. First operand 107 states and 123 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:16,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:16,177 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2021-11-25 17:51:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:16,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-25 17:51:16,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:16,179 INFO L225 Difference]: With dead ends: 177 [2021-11-25 17:51:16,179 INFO L226 Difference]: Without dead ends: 142 [2021-11-25 17:51:16,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:16,180 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 52 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:16,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 232 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:51:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-25 17:51:16,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2021-11-25 17:51:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.2) internal successors, (162), 135 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:16,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2021-11-25 17:51:16,251 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 81 [2021-11-25 17:51:16,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:16,251 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2021-11-25 17:51:16,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2021-11-25 17:51:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-25 17:51:16,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:16,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:16,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 17:51:16,253 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:16,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:16,254 INFO L85 PathProgramCache]: Analyzing trace with hash -405318383, now seen corresponding path program 1 times [2021-11-25 17:51:16,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:16,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101986772] [2021-11-25 17:51:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:16,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:16,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:16,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101986772] [2021-11-25 17:51:16,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101986772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:16,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:16,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:16,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469864852] [2021-11-25 17:51:16,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:16,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:16,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:16,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:16,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:16,304 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:16,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:16,459 INFO L93 Difference]: Finished difference Result 264 states and 332 transitions. [2021-11-25 17:51:16,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:16,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-25 17:51:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:16,461 INFO L225 Difference]: With dead ends: 264 [2021-11-25 17:51:16,461 INFO L226 Difference]: Without dead ends: 200 [2021-11-25 17:51:16,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:16,462 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 45 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:16,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 232 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:51:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-25 17:51:16,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 190. [2021-11-25 17:51:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 189 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 234 transitions. [2021-11-25 17:51:16,561 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 234 transitions. Word has length 84 [2021-11-25 17:51:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:16,561 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 234 transitions. [2021-11-25 17:51:16,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:16,562 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 234 transitions. [2021-11-25 17:51:16,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 17:51:16,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:16,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:16,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 17:51:16,563 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:16,564 INFO L85 PathProgramCache]: Analyzing trace with hash -650880823, now seen corresponding path program 1 times [2021-11-25 17:51:16,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:16,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515074254] [2021-11-25 17:51:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:16,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:16,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:16,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515074254] [2021-11-25 17:51:16,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515074254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:16,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:16,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:16,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545917557] [2021-11-25 17:51:16,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:16,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:16,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:16,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:16,626 INFO L87 Difference]: Start difference. First operand 190 states and 234 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:16,826 INFO L93 Difference]: Finished difference Result 426 states and 548 transitions. [2021-11-25 17:51:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:16,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-25 17:51:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:16,828 INFO L225 Difference]: With dead ends: 426 [2021-11-25 17:51:16,828 INFO L226 Difference]: Without dead ends: 308 [2021-11-25 17:51:16,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:16,830 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 38 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:16,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 232 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:51:16,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-25 17:51:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 290. [2021-11-25 17:51:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.2664359861591696) internal successors, (366), 289 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 366 transitions. [2021-11-25 17:51:16,996 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 366 transitions. Word has length 87 [2021-11-25 17:51:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:16,997 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 366 transitions. [2021-11-25 17:51:16,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 366 transitions. [2021-11-25 17:51:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-25 17:51:16,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:16,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:16,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 17:51:16,998 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:16,999 INFO L85 PathProgramCache]: Analyzing trace with hash 502988294, now seen corresponding path program 1 times [2021-11-25 17:51:16,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:16,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900405944] [2021-11-25 17:51:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:17,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:17,046 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:17,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900405944] [2021-11-25 17:51:17,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900405944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:17,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:17,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:17,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587190450] [2021-11-25 17:51:17,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:17,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:17,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:17,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:17,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:17,049 INFO L87 Difference]: Start difference. First operand 290 states and 366 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:17,428 INFO L93 Difference]: Finished difference Result 726 states and 944 transitions. [2021-11-25 17:51:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:17,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-25 17:51:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:17,431 INFO L225 Difference]: With dead ends: 726 [2021-11-25 17:51:17,431 INFO L226 Difference]: Without dead ends: 508 [2021-11-25 17:51:17,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:17,432 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 28 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:17,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 232 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:51:17,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-25 17:51:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 474. [2021-11-25 17:51:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.2811839323467231) internal successors, (606), 473 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 606 transitions. [2021-11-25 17:51:17,727 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 606 transitions. Word has length 90 [2021-11-25 17:51:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:17,727 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 606 transitions. [2021-11-25 17:51:17,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:17,727 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 606 transitions. [2021-11-25 17:51:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 17:51:17,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:17,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:17,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 17:51:17,728 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:17,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:17,728 INFO L85 PathProgramCache]: Analyzing trace with hash 823532023, now seen corresponding path program 1 times [2021-11-25 17:51:17,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:17,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221724335] [2021-11-25 17:51:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:17,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:17,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:17,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221724335] [2021-11-25 17:51:17,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221724335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:17,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:17,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:51:17,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253553418] [2021-11-25 17:51:17,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:17,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:51:17,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:51:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 17:51:17,797 INFO L87 Difference]: Start difference. First operand 474 states and 606 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:18,854 INFO L93 Difference]: Finished difference Result 1778 states and 2304 transitions. [2021-11-25 17:51:18,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:51:18,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 17:51:18,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:18,862 INFO L225 Difference]: With dead ends: 1778 [2021-11-25 17:51:18,862 INFO L226 Difference]: Without dead ends: 1376 [2021-11-25 17:51:18,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:51:18,864 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 501 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:18,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 728 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:51:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-25 17:51:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 663. [2021-11-25 17:51:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.2734138972809668) internal successors, (843), 662 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 843 transitions. [2021-11-25 17:51:19,321 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 843 transitions. Word has length 93 [2021-11-25 17:51:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:19,321 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 843 transitions. [2021-11-25 17:51:19,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:19,322 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 843 transitions. [2021-11-25 17:51:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 17:51:19,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:19,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:19,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 17:51:19,323 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:19,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:19,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1187933713, now seen corresponding path program 1 times [2021-11-25 17:51:19,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:19,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910844536] [2021-11-25 17:51:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:19,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:19,448 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:19,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910844536] [2021-11-25 17:51:19,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910844536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:19,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:19,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:51:19,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732342479] [2021-11-25 17:51:19,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:19,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:51:19,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:51:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 17:51:19,450 INFO L87 Difference]: Start difference. First operand 663 states and 843 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:20,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:20,002 INFO L93 Difference]: Finished difference Result 1256 states and 1610 transitions. [2021-11-25 17:51:20,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:51:20,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 17:51:20,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:20,005 INFO L225 Difference]: With dead ends: 1256 [2021-11-25 17:51:20,006 INFO L226 Difference]: Without dead ends: 665 [2021-11-25 17:51:20,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:51:20,007 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 318 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:20,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 237 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:51:20,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-11-25 17:51:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2021-11-25 17:51:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.2719033232628398) internal successors, (842), 662 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 842 transitions. [2021-11-25 17:51:20,578 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 842 transitions. Word has length 95 [2021-11-25 17:51:20,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:20,579 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 842 transitions. [2021-11-25 17:51:20,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:20,579 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 842 transitions. [2021-11-25 17:51:20,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 17:51:20,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:20,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:20,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 17:51:20,582 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:20,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash 748689824, now seen corresponding path program 1 times [2021-11-25 17:51:20,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:20,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964105105] [2021-11-25 17:51:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:20,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:20,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:20,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964105105] [2021-11-25 17:51:20,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964105105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:20,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:20,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:20,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205856206] [2021-11-25 17:51:20,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:20,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:20,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:20,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:20,649 INFO L87 Difference]: Start difference. First operand 663 states and 842 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:21,376 INFO L93 Difference]: Finished difference Result 1496 states and 1920 transitions. [2021-11-25 17:51:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:21,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 17:51:21,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:21,380 INFO L225 Difference]: With dead ends: 1496 [2021-11-25 17:51:21,381 INFO L226 Difference]: Without dead ends: 905 [2021-11-25 17:51:21,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:21,383 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 62 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:21,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 179 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:51:21,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-11-25 17:51:22,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 903. [2021-11-25 17:51:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 902 states have (on average 1.26940133037694) internal successors, (1145), 902 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1145 transitions. [2021-11-25 17:51:22,043 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1145 transitions. Word has length 95 [2021-11-25 17:51:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:22,043 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1145 transitions. [2021-11-25 17:51:22,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1145 transitions. [2021-11-25 17:51:22,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 17:51:22,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:22,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:22,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 17:51:22,045 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:22,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:22,046 INFO L85 PathProgramCache]: Analyzing trace with hash -908407205, now seen corresponding path program 1 times [2021-11-25 17:51:22,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:22,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944790095] [2021-11-25 17:51:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:22,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:22,154 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:22,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944790095] [2021-11-25 17:51:22,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944790095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:22,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:22,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:51:22,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091561447] [2021-11-25 17:51:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:22,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:51:22,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:51:22,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:51:22,156 INFO L87 Difference]: Start difference. First operand 903 states and 1145 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:23,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:23,390 INFO L93 Difference]: Finished difference Result 1251 states and 1567 transitions. [2021-11-25 17:51:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:51:23,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-25 17:51:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:23,398 INFO L225 Difference]: With dead ends: 1251 [2021-11-25 17:51:23,398 INFO L226 Difference]: Without dead ends: 1249 [2021-11-25 17:51:23,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:51:23,400 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 256 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:23,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 744 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:51:23,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-11-25 17:51:24,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 903. [2021-11-25 17:51:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 902 states have (on average 1.2516629711751663) internal successors, (1129), 902 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:24,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1129 transitions. [2021-11-25 17:51:24,093 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1129 transitions. Word has length 96 [2021-11-25 17:51:24,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:24,093 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1129 transitions. [2021-11-25 17:51:24,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1129 transitions. [2021-11-25 17:51:24,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-25 17:51:24,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:24,095 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:24,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 17:51:24,095 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash -43011696, now seen corresponding path program 1 times [2021-11-25 17:51:24,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:24,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868028301] [2021-11-25 17:51:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:24,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 17:51:24,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:24,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868028301] [2021-11-25 17:51:24,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868028301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:24,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:24,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:51:24,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263159375] [2021-11-25 17:51:24,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:24,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:51:24,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:24,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:51:24,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:51:24,224 INFO L87 Difference]: Start difference. First operand 903 states and 1129 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:25,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:25,440 INFO L93 Difference]: Finished difference Result 2246 states and 2822 transitions. [2021-11-25 17:51:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 17:51:25,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-25 17:51:25,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:25,445 INFO L225 Difference]: With dead ends: 2246 [2021-11-25 17:51:25,445 INFO L226 Difference]: Without dead ends: 1409 [2021-11-25 17:51:25,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:51:25,447 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 302 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:25,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 387 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:51:25,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2021-11-25 17:51:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 903. [2021-11-25 17:51:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 902 states have (on average 1.2505543237250554) internal successors, (1128), 902 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:26,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1128 transitions. [2021-11-25 17:51:26,109 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1128 transitions. Word has length 110 [2021-11-25 17:51:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:26,110 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1128 transitions. [2021-11-25 17:51:26,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1128 transitions. [2021-11-25 17:51:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-25 17:51:26,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:26,128 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:26,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 17:51:26,129 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:26,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:26,129 INFO L85 PathProgramCache]: Analyzing trace with hash 936988651, now seen corresponding path program 1 times [2021-11-25 17:51:26,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:26,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493803813] [2021-11-25 17:51:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:26,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 17:51:26,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:26,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493803813] [2021-11-25 17:51:26,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493803813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:26,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:26,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-25 17:51:26,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666284936] [2021-11-25 17:51:26,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:26,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 17:51:26,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:26,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 17:51:26,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:51:26,694 INFO L87 Difference]: Start difference. First operand 903 states and 1128 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:30,900 INFO L93 Difference]: Finished difference Result 4112 states and 5168 transitions. [2021-11-25 17:51:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 17:51:30,901 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-25 17:51:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:30,913 INFO L225 Difference]: With dead ends: 4112 [2021-11-25 17:51:30,913 INFO L226 Difference]: Without dead ends: 3274 [2021-11-25 17:51:30,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 17:51:30,915 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 827 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 4806 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:30,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 4806 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 17:51:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-11-25 17:51:31,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 918. [2021-11-25 17:51:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 1.2486368593238821) internal successors, (1145), 917 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1145 transitions. [2021-11-25 17:51:31,541 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1145 transitions. Word has length 112 [2021-11-25 17:51:31,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:31,542 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 1145 transitions. [2021-11-25 17:51:31,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1145 transitions. [2021-11-25 17:51:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-25 17:51:31,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:31,544 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:31,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-25 17:51:31,544 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash 72496696, now seen corresponding path program 1 times [2021-11-25 17:51:31,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:31,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284645915] [2021-11-25 17:51:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:31,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:34,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:34,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284645915] [2021-11-25 17:51:34,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284645915] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:51:34,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469768112] [2021-11-25 17:51:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:34,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:51:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:51:34,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:51:34,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc0d7cd-c736-4c8d-824a-71c994bf641e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 17:51:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:35,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-25 17:51:35,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:51:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:51,738 INFO L328 TraceCheckSpWp]: Computing backward predicates...