./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:05:43,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:05:43,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:05:43,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:05:43,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:05:43,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:05:43,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:05:43,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:05:43,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:05:43,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:05:43,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:05:43,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:05:43,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:05:43,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:05:43,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:05:43,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:05:43,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:05:43,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:05:43,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:05:43,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:05:43,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:05:43,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:05:43,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:05:43,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:05:43,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:05:43,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:05:43,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:05:43,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:05:43,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:05:43,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:05:43,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:05:43,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:05:43,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:05:43,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:05:43,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:05:43,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:05:43,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:05:43,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:05:43,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:05:43,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:05:43,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:05:43,888 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 13:05:43,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:05:43,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:05:43,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:05:43,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:05:43,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:05:43,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:05:43,910 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:05:43,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:05:43,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 13:05:43,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:05:43,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:05:43,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:05:43,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:05:43,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:05:43,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:05:43,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:05:43,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:05:43,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:05:43,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:05:43,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:05:43,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:05:43,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:05:43,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:05:43,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 13:05:43,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 13:05:43,913 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:05:43,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:05:43,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:05:43,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:05:43,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c [2021-11-02 13:05:44,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:05:44,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:05:44,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:05:44,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:05:44,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:05:44,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-11-02 13:05:44,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25d32616/aa8d671db6c6455cabb83bc4de66dde7/FLAGbf28354ed [2021-11-02 13:05:44,795 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:05:44,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-11-02 13:05:44,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25d32616/aa8d671db6c6455cabb83bc4de66dde7/FLAGbf28354ed [2021-11-02 13:05:44,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25d32616/aa8d671db6c6455cabb83bc4de66dde7 [2021-11-02 13:05:44,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:05:44,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:05:44,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:05:44,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:05:44,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:05:44,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:05:44" (1/1) ... [2021-11-02 13:05:44,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2968a8b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:44, skipping insertion in model container [2021-11-02 13:05:44,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:05:44" (1/1) ... [2021-11-02 13:05:44,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:05:45,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:05:45,263 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4492,4505] [2021-11-02 13:05:45,271 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4552,4565] [2021-11-02 13:05:45,296 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:05:45,302 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:05:45,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:45,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:45,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:45,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:45,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:45,911 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:45,911 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:45,912 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:45,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:05:46,151 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:05:46,159 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:05:46,160 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:05:46,161 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:05:46,161 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:05:46,162 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:05:46,162 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:05:46,163 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:05:46,163 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:05:46,292 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:05:46,354 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,355 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:05:46,486 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:05:46,522 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4492,4505] [2021-11-02 13:05:46,540 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4552,4565] [2021-11-02 13:05:46,543 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:05:46,544 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:05:46,577 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,578 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,578 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,578 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,580 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,593 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,593 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,594 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,595 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,631 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:05:46,632 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:05:46,633 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:05:46,633 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:05:46,633 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:05:46,634 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:05:46,634 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:05:46,634 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:05:46,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:05:46,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:05:46,657 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:05:46,697 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:05:46,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:05:46,876 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:05:46,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46 WrapperNode [2021-11-02 13:05:46,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:05:46,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:05:46,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:05:46,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:05:46,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46" (1/1) ... [2021-11-02 13:05:46,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46" (1/1) ... [2021-11-02 13:05:47,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:05:47,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:05:47,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:05:47,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:05:47,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46" (1/1) ... [2021-11-02 13:05:47,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46" (1/1) ... [2021-11-02 13:05:47,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46" (1/1) ... [2021-11-02 13:05:47,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46" (1/1) ... [2021-11-02 13:05:47,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46" (1/1) ... [2021-11-02 13:05:47,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46" (1/1) ... [2021-11-02 13:05:47,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46" (1/1) ... [2021-11-02 13:05:47,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:05:47,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:05:47,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:05:47,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:05:47,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46" (1/1) ... [2021-11-02 13:05:47,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:05:47,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:05:47,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 13:05:47,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 13:05:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 13:05:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:05:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 13:05:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:05:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:05:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:05:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:05:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:05:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:05:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:05:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 13:05:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 13:05:51,603 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:05:51,603 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-11-02 13:05:51,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:05:51 BoogieIcfgContainer [2021-11-02 13:05:51,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:05:51,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:05:51,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:05:51,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:05:51,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:05:44" (1/3) ... [2021-11-02 13:05:51,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6c3b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:05:51, skipping insertion in model container [2021-11-02 13:05:51,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:05:46" (2/3) ... [2021-11-02 13:05:51,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6c3b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:05:51, skipping insertion in model container [2021-11-02 13:05:51,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:05:51" (3/3) ... [2021-11-02 13:05:51,617 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_harness.i [2021-11-02 13:05:51,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:05:51,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-02 13:05:51,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:05:51,672 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=PETRI_NET, 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 [2021-11-02 13:05:51,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-02 13:05:51,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 183 states have (on average 1.46448087431694) internal successors, (268), 192 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) [2021-11-02 13:05:51,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 13:05:51,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:05:51,705 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] [2021-11-02 13:05:51,706 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:05:51,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:05:51,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2073123034, now seen corresponding path program 1 times [2021-11-02 13:05:51,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:05:51,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120238926] [2021-11-02 13:05:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:05:51,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:05:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:05:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:05:52,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:05:52,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120238926] [2021-11-02 13:05:52,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120238926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:05:52,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:05:52,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 13:05:52,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049087420] [2021-11-02 13:05:52,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:05:52,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:05:52,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:05:52,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:05:52,290 INFO L87 Difference]: Start difference. First operand has 193 states, 183 states have (on average 1.46448087431694) internal successors, (268), 192 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) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:05:54,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:05:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:05:55,598 INFO L93 Difference]: Finished difference Result 382 states and 531 transitions. [2021-11-02 13:05:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:05:55,601 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 13:05:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:05:55,607 INFO L225 Difference]: With dead ends: 382 [2021-11-02 13:05:55,607 INFO L226 Difference]: Without dead ends: 186 [2021-11-02 13:05:55,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:05:55,611 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2908.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3235.92ms IncrementalHoareTripleChecker+Time [2021-11-02 13:05:55,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 246 Unknown, 0 Unchecked, 4.33ms Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 1 Unknown, 0 Unchecked, 3235.92ms Time] [2021-11-02 13:05:55,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-02 13:05:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-02 13:05:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.3389830508474576) internal successors, (237), 185 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:05:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 237 transitions. [2021-11-02 13:05:55,667 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 237 transitions. Word has length 41 [2021-11-02 13:05:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:05:55,669 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 237 transitions. [2021-11-02 13:05:55,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:05:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 237 transitions. [2021-11-02 13:05:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 13:05:55,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:05:55,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:05:55,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 13:05:55,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:05:55,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:05:55,677 INFO L85 PathProgramCache]: Analyzing trace with hash 706757656, now seen corresponding path program 1 times [2021-11-02 13:05:55,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:05:55,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754646002] [2021-11-02 13:05:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:05:55,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:05:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:05:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:05:55,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:05:55,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754646002] [2021-11-02 13:05:55,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754646002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:05:55,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:05:55,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:05:55,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067462127] [2021-11-02 13:05:55,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:05:55,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:05:55,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:05:55,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:05:55,996 INFO L87 Difference]: Start difference. First operand 186 states and 237 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:05:58,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:00,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:00,011 INFO L93 Difference]: Finished difference Result 351 states and 447 transitions. [2021-11-02 13:06:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:06:00,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 13:06:00,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:00,012 INFO L225 Difference]: With dead ends: 351 [2021-11-02 13:06:00,012 INFO L226 Difference]: Without dead ends: 186 [2021-11-02 13:06:00,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.88ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:06:00,014 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3633.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.66ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3956.25ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:00,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 377 Unknown, 0 Unchecked, 10.66ms Time], IncrementalHoareTripleChecker [9 Valid, 367 Invalid, 1 Unknown, 0 Unchecked, 3956.25ms Time] [2021-11-02 13:06:00,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-02 13:06:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-02 13:06:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.3220338983050848) internal successors, (234), 185 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) [2021-11-02 13:06:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 234 transitions. [2021-11-02 13:06:00,023 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 234 transitions. Word has length 41 [2021-11-02 13:06:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:00,023 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 234 transitions. [2021-11-02 13:06:00,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:00,024 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 234 transitions. [2021-11-02 13:06:00,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 13:06:00,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:00,025 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] [2021-11-02 13:06:00,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 13:06:00,025 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:06:00,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:00,026 INFO L85 PathProgramCache]: Analyzing trace with hash 115187874, now seen corresponding path program 1 times [2021-11-02 13:06:00,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:00,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164719422] [2021-11-02 13:06:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:00,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:06:00,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:00,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164719422] [2021-11-02 13:06:00,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164719422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:00,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:00,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:06:00,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321048947] [2021-11-02 13:06:00,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:06:00,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:00,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:06:00,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:06:00,504 INFO L87 Difference]: Start difference. First operand 186 states and 234 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:02,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:04,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:04,510 INFO L93 Difference]: Finished difference Result 270 states and 336 transitions. [2021-11-02 13:06:04,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:06:04,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-02 13:06:04,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:04,521 INFO L225 Difference]: With dead ends: 270 [2021-11-02 13:06:04,521 INFO L226 Difference]: Without dead ends: 186 [2021-11-02 13:06:04,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 277.72ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:06:04,522 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 689 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3486.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.52ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3799.47ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:04,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 0 Invalid, 447 Unknown, 0 Unchecked, 13.52ms Time], IncrementalHoareTripleChecker [9 Valid, 437 Invalid, 1 Unknown, 0 Unchecked, 3799.47ms Time] [2021-11-02 13:06:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-02 13:06:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-02 13:06:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.3163841807909604) internal successors, (233), 185 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2021-11-02 13:06:04,534 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 233 transitions. Word has length 45 [2021-11-02 13:06:04,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:04,534 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 233 transitions. [2021-11-02 13:06:04,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:04,535 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 233 transitions. [2021-11-02 13:06:04,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 13:06:04,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:04,536 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] [2021-11-02 13:06:04,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 13:06:04,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:06:04,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1630129501, now seen corresponding path program 1 times [2021-11-02 13:06:04,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:04,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657163222] [2021-11-02 13:06:04,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:04,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:06:04,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:04,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657163222] [2021-11-02 13:06:04,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657163222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:04,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:04,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:06:04,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865003160] [2021-11-02 13:06:04,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:06:04,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:06:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:06:04,824 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:06,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:08,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:08,576 INFO L93 Difference]: Finished difference Result 326 states and 408 transitions. [2021-11-02 13:06:08,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:06:08,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-02 13:06:08,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:08,578 INFO L225 Difference]: With dead ends: 326 [2021-11-02 13:06:08,578 INFO L226 Difference]: Without dead ends: 186 [2021-11-02 13:06:08,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 144.40ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:06:08,579 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 448 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3325.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.38ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3611.14ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:08,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 0 Invalid, 439 Unknown, 0 Unchecked, 9.38ms Time], IncrementalHoareTripleChecker [10 Valid, 428 Invalid, 1 Unknown, 0 Unchecked, 3611.14ms Time] [2021-11-02 13:06:08,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-02 13:06:08,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-02 13:06:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.2937853107344632) internal successors, (229), 185 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 229 transitions. [2021-11-02 13:06:08,586 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 229 transitions. Word has length 47 [2021-11-02 13:06:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:08,586 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 229 transitions. [2021-11-02 13:06:08,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 229 transitions. [2021-11-02 13:06:08,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 13:06:08,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:08,588 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] [2021-11-02 13:06:08,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 13:06:08,588 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:06:08,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash -240029768, now seen corresponding path program 1 times [2021-11-02 13:06:08,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:08,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405692714] [2021-11-02 13:06:08,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:08,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:06:09,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:09,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405692714] [2021-11-02 13:06:09,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405692714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:09,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:09,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:06:09,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564078561] [2021-11-02 13:06:09,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:06:09,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:09,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:06:09,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:06:09,239 INFO L87 Difference]: Start difference. First operand 186 states and 229 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:11,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:21,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:21,285 INFO L93 Difference]: Finished difference Result 1025 states and 1246 transitions. [2021-11-02 13:06:21,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-02 13:06:21,286 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-02 13:06:21,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:21,289 INFO L225 Difference]: With dead ends: 1025 [2021-11-02 13:06:21,289 INFO L226 Difference]: Without dead ends: 931 [2021-11-02 13:06:21,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 2353.28ms TimeCoverageRelationStatistics Valid=411, Invalid=1569, Unknown=0, NotChecked=0, Total=1980 [2021-11-02 13:06:21,291 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1834 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9166.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.90ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9763.07ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:21,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1834 Valid, 0 Invalid, 2533 Unknown, 0 Unchecked, 40.90ms Time], IncrementalHoareTripleChecker [62 Valid, 2470 Invalid, 1 Unknown, 0 Unchecked, 9763.07ms Time] [2021-11-02 13:06:21,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-11-02 13:06:21,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 222. [2021-11-02 13:06:21,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 213 states have (on average 1.2816901408450705) internal successors, (273), 221 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) [2021-11-02 13:06:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 273 transitions. [2021-11-02 13:06:21,313 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 273 transitions. Word has length 49 [2021-11-02 13:06:21,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:21,314 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 273 transitions. [2021-11-02 13:06:21,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 273 transitions. [2021-11-02 13:06:21,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 13:06:21,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:21,315 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] [2021-11-02 13:06:21,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 13:06:21,316 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:06:21,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:21,316 INFO L85 PathProgramCache]: Analyzing trace with hash -624624434, now seen corresponding path program 1 times [2021-11-02 13:06:21,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:21,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873548436] [2021-11-02 13:06:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:21,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:21,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:06:21,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:21,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873548436] [2021-11-02 13:06:21,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873548436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:21,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:21,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:06:21,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55655072] [2021-11-02 13:06:21,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:06:21,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:21,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:06:21,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:06:21,856 INFO L87 Difference]: Start difference. First operand 222 states and 273 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:23,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:27,453 INFO L93 Difference]: Finished difference Result 381 states and 453 transitions. [2021-11-02 13:06:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:06:27,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-02 13:06:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:27,455 INFO L225 Difference]: With dead ends: 381 [2021-11-02 13:06:27,455 INFO L226 Difference]: Without dead ends: 373 [2021-11-02 13:06:27,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 246.45ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:06:27,456 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 273 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4925.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.39ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5373.48ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:27,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 0 Invalid, 1107 Unknown, 0 Unchecked, 10.39ms Time], IncrementalHoareTripleChecker [70 Valid, 1036 Invalid, 1 Unknown, 0 Unchecked, 5373.48ms Time] [2021-11-02 13:06:27,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-02 13:06:27,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 238. [2021-11-02 13:06:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 229 states have (on average 1.262008733624454) internal successors, (289), 237 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 289 transitions. [2021-11-02 13:06:27,467 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 289 transitions. Word has length 50 [2021-11-02 13:06:27,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:27,467 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 289 transitions. [2021-11-02 13:06:27,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 289 transitions. [2021-11-02 13:06:27,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 13:06:27,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:27,468 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] [2021-11-02 13:06:27,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 13:06:27,469 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:06:27,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:27,469 INFO L85 PathProgramCache]: Analyzing trace with hash -718379898, now seen corresponding path program 1 times [2021-11-02 13:06:27,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:27,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738086085] [2021-11-02 13:06:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:27,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:06:27,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:27,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738086085] [2021-11-02 13:06:27,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738086085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:27,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:27,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:06:27,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348774685] [2021-11-02 13:06:27,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:06:27,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:06:27,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:06:27,822 INFO L87 Difference]: Start difference. First operand 238 states and 289 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:29,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:33,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:33,448 INFO L93 Difference]: Finished difference Result 466 states and 559 transitions. [2021-11-02 13:06:33,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:06:33,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-02 13:06:33,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:33,449 INFO L225 Difference]: With dead ends: 466 [2021-11-02 13:06:33,449 INFO L226 Difference]: Without dead ends: 363 [2021-11-02 13:06:33,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 305.46ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:06:33,450 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 386 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5022.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.06ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5392.25ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:33,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 0 Invalid, 1125 Unknown, 0 Unchecked, 11.06ms Time], IncrementalHoareTripleChecker [32 Valid, 1092 Invalid, 1 Unknown, 0 Unchecked, 5392.25ms Time] [2021-11-02 13:06:33,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-02 13:06:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 264. [2021-11-02 13:06:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 255 states have (on average 1.2588235294117647) internal successors, (321), 263 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 321 transitions. [2021-11-02 13:06:33,458 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 321 transitions. Word has length 54 [2021-11-02 13:06:33,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:33,458 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 321 transitions. [2021-11-02 13:06:33,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:33,459 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 321 transitions. [2021-11-02 13:06:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 13:06:33,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:33,459 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] [2021-11-02 13:06:33,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 13:06:33,460 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:06:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash 124564344, now seen corresponding path program 1 times [2021-11-02 13:06:33,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:33,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122666240] [2021-11-02 13:06:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:33,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:06:34,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:34,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122666240] [2021-11-02 13:06:34,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122666240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:34,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:34,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:06:34,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083962730] [2021-11-02 13:06:34,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:06:34,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:06:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:06:34,113 INFO L87 Difference]: Start difference. First operand 264 states and 321 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:36,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:41,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:41,125 INFO L93 Difference]: Finished difference Result 762 states and 913 transitions. [2021-11-02 13:06:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 13:06:41,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 13:06:41,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:41,127 INFO L225 Difference]: With dead ends: 762 [2021-11-02 13:06:41,127 INFO L226 Difference]: Without dead ends: 623 [2021-11-02 13:06:41,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1045.71ms TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-11-02 13:06:41,128 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1470 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 83 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5631.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.51ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6091.17ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:41,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 0 Invalid, 1492 Unknown, 0 Unchecked, 14.51ms Time], IncrementalHoareTripleChecker [83 Valid, 1408 Invalid, 1 Unknown, 0 Unchecked, 6091.17ms Time] [2021-11-02 13:06:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-11-02 13:06:41,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 302. [2021-11-02 13:06:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 293 states have (on average 1.2593856655290103) internal successors, (369), 301 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 369 transitions. [2021-11-02 13:06:41,137 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 369 transitions. Word has length 57 [2021-11-02 13:06:41,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:41,137 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 369 transitions. [2021-11-02 13:06:41,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:41,137 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 369 transitions. [2021-11-02 13:06:41,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 13:06:41,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:41,138 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] [2021-11-02 13:06:41,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 13:06:41,138 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:06:41,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1734031737, now seen corresponding path program 1 times [2021-11-02 13:06:41,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:41,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966245122] [2021-11-02 13:06:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:41,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:06:41,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:41,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966245122] [2021-11-02 13:06:41,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966245122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:41,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:41,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:06:41,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404615709] [2021-11-02 13:06:41,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:06:41,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:06:41,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:06:41,731 INFO L87 Difference]: Start difference. First operand 302 states and 369 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2021-11-02 13:06:43,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:48,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:48,160 INFO L93 Difference]: Finished difference Result 824 states and 991 transitions. [2021-11-02 13:06:48,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 13:06:48,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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 [2021-11-02 13:06:48,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:48,162 INFO L225 Difference]: With dead ends: 824 [2021-11-02 13:06:48,162 INFO L226 Difference]: Without dead ends: 610 [2021-11-02 13:06:48,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 788.80ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:06:48,163 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1456 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5369.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.38ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5749.02ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:48,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1456 Valid, 0 Invalid, 1248 Unknown, 0 Unchecked, 13.38ms Time], IncrementalHoareTripleChecker [56 Valid, 1191 Invalid, 1 Unknown, 0 Unchecked, 5749.02ms Time] [2021-11-02 13:06:48,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-11-02 13:06:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 302. [2021-11-02 13:06:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 293 states have (on average 1.2559726962457338) internal successors, (368), 301 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 368 transitions. [2021-11-02 13:06:48,172 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 368 transitions. Word has length 60 [2021-11-02 13:06:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:48,173 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 368 transitions. [2021-11-02 13:06:48,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2021-11-02 13:06:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 368 transitions. [2021-11-02 13:06:48,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 13:06:48,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:48,174 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] [2021-11-02 13:06:48,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 13:06:48,174 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:06:48,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:48,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1987677883, now seen corresponding path program 1 times [2021-11-02 13:06:48,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:48,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791859433] [2021-11-02 13:06:48,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:48,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:06:48,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:48,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791859433] [2021-11-02 13:06:48,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791859433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:48,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:48,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:06:48,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680120057] [2021-11-02 13:06:48,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:06:48,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:48,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:06:48,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:06:48,491 INFO L87 Difference]: Start difference. First operand 302 states and 368 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) 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) [2021-11-02 13:06:50,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:54,791 INFO L93 Difference]: Finished difference Result 659 states and 789 transitions. [2021-11-02 13:06:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 13:06:54,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) 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 [2021-11-02 13:06:54,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:54,793 INFO L225 Difference]: With dead ends: 659 [2021-11-02 13:06:54,793 INFO L226 Difference]: Without dead ends: 450 [2021-11-02 13:06:54,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 426.13ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:06:54,794 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 679 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5522.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.39ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5901.61ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:54,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 0 Invalid, 1245 Unknown, 0 Unchecked, 11.39ms Time], IncrementalHoareTripleChecker [24 Valid, 1220 Invalid, 1 Unknown, 0 Unchecked, 5901.61ms Time] [2021-11-02 13:06:54,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-02 13:06:54,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 302. [2021-11-02 13:06:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 293 states have (on average 1.2525597269624573) internal successors, (367), 301 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:54,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 367 transitions. [2021-11-02 13:06:54,803 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 367 transitions. Word has length 60 [2021-11-02 13:06:54,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:54,803 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 367 transitions. [2021-11-02 13:06:54,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) 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) [2021-11-02 13:06:54,804 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 367 transitions. [2021-11-02 13:06:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 13:06:54,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:54,804 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] [2021-11-02 13:06:54,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 13:06:54,805 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:06:54,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1830554959, now seen corresponding path program 1 times [2021-11-02 13:06:54,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:54,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092581558] [2021-11-02 13:06:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:54,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:06:55,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:55,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092581558] [2021-11-02 13:06:55,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092581558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:55,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:55,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:06:55,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295089264] [2021-11-02 13:06:55,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:06:55,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:55,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:06:55,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:06:55,486 INFO L87 Difference]: Start difference. First operand 302 states and 367 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:57,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:07:02,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:02,045 INFO L93 Difference]: Finished difference Result 456 states and 538 transitions. [2021-11-02 13:07:02,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 13:07:02,045 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-02 13:07:02,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:02,050 INFO L225 Difference]: With dead ends: 456 [2021-11-02 13:07:02,050 INFO L226 Difference]: Without dead ends: 454 [2021-11-02 13:07:02,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 870.68ms TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:07:02,077 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1098 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5502.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.41ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5884.84ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:02,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 0 Invalid, 1357 Unknown, 0 Unchecked, 12.41ms Time], IncrementalHoareTripleChecker [50 Valid, 1306 Invalid, 1 Unknown, 0 Unchecked, 5884.84ms Time] [2021-11-02 13:07:02,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-02 13:07:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 331. [2021-11-02 13:07:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 322 states have (on average 1.2515527950310559) internal successors, (403), 330 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 403 transitions. [2021-11-02 13:07:02,086 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 403 transitions. Word has length 61 [2021-11-02 13:07:02,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:02,086 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 403 transitions. [2021-11-02 13:07:02,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:02,086 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 403 transitions. [2021-11-02 13:07:02,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 13:07:02,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:02,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:07:02,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 13:07:02,087 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:07:02,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1659492892, now seen corresponding path program 1 times [2021-11-02 13:07:02,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:02,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595827874] [2021-11-02 13:07:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:02,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:07:02,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:02,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595827874] [2021-11-02 13:07:02,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595827874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:02,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:02,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:07:02,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742759859] [2021-11-02 13:07:02,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:07:02,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:02,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:07:02,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:07:02,467 INFO L87 Difference]: Start difference. First operand 331 states and 403 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:04,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:07:10,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:10,042 INFO L93 Difference]: Finished difference Result 524 states and 613 transitions. [2021-11-02 13:07:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 13:07:10,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-02 13:07:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:10,044 INFO L225 Difference]: With dead ends: 524 [2021-11-02 13:07:10,044 INFO L226 Difference]: Without dead ends: 424 [2021-11-02 13:07:10,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 863.81ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-11-02 13:07:10,045 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 662 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6453.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.91ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6797.12ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:10,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 0 Invalid, 1723 Unknown, 0 Unchecked, 15.91ms Time], IncrementalHoareTripleChecker [57 Valid, 1665 Invalid, 1 Unknown, 0 Unchecked, 6797.12ms Time] [2021-11-02 13:07:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-02 13:07:10,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 335. [2021-11-02 13:07:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 326 states have (on average 1.2331288343558282) internal successors, (402), 334 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 402 transitions. [2021-11-02 13:07:10,055 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 402 transitions. Word has length 61 [2021-11-02 13:07:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:10,055 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 402 transitions. [2021-11-02 13:07:10,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 402 transitions. [2021-11-02 13:07:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 13:07:10,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:10,056 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] [2021-11-02 13:07:10,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 13:07:10,057 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:07:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:10,057 INFO L85 PathProgramCache]: Analyzing trace with hash 188662400, now seen corresponding path program 1 times [2021-11-02 13:07:10,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:10,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610444694] [2021-11-02 13:07:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:10,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:07:10,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:10,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610444694] [2021-11-02 13:07:10,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610444694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:10,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:10,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:07:10,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007934688] [2021-11-02 13:07:10,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:07:10,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:10,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:07:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:07:10,596 INFO L87 Difference]: Start difference. First operand 335 states and 402 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:12,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:07:22,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:22,701 INFO L93 Difference]: Finished difference Result 807 states and 962 transitions. [2021-11-02 13:07:22,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 13:07:22,702 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-02 13:07:22,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:22,704 INFO L225 Difference]: With dead ends: 807 [2021-11-02 13:07:22,704 INFO L226 Difference]: Without dead ends: 636 [2021-11-02 13:07:22,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1264.75ms TimeCoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2021-11-02 13:07:22,705 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 909 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 3383 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10362.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.47ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10955.38ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:22,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 0 Invalid, 3431 Unknown, 0 Unchecked, 26.47ms Time], IncrementalHoareTripleChecker [47 Valid, 3383 Invalid, 1 Unknown, 0 Unchecked, 10955.38ms Time] [2021-11-02 13:07:22,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-11-02 13:07:22,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 495. [2021-11-02 13:07:22,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 486 states have (on average 1.2469135802469136) internal successors, (606), 494 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) [2021-11-02 13:07:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 606 transitions. [2021-11-02 13:07:22,718 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 606 transitions. Word has length 61 [2021-11-02 13:07:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:22,719 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 606 transitions. [2021-11-02 13:07:22,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 606 transitions. [2021-11-02 13:07:22,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 13:07:22,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:22,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:07:22,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 13:07:22,720 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:07:22,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash -858774998, now seen corresponding path program 1 times [2021-11-02 13:07:22,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:22,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018100115] [2021-11-02 13:07:22,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:22,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:07:23,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:23,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018100115] [2021-11-02 13:07:23,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018100115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:23,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:23,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:07:23,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603348244] [2021-11-02 13:07:23,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:07:23,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:23,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:07:23,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:07:23,020 INFO L87 Difference]: Start difference. First operand 495 states and 606 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2021-11-02 13:07:25,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:07:27,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:27,801 INFO L93 Difference]: Finished difference Result 617 states and 736 transitions. [2021-11-02 13:07:27,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:07:27,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 [2021-11-02 13:07:27,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:27,802 INFO L225 Difference]: With dead ends: 617 [2021-11-02 13:07:27,803 INFO L226 Difference]: Without dead ends: 529 [2021-11-02 13:07:27,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 177.58ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:07:27,803 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 288 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4363.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.87ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4643.24ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:27,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 0 Invalid, 1008 Unknown, 0 Unchecked, 6.87ms Time], IncrementalHoareTripleChecker [15 Valid, 992 Invalid, 1 Unknown, 0 Unchecked, 4643.24ms Time] [2021-11-02 13:07:27,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-02 13:07:27,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 471. [2021-11-02 13:07:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 462 states have (on average 1.2337662337662338) internal successors, (570), 470 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 570 transitions. [2021-11-02 13:07:27,835 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 570 transitions. Word has length 64 [2021-11-02 13:07:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:27,836 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 570 transitions. [2021-11-02 13:07:27,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2021-11-02 13:07:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 570 transitions. [2021-11-02 13:07:27,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 13:07:27,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:27,837 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] [2021-11-02 13:07:27,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 13:07:27,837 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:07:27,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:27,838 INFO L85 PathProgramCache]: Analyzing trace with hash 18771313, now seen corresponding path program 1 times [2021-11-02 13:07:27,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:27,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763727288] [2021-11-02 13:07:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:27,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:07:28,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:28,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763727288] [2021-11-02 13:07:28,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763727288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:28,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:28,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 13:07:28,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314422013] [2021-11-02 13:07:28,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 13:07:28,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 13:07:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:07:28,773 INFO L87 Difference]: Start difference. First operand 471 states and 570 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 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) [2021-11-02 13:07:30,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:07:41,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:41,708 INFO L93 Difference]: Finished difference Result 916 states and 1095 transitions. [2021-11-02 13:07:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 13:07:41,709 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 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 [2021-11-02 13:07:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:41,711 INFO L225 Difference]: With dead ends: 916 [2021-11-02 13:07:41,711 INFO L226 Difference]: Without dead ends: 753 [2021-11-02 13:07:41,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1795.06ms TimeCoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 13:07:41,712 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1586 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 3436 mSolverCounterSat, 93 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10924.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.72ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11436.20ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:41,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1586 Valid, 0 Invalid, 3530 Unknown, 0 Unchecked, 32.72ms Time], IncrementalHoareTripleChecker [93 Valid, 3436 Invalid, 1 Unknown, 0 Unchecked, 11436.20ms Time] [2021-11-02 13:07:41,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-11-02 13:07:41,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 477. [2021-11-02 13:07:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 468 states have (on average 1.2307692307692308) internal successors, (576), 476 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 576 transitions. [2021-11-02 13:07:41,727 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 576 transitions. Word has length 64 [2021-11-02 13:07:41,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:41,727 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 576 transitions. [2021-11-02 13:07:41,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 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) [2021-11-02 13:07:41,727 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 576 transitions. [2021-11-02 13:07:41,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 13:07:41,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:41,728 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] [2021-11-02 13:07:41,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 13:07:41,728 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:07:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1817151224, now seen corresponding path program 1 times [2021-11-02 13:07:41,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:41,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559953859] [2021-11-02 13:07:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:41,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:07:42,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:42,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559953859] [2021-11-02 13:07:42,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559953859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:42,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:42,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:07:42,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446130098] [2021-11-02 13:07:42,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:07:42,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:42,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:07:42,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:07:42,048 INFO L87 Difference]: Start difference. First operand 477 states and 576 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) 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) [2021-11-02 13:07:44,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:07:49,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:49,843 INFO L93 Difference]: Finished difference Result 1113 states and 1320 transitions. [2021-11-02 13:07:49,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:07:49,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) 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 [2021-11-02 13:07:49,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:49,846 INFO L225 Difference]: With dead ends: 1113 [2021-11-02 13:07:49,846 INFO L226 Difference]: Without dead ends: 982 [2021-11-02 13:07:49,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 264.23ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:07:49,847 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1361 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7012.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.55ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7498.01ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:49,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1361 Valid, 0 Invalid, 1850 Unknown, 0 Unchecked, 18.55ms Time], IncrementalHoareTripleChecker [7 Valid, 1842 Invalid, 1 Unknown, 0 Unchecked, 7498.01ms Time] [2021-11-02 13:07:49,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-11-02 13:07:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 532. [2021-11-02 13:07:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 523 states have (on average 1.2275334608030593) internal successors, (642), 531 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 642 transitions. [2021-11-02 13:07:49,865 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 642 transitions. Word has length 65 [2021-11-02 13:07:49,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:49,866 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 642 transitions. [2021-11-02 13:07:49,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) 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) [2021-11-02 13:07:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 642 transitions. [2021-11-02 13:07:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 13:07:49,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:49,867 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] [2021-11-02 13:07:49,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 13:07:49,868 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:07:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:49,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1378303746, now seen corresponding path program 1 times [2021-11-02 13:07:49,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:49,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62215463] [2021-11-02 13:07:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:49,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:07:50,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:50,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62215463] [2021-11-02 13:07:50,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62215463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:50,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:50,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:07:50,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589768403] [2021-11-02 13:07:50,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:07:50,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:50,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:07:50,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:07:50,291 INFO L87 Difference]: Start difference. First operand 532 states and 642 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:52,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:07:57,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:57,706 INFO L93 Difference]: Finished difference Result 884 states and 1052 transitions. [2021-11-02 13:07:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 13:07:57,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 13:07:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:57,708 INFO L225 Difference]: With dead ends: 884 [2021-11-02 13:07:57,708 INFO L226 Difference]: Without dead ends: 718 [2021-11-02 13:07:57,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 684.52ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:07:57,709 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 357 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6393.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.10ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6810.57ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:57,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 0 Invalid, 1602 Unknown, 0 Unchecked, 13.10ms Time], IncrementalHoareTripleChecker [12 Valid, 1589 Invalid, 1 Unknown, 0 Unchecked, 6810.57ms Time] [2021-11-02 13:07:57,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-11-02 13:07:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 532. [2021-11-02 13:07:57,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 523 states have (on average 1.2237093690248566) internal successors, (640), 531 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 640 transitions. [2021-11-02 13:07:57,722 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 640 transitions. Word has length 66 [2021-11-02 13:07:57,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:57,722 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 640 transitions. [2021-11-02 13:07:57,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 640 transitions. [2021-11-02 13:07:57,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 13:07:57,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:57,724 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] [2021-11-02 13:07:57,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 13:07:57,724 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:07:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1965109760, now seen corresponding path program 1 times [2021-11-02 13:07:57,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:57,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712423028] [2021-11-02 13:07:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:57,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:07:58,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:58,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712423028] [2021-11-02 13:07:58,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712423028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:58,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:58,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:07:58,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693582656] [2021-11-02 13:07:58,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:07:58,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:58,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:07:58,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:07:58,226 INFO L87 Difference]: Start difference. First operand 532 states and 640 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:00,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:08:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:08:05,259 INFO L93 Difference]: Finished difference Result 1155 states and 1382 transitions. [2021-11-02 13:08:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:08:05,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 13:08:05,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:08:05,263 INFO L225 Difference]: With dead ends: 1155 [2021-11-02 13:08:05,263 INFO L226 Difference]: Without dead ends: 653 [2021-11-02 13:08:05,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 249.21ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:08:05,264 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6435.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.85ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6838.91ms IncrementalHoareTripleChecker+Time [2021-11-02 13:08:05,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 1667 Unknown, 0 Unchecked, 11.85ms Time], IncrementalHoareTripleChecker [50 Valid, 1616 Invalid, 1 Unknown, 0 Unchecked, 6838.91ms Time] [2021-11-02 13:08:05,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-11-02 13:08:05,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 532. [2021-11-02 13:08:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 523 states have (on average 1.2026768642447419) internal successors, (629), 531 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 629 transitions. [2021-11-02 13:08:05,285 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 629 transitions. Word has length 66 [2021-11-02 13:08:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:08:05,285 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 629 transitions. [2021-11-02 13:08:05,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 629 transitions. [2021-11-02 13:08:05,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 13:08:05,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:08:05,286 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] [2021-11-02 13:08:05,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 13:08:05,287 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:08:05,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:08:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash -276291235, now seen corresponding path program 1 times [2021-11-02 13:08:05,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:08:05,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277007988] [2021-11-02 13:08:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:08:05,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:08:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:08:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:08:05,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:08:05,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277007988] [2021-11-02 13:08:05,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277007988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:08:05,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:08:05,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:08:05,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441794342] [2021-11-02 13:08:05,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:08:05,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:08:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:08:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:08:05,498 INFO L87 Difference]: Start difference. First operand 532 states and 629 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:07,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:08:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:08:10,252 INFO L93 Difference]: Finished difference Result 1074 states and 1273 transitions. [2021-11-02 13:08:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:08:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-02 13:08:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:08:10,254 INFO L225 Difference]: With dead ends: 1074 [2021-11-02 13:08:10,254 INFO L226 Difference]: Without dead ends: 621 [2021-11-02 13:08:10,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 77.76ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:08:10,255 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 174 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4357.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.20ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4676.65ms IncrementalHoareTripleChecker+Time [2021-11-02 13:08:10,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 0 Invalid, 951 Unknown, 0 Unchecked, 6.20ms Time], IncrementalHoareTripleChecker [36 Valid, 914 Invalid, 1 Unknown, 0 Unchecked, 4676.65ms Time] [2021-11-02 13:08:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-11-02 13:08:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 532. [2021-11-02 13:08:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 523 states have (on average 1.1644359464627152) internal successors, (609), 531 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 609 transitions. [2021-11-02 13:08:10,270 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 609 transitions. Word has length 72 [2021-11-02 13:08:10,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:08:10,271 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 609 transitions. [2021-11-02 13:08:10,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:10,271 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 609 transitions. [2021-11-02 13:08:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 13:08:10,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:08:10,272 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] [2021-11-02 13:08:10,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 13:08:10,272 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:08:10,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:08:10,273 INFO L85 PathProgramCache]: Analyzing trace with hash -871921447, now seen corresponding path program 1 times [2021-11-02 13:08:10,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:08:10,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569347602] [2021-11-02 13:08:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:08:10,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:08:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:08:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:08:12,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:08:12,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569347602] [2021-11-02 13:08:12,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569347602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:08:12,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:08:12,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:08:12,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913278628] [2021-11-02 13:08:12,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:08:12,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:08:12,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:08:12,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:08:12,524 INFO L87 Difference]: Start difference. First operand 532 states and 609 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:14,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:08:20,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:08:20,718 INFO L93 Difference]: Finished difference Result 1051 states and 1200 transitions. [2021-11-02 13:08:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:08:20,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-02 13:08:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:08:20,720 INFO L225 Difference]: With dead ends: 1051 [2021-11-02 13:08:20,720 INFO L226 Difference]: Without dead ends: 594 [2021-11-02 13:08:20,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 593.43ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:08:20,722 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 580 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7298.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.74ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7782.67ms IncrementalHoareTripleChecker+Time [2021-11-02 13:08:20,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 0 Invalid, 1855 Unknown, 0 Unchecked, 16.74ms Time], IncrementalHoareTripleChecker [6 Valid, 1848 Invalid, 1 Unknown, 0 Unchecked, 7782.67ms Time] [2021-11-02 13:08:20,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-02 13:08:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 536. [2021-11-02 13:08:20,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 527 states have (on average 1.1631878557874762) internal successors, (613), 535 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 613 transitions. [2021-11-02 13:08:20,738 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 613 transitions. Word has length 72 [2021-11-02 13:08:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:08:20,739 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 613 transitions. [2021-11-02 13:08:20,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 613 transitions. [2021-11-02 13:08:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 13:08:20,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:08:20,740 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] [2021-11-02 13:08:20,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 13:08:20,740 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:08:20,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:08:20,741 INFO L85 PathProgramCache]: Analyzing trace with hash -590596247, now seen corresponding path program 1 times [2021-11-02 13:08:20,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:08:20,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787794502] [2021-11-02 13:08:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:08:20,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:08:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:08:21,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:08:21,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:08:21,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787794502] [2021-11-02 13:08:21,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787794502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:08:21,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:08:21,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 13:08:21,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432271196] [2021-11-02 13:08:21,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 13:08:21,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:08:21,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 13:08:21,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:08:21,622 INFO L87 Difference]: Start difference. First operand 536 states and 613 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:23,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:08:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:08:43,661 INFO L93 Difference]: Finished difference Result 1937 states and 2189 transitions. [2021-11-02 13:08:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-02 13:08:43,661 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-02 13:08:43,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:08:43,667 INFO L225 Difference]: With dead ends: 1937 [2021-11-02 13:08:43,668 INFO L226 Difference]: Without dead ends: 1794 [2021-11-02 13:08:43,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2437 ImplicationChecksByTransitivity, 6229.35ms TimeCoverageRelationStatistics Valid=1192, Invalid=6118, Unknown=0, NotChecked=0, Total=7310 [2021-11-02 13:08:43,670 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3703 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 4663 mSolverCounterSat, 115 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15121.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3703 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.19ms SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 4663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15964.63ms IncrementalHoareTripleChecker+Time [2021-11-02 13:08:43,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3703 Valid, 0 Invalid, 4779 Unknown, 0 Unchecked, 53.19ms Time], IncrementalHoareTripleChecker [115 Valid, 4663 Invalid, 1 Unknown, 0 Unchecked, 15964.63ms Time] [2021-11-02 13:08:43,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2021-11-02 13:08:43,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 610. [2021-11-02 13:08:43,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 601 states have (on average 1.1597337770382696) internal successors, (697), 609 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 697 transitions. [2021-11-02 13:08:43,706 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 697 transitions. Word has length 73 [2021-11-02 13:08:43,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:08:43,706 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 697 transitions. [2021-11-02 13:08:43,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:43,706 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 697 transitions. [2021-11-02 13:08:43,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 13:08:43,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:08:43,708 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] [2021-11-02 13:08:43,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 13:08:43,708 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:08:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:08:43,709 INFO L85 PathProgramCache]: Analyzing trace with hash 704129967, now seen corresponding path program 1 times [2021-11-02 13:08:43,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:08:43,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865549595] [2021-11-02 13:08:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:08:43,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:08:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:08:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:08:44,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:08:44,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865549595] [2021-11-02 13:08:44,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865549595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:08:44,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:08:44,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:08:44,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384236741] [2021-11-02 13:08:44,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:08:44,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:08:44,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:08:44,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:08:44,087 INFO L87 Difference]: Start difference. First operand 610 states and 697 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:46,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:08:51,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:08:51,965 INFO L93 Difference]: Finished difference Result 1204 states and 1368 transitions. [2021-11-02 13:08:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 13:08:51,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 13:08:51,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:08:51,968 INFO L225 Difference]: With dead ends: 1204 [2021-11-02 13:08:51,968 INFO L226 Difference]: Without dead ends: 1032 [2021-11-02 13:08:51,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 618.60ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:08:51,969 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1091 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6824.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.29ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7313.48ms IncrementalHoareTripleChecker+Time [2021-11-02 13:08:51,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 0 Invalid, 1782 Unknown, 0 Unchecked, 16.29ms Time], IncrementalHoareTripleChecker [18 Valid, 1763 Invalid, 1 Unknown, 0 Unchecked, 7313.48ms Time] [2021-11-02 13:08:51,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-11-02 13:08:51,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 645. [2021-11-02 13:08:51,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 636 states have (on average 1.1588050314465408) internal successors, (737), 644 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 737 transitions. [2021-11-02 13:08:51,987 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 737 transitions. Word has length 74 [2021-11-02 13:08:51,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:08:51,988 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 737 transitions. [2021-11-02 13:08:51,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 737 transitions. [2021-11-02 13:08:51,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 13:08:51,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:08:51,989 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] [2021-11-02 13:08:51,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 13:08:51,989 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:08:51,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:08:51,990 INFO L85 PathProgramCache]: Analyzing trace with hash -894538693, now seen corresponding path program 1 times [2021-11-02 13:08:51,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:08:51,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57180425] [2021-11-02 13:08:51,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:08:51,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:08:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:08:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:08:52,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:08:52,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57180425] [2021-11-02 13:08:52,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57180425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:08:52,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:08:52,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:08:52,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991945175] [2021-11-02 13:08:52,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:08:52,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:08:52,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:08:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:08:52,692 INFO L87 Difference]: Start difference. First operand 645 states and 737 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:08:54,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:09:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:00,859 INFO L93 Difference]: Finished difference Result 884 states and 1006 transitions. [2021-11-02 13:09:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 13:09:00,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 13:09:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:00,862 INFO L225 Difference]: With dead ends: 884 [2021-11-02 13:09:00,862 INFO L226 Difference]: Without dead ends: 882 [2021-11-02 13:09:00,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 637.47ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:09:00,863 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 888 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7271.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.71ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7737.86ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:00,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 0 Invalid, 1831 Unknown, 0 Unchecked, 17.71ms Time], IncrementalHoareTripleChecker [13 Valid, 1817 Invalid, 1 Unknown, 0 Unchecked, 7737.86ms Time] [2021-11-02 13:09:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-11-02 13:09:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 673. [2021-11-02 13:09:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 664 states have (on average 1.1596385542168675) internal successors, (770), 672 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 770 transitions. [2021-11-02 13:09:00,907 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 770 transitions. Word has length 75 [2021-11-02 13:09:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:00,907 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 770 transitions. [2021-11-02 13:09:00,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 770 transitions. [2021-11-02 13:09:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 13:09:00,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:00,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:09:00,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 13:09:00,909 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:09:00,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:00,910 INFO L85 PathProgramCache]: Analyzing trace with hash -723476626, now seen corresponding path program 1 times [2021-11-02 13:09:00,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:00,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310556518] [2021-11-02 13:09:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:00,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:09:01,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:01,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310556518] [2021-11-02 13:09:01,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310556518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:01,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:01,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:09:01,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231206830] [2021-11-02 13:09:01,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:09:01,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:01,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:09:01,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:09:01,374 INFO L87 Difference]: Start difference. First operand 673 states and 770 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:03,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:09:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:09,059 INFO L93 Difference]: Finished difference Result 991 states and 1127 transitions. [2021-11-02 13:09:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 13:09:09,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 13:09:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:09,061 INFO L225 Difference]: With dead ends: 991 [2021-11-02 13:09:09,061 INFO L226 Difference]: Without dead ends: 774 [2021-11-02 13:09:09,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 620.90ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:09:09,062 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 448 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6742.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.83ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7163.95ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:09,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 0 Invalid, 1860 Unknown, 0 Unchecked, 14.83ms Time], IncrementalHoareTripleChecker [29 Valid, 1830 Invalid, 1 Unknown, 0 Unchecked, 7163.95ms Time] [2021-11-02 13:09:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-02 13:09:09,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 696. [2021-11-02 13:09:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 687 states have (on average 1.1601164483260553) internal successors, (797), 695 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 797 transitions. [2021-11-02 13:09:09,082 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 797 transitions. Word has length 75 [2021-11-02 13:09:09,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:09,082 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 797 transitions. [2021-11-02 13:09:09,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:09,083 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 797 transitions. [2021-11-02 13:09:09,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 13:09:09,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:09,084 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] [2021-11-02 13:09:09,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 13:09:09,084 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:09:09,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash -682364274, now seen corresponding path program 1 times [2021-11-02 13:09:09,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:09,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659025600] [2021-11-02 13:09:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:09,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:09:12,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:12,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659025600] [2021-11-02 13:09:12,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659025600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:12,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:12,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 13:09:12,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430989506] [2021-11-02 13:09:12,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 13:09:12,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:12,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 13:09:12,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:09:12,088 INFO L87 Difference]: Start difference. First operand 696 states and 797 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:14,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:09:35,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:35,522 INFO L93 Difference]: Finished difference Result 1615 states and 1818 transitions. [2021-11-02 13:09:35,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 13:09:35,523 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 13:09:35,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:35,526 INFO L225 Difference]: With dead ends: 1615 [2021-11-02 13:09:35,526 INFO L226 Difference]: Without dead ends: 1429 [2021-11-02 13:09:35,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3290.72ms TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 13:09:35,527 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1930 mSDsluCounter, 4253 mSDsCounter, 0 mSdLazyCounter, 6464 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19711.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.75ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 6464 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20736.52ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:35,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1930 Valid, 0 Invalid, 6522 Unknown, 0 Unchecked, 62.75ms Time], IncrementalHoareTripleChecker [57 Valid, 6464 Invalid, 1 Unknown, 0 Unchecked, 20736.52ms Time] [2021-11-02 13:09:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2021-11-02 13:09:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 712. [2021-11-02 13:09:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 703 states have (on average 1.159317211948791) internal successors, (815), 711 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 815 transitions. [2021-11-02 13:09:35,549 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 815 transitions. Word has length 75 [2021-11-02 13:09:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:35,549 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 815 transitions. [2021-11-02 13:09:35,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 815 transitions. [2021-11-02 13:09:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 13:09:35,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:35,551 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] [2021-11-02 13:09:35,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 13:09:35,551 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:09:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:35,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1279210384, now seen corresponding path program 1 times [2021-11-02 13:09:35,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:35,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92915438] [2021-11-02 13:09:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:35,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:09:35,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:35,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92915438] [2021-11-02 13:09:35,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92915438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:35,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:35,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:09:35,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961689122] [2021-11-02 13:09:35,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:09:35,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:35,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:09:35,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:09:35,705 INFO L87 Difference]: Start difference. First operand 712 states and 815 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:37,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:09:39,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:39,956 INFO L93 Difference]: Finished difference Result 1353 states and 1552 transitions. [2021-11-02 13:09:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:09:39,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 13:09:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:39,958 INFO L225 Difference]: With dead ends: 1353 [2021-11-02 13:09:39,958 INFO L226 Difference]: Without dead ends: 731 [2021-11-02 13:09:39,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.02ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:09:39,959 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3882.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.77ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4175.62ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:39,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 707 Unknown, 0 Unchecked, 3.77ms Time], IncrementalHoareTripleChecker [25 Valid, 681 Invalid, 1 Unknown, 0 Unchecked, 4175.62ms Time] [2021-11-02 13:09:39,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-11-02 13:09:39,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 665. [2021-11-02 13:09:39,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 656 states have (on average 1.146341463414634) internal successors, (752), 664 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 752 transitions. [2021-11-02 13:09:39,978 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 752 transitions. Word has length 75 [2021-11-02 13:09:39,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:39,979 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 752 transitions. [2021-11-02 13:09:39,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:39,979 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 752 transitions. [2021-11-02 13:09:39,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 13:09:39,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:39,980 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] [2021-11-02 13:09:39,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 13:09:39,981 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:09:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:39,981 INFO L85 PathProgramCache]: Analyzing trace with hash 778478806, now seen corresponding path program 1 times [2021-11-02 13:09:39,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:39,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555849027] [2021-11-02 13:09:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:39,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:09:40,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:40,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555849027] [2021-11-02 13:09:40,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555849027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:40,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:40,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:09:40,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54872992] [2021-11-02 13:09:40,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:09:40,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:40,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:09:40,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:09:40,595 INFO L87 Difference]: Start difference. First operand 665 states and 752 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:42,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:09:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:50,050 INFO L93 Difference]: Finished difference Result 1287 states and 1433 transitions. [2021-11-02 13:09:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 13:09:50,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-02 13:09:50,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:50,053 INFO L225 Difference]: With dead ends: 1287 [2021-11-02 13:09:50,053 INFO L226 Difference]: Without dead ends: 1071 [2021-11-02 13:09:50,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 799.72ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-11-02 13:09:50,054 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1391 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8293.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.02ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8789.55ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:50,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 0 Invalid, 2414 Unknown, 0 Unchecked, 22.02ms Time], IncrementalHoareTripleChecker [53 Valid, 2360 Invalid, 1 Unknown, 0 Unchecked, 8789.55ms Time] [2021-11-02 13:09:50,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-11-02 13:09:50,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 678. [2021-11-02 13:09:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 669 states have (on average 1.1420029895366217) internal successors, (764), 677 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 764 transitions. [2021-11-02 13:09:50,075 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 764 transitions. Word has length 76 [2021-11-02 13:09:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:50,076 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 764 transitions. [2021-11-02 13:09:50,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 764 transitions. [2021-11-02 13:09:50,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 13:09:50,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:50,077 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] [2021-11-02 13:09:50,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 13:09:50,077 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:09:50,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1923291554, now seen corresponding path program 1 times [2021-11-02 13:09:50,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:50,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556505698] [2021-11-02 13:09:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:50,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:09:50,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:50,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556505698] [2021-11-02 13:09:50,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556505698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:50,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:50,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:09:50,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074020347] [2021-11-02 13:09:50,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:09:50,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:50,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:09:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:09:50,341 INFO L87 Difference]: Start difference. First operand 678 states and 764 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:52,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:09:55,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:55,613 INFO L93 Difference]: Finished difference Result 962 states and 1073 transitions. [2021-11-02 13:09:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:09:55,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-02 13:09:55,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:55,616 INFO L225 Difference]: With dead ends: 962 [2021-11-02 13:09:55,616 INFO L226 Difference]: Without dead ends: 751 [2021-11-02 13:09:55,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 228.85ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:09:55,616 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 473 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4751.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.86ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5075.40ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:55,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 0 Invalid, 1060 Unknown, 0 Unchecked, 7.86ms Time], IncrementalHoareTripleChecker [13 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 5075.40ms Time] [2021-11-02 13:09:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-11-02 13:09:55,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 678. [2021-11-02 13:09:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 669 states have (on average 1.1390134529147982) internal successors, (762), 677 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:55,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 762 transitions. [2021-11-02 13:09:55,636 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 762 transitions. Word has length 76 [2021-11-02 13:09:55,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:55,636 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 762 transitions. [2021-11-02 13:09:55,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:55,636 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 762 transitions. [2021-11-02 13:09:55,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 13:09:55,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:55,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:09:55,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 13:09:55,638 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:09:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:55,638 INFO L85 PathProgramCache]: Analyzing trace with hash -770955337, now seen corresponding path program 1 times [2021-11-02 13:09:55,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:55,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234940197] [2021-11-02 13:09:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:55,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:09:57,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:57,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234940197] [2021-11-02 13:09:57,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234940197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:57,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:57,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 13:09:57,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548337111] [2021-11-02 13:09:57,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 13:09:57,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:57,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 13:09:57,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:09:57,457 INFO L87 Difference]: Start difference. First operand 678 states and 762 transitions. Second operand has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:09:59,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:10:29,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:10:29,793 INFO L93 Difference]: Finished difference Result 1936 states and 2142 transitions. [2021-11-02 13:10:29,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-02 13:10:29,793 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 13:10:29,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:10:29,797 INFO L225 Difference]: With dead ends: 1936 [2021-11-02 13:10:29,797 INFO L226 Difference]: Without dead ends: 1795 [2021-11-02 13:10:29,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 8359.12ms TimeCoverageRelationStatistics Valid=619, Invalid=2461, Unknown=0, NotChecked=0, Total=3080 [2021-11-02 13:10:29,799 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2857 mSDsluCounter, 4729 mSDsCounter, 0 mSdLazyCounter, 7700 mSolverCounterSat, 118 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23323.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.65ms SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 7700 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24610.48ms IncrementalHoareTripleChecker+Time [2021-11-02 13:10:29,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2857 Valid, 0 Invalid, 7819 Unknown, 0 Unchecked, 79.65ms Time], IncrementalHoareTripleChecker [118 Valid, 7700 Invalid, 1 Unknown, 0 Unchecked, 24610.48ms Time] [2021-11-02 13:10:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2021-11-02 13:10:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 731. [2021-11-02 13:10:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 722 states have (on average 1.1301939058171746) internal successors, (816), 730 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:10:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 816 transitions. [2021-11-02 13:10:29,825 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 816 transitions. Word has length 77 [2021-11-02 13:10:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:10:29,825 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 816 transitions. [2021-11-02 13:10:29,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:10:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 816 transitions. [2021-11-02 13:10:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 13:10:29,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:10:29,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:10:29,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 13:10:29,827 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:10:29,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:10:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1939395459, now seen corresponding path program 1 times [2021-11-02 13:10:29,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:10:29,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109070077] [2021-11-02 13:10:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:10:29,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:10:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:10:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:10:30,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:10:30,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109070077] [2021-11-02 13:10:30,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109070077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:10:30,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:10:30,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 13:10:30,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894042717] [2021-11-02 13:10:30,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 13:10:30,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:10:30,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 13:10:30,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:10:30,839 INFO L87 Difference]: Start difference. First operand 731 states and 816 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:10:32,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:10:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:10:47,451 INFO L93 Difference]: Finished difference Result 1196 states and 1308 transitions. [2021-11-02 13:10:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 13:10:47,451 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 13:10:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:10:47,454 INFO L225 Difference]: With dead ends: 1196 [2021-11-02 13:10:47,454 INFO L226 Difference]: Without dead ends: 995 [2021-11-02 13:10:47,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2608.34ms TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2021-11-02 13:10:47,455 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 783 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 4484 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13636.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.47ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4484 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14322.98ms IncrementalHoareTripleChecker+Time [2021-11-02 13:10:47,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 0 Invalid, 4527 Unknown, 0 Unchecked, 38.47ms Time], IncrementalHoareTripleChecker [42 Valid, 4484 Invalid, 1 Unknown, 0 Unchecked, 14322.98ms Time] [2021-11-02 13:10:47,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2021-11-02 13:10:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 729. [2021-11-02 13:10:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 720 states have (on average 1.1291666666666667) internal successors, (813), 728 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:10:47,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 813 transitions. [2021-11-02 13:10:47,479 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 813 transitions. Word has length 77 [2021-11-02 13:10:47,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:10:47,480 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 813 transitions. [2021-11-02 13:10:47,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:10:47,480 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 813 transitions. [2021-11-02 13:10:47,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 13:10:47,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:10:47,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:10:47,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 13:10:47,481 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:10:47,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:10:47,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1194809907, now seen corresponding path program 1 times [2021-11-02 13:10:47,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:10:47,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132475217] [2021-11-02 13:10:47,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:10:47,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:10:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:10:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:10:47,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:10:47,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132475217] [2021-11-02 13:10:47,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132475217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:10:47,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:10:47,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:10:47,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455632386] [2021-11-02 13:10:47,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:10:47,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:10:47,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:10:47,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:10:47,758 INFO L87 Difference]: Start difference. First operand 729 states and 813 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:10:49,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:10:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:10:52,675 INFO L93 Difference]: Finished difference Result 780 states and 865 transitions. [2021-11-02 13:10:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:10:52,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-02 13:10:52,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:10:52,677 INFO L225 Difference]: With dead ends: 780 [2021-11-02 13:10:52,677 INFO L226 Difference]: Without dead ends: 768 [2021-11-02 13:10:52,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 190.78ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:10:52,678 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 251 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4437.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.16ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4757.02ms IncrementalHoareTripleChecker+Time [2021-11-02 13:10:52,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 0 Invalid, 950 Unknown, 0 Unchecked, 7.16ms Time], IncrementalHoareTripleChecker [16 Valid, 933 Invalid, 1 Unknown, 0 Unchecked, 4757.02ms Time] [2021-11-02 13:10:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-11-02 13:10:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 756. [2021-11-02 13:10:52,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 747 states have (on average 1.1298527443105757) internal successors, (844), 755 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:10:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 844 transitions. [2021-11-02 13:10:52,700 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 844 transitions. Word has length 78 [2021-11-02 13:10:52,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:10:52,700 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 844 transitions. [2021-11-02 13:10:52,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:10:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 844 transitions. [2021-11-02 13:10:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 13:10:52,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:10:52,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:10:52,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 13:10:52,702 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:10:52,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:10:52,702 INFO L85 PathProgramCache]: Analyzing trace with hash -592034527, now seen corresponding path program 1 times [2021-11-02 13:10:52,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:10:52,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184954089] [2021-11-02 13:10:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:10:52,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:10:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:10:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:10:53,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:10:53,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184954089] [2021-11-02 13:10:53,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184954089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:10:53,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:10:53,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 13:10:53,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349252902] [2021-11-02 13:10:53,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 13:10:53,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:10:53,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 13:10:53,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:10:53,771 INFO L87 Difference]: Start difference. First operand 756 states and 844 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:10:55,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:11:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:11:11,922 INFO L93 Difference]: Finished difference Result 1377 states and 1520 transitions. [2021-11-02 13:11:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 13:11:11,922 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-02 13:11:11,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:11:11,925 INFO L225 Difference]: With dead ends: 1377 [2021-11-02 13:11:11,925 INFO L226 Difference]: Without dead ends: 1164 [2021-11-02 13:11:11,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2404.89ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-11-02 13:11:11,926 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1277 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 5066 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15184.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.56ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 5066 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16033.64ms IncrementalHoareTripleChecker+Time [2021-11-02 13:11:11,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 0 Invalid, 5109 Unknown, 0 Unchecked, 50.56ms Time], IncrementalHoareTripleChecker [42 Valid, 5066 Invalid, 1 Unknown, 0 Unchecked, 16033.64ms Time] [2021-11-02 13:11:11,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2021-11-02 13:11:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 703. [2021-11-02 13:11:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 694 states have (on average 1.1368876080691643) internal successors, (789), 702 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 789 transitions. [2021-11-02 13:11:11,951 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 789 transitions. Word has length 78 [2021-11-02 13:11:11,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:11:11,951 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 789 transitions. [2021-11-02 13:11:11,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:11,951 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 789 transitions. [2021-11-02 13:11:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 13:11:11,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:11:11,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:11:11,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 13:11:11,952 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:11:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:11:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash 116390744, now seen corresponding path program 1 times [2021-11-02 13:11:11,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:11:11,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354387929] [2021-11-02 13:11:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:11:11,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:11:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:11:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:11:12,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:11:12,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354387929] [2021-11-02 13:11:12,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354387929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:11:12,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:11:12,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:11:12,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563165097] [2021-11-02 13:11:12,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:11:12,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:11:12,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:11:12,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:11:12,391 INFO L87 Difference]: Start difference. First operand 703 states and 789 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:14,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:11:21,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:11:21,007 INFO L93 Difference]: Finished difference Result 1134 states and 1281 transitions. [2021-11-02 13:11:21,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 13:11:21,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-02 13:11:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:11:21,010 INFO L225 Difference]: With dead ends: 1134 [2021-11-02 13:11:21,010 INFO L226 Difference]: Without dead ends: 940 [2021-11-02 13:11:21,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 741.36ms TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-02 13:11:21,011 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 524 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7499.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.17ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7987.67ms IncrementalHoareTripleChecker+Time [2021-11-02 13:11:21,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 0 Invalid, 2024 Unknown, 0 Unchecked, 18.17ms Time], IncrementalHoareTripleChecker [29 Valid, 1994 Invalid, 1 Unknown, 0 Unchecked, 7987.67ms Time] [2021-11-02 13:11:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-11-02 13:11:21,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 705. [2021-11-02 13:11:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 696 states have (on average 1.1379310344827587) internal successors, (792), 704 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 792 transitions. [2021-11-02 13:11:21,036 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 792 transitions. Word has length 79 [2021-11-02 13:11:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:11:21,036 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 792 transitions. [2021-11-02 13:11:21,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 792 transitions. [2021-11-02 13:11:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 13:11:21,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:11:21,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:11:21,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 13:11:21,037 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:11:21,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:11:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1987620277, now seen corresponding path program 1 times [2021-11-02 13:11:21,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:11:21,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394125427] [2021-11-02 13:11:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:11:21,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:11:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:11:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:11:21,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:11:21,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394125427] [2021-11-02 13:11:21,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394125427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:11:21,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:11:21,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:11:21,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312068352] [2021-11-02 13:11:21,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:11:21,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:11:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:11:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:11:21,333 INFO L87 Difference]: Start difference. First operand 705 states and 792 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:23,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:11:26,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:11:26,860 INFO L93 Difference]: Finished difference Result 760 states and 843 transitions. [2021-11-02 13:11:26,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 13:11:26,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-02 13:11:26,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:11:26,862 INFO L225 Difference]: With dead ends: 760 [2021-11-02 13:11:26,862 INFO L226 Difference]: Without dead ends: 694 [2021-11-02 13:11:26,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 374.85ms TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:11:26,863 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 485 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4833.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.41ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5189.17ms IncrementalHoareTripleChecker+Time [2021-11-02 13:11:26,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 0 Invalid, 1020 Unknown, 0 Unchecked, 9.41ms Time], IncrementalHoareTripleChecker [22 Valid, 997 Invalid, 1 Unknown, 0 Unchecked, 5189.17ms Time] [2021-11-02 13:11:26,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-11-02 13:11:26,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 681. [2021-11-02 13:11:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 672 states have (on average 1.1398809523809523) internal successors, (766), 680 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 766 transitions. [2021-11-02 13:11:26,889 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 766 transitions. Word has length 80 [2021-11-02 13:11:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:11:26,889 INFO L470 AbstractCegarLoop]: Abstraction has 681 states and 766 transitions. [2021-11-02 13:11:26,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 766 transitions. [2021-11-02 13:11:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 13:11:26,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:11:26,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:11:26,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 13:11:26,890 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:11:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:11:26,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1448030890, now seen corresponding path program 1 times [2021-11-02 13:11:26,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:11:26,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111301519] [2021-11-02 13:11:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:11:26,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:11:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:11:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:11:28,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:11:28,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111301519] [2021-11-02 13:11:28,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111301519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:11:28,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:11:28,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 13:11:28,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385005320] [2021-11-02 13:11:28,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 13:11:28,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:11:28,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 13:11:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:11:28,484 INFO L87 Difference]: Start difference. First operand 681 states and 766 transitions. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:30,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:11:40,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:11:40,933 INFO L93 Difference]: Finished difference Result 1352 states and 1529 transitions. [2021-11-02 13:11:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 13:11:40,933 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-02 13:11:40,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:11:40,936 INFO L225 Difference]: With dead ends: 1352 [2021-11-02 13:11:40,936 INFO L226 Difference]: Without dead ends: 1194 [2021-11-02 13:11:40,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2057.87ms TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2021-11-02 13:11:40,937 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1179 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10480.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.50ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11072.61ms IncrementalHoareTripleChecker+Time [2021-11-02 13:11:40,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 0 Invalid, 3643 Unknown, 0 Unchecked, 28.50ms Time], IncrementalHoareTripleChecker [63 Valid, 3579 Invalid, 1 Unknown, 0 Unchecked, 11072.61ms Time] [2021-11-02 13:11:40,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-11-02 13:11:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 734. [2021-11-02 13:11:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 725 states have (on average 1.1310344827586207) internal successors, (820), 733 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 820 transitions. [2021-11-02 13:11:40,963 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 820 transitions. Word has length 80 [2021-11-02 13:11:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:11:40,963 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 820 transitions. [2021-11-02 13:11:40,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 820 transitions. [2021-11-02 13:11:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 13:11:40,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:11:40,964 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] [2021-11-02 13:11:40,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 13:11:40,964 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:11:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:11:40,965 INFO L85 PathProgramCache]: Analyzing trace with hash -106540190, now seen corresponding path program 1 times [2021-11-02 13:11:40,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:11:40,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072256289] [2021-11-02 13:11:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:11:40,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:11:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:11:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:11:45,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:11:45,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072256289] [2021-11-02 13:11:45,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072256289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:11:45,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:11:45,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 13:11:45,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462195333] [2021-11-02 13:11:45,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 13:11:45,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:11:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 13:11:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-11-02 13:11:45,716 INFO L87 Difference]: Start difference. First operand 734 states and 820 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 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) [2021-11-02 13:11:47,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:12:00,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:00,993 INFO L93 Difference]: Finished difference Result 1015 states and 1134 transitions. [2021-11-02 13:12:00,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 13:12:00,994 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 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 [2021-11-02 13:12:00,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:00,996 INFO L225 Difference]: With dead ends: 1015 [2021-11-02 13:12:00,996 INFO L226 Difference]: Without dead ends: 916 [2021-11-02 13:12:00,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 3288.37ms TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 13:12:00,997 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1701 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 99 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12132.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.32ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3850 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12707.18ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:00,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1701 Valid, 0 Invalid, 3950 Unknown, 0 Unchecked, 39.32ms Time], IncrementalHoareTripleChecker [99 Valid, 3850 Invalid, 1 Unknown, 0 Unchecked, 12707.18ms Time] [2021-11-02 13:12:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-11-02 13:12:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 846. [2021-11-02 13:12:01,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 837 states have (on average 1.1397849462365592) internal successors, (954), 845 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 954 transitions. [2021-11-02 13:12:01,029 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 954 transitions. Word has length 81 [2021-11-02 13:12:01,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:01,030 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 954 transitions. [2021-11-02 13:12:01,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 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) [2021-11-02 13:12:01,030 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 954 transitions. [2021-11-02 13:12:01,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 13:12:01,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:01,030 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] [2021-11-02 13:12:01,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 13:12:01,031 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:12:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:01,031 INFO L85 PathProgramCache]: Analyzing trace with hash 573518180, now seen corresponding path program 1 times [2021-11-02 13:12:01,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:01,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458559877] [2021-11-02 13:12:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:01,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:12:01,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:01,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458559877] [2021-11-02 13:12:01,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458559877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:01,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:01,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:12:01,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20415744] [2021-11-02 13:12:01,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:12:01,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:12:01,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:12:01,431 INFO L87 Difference]: Start difference. First operand 846 states and 954 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2021-11-02 13:12:03,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:12:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:07,276 INFO L93 Difference]: Finished difference Result 1109 states and 1261 transitions. [2021-11-02 13:12:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:12:07,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 [2021-11-02 13:12:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:07,279 INFO L225 Difference]: With dead ends: 1109 [2021-11-02 13:12:07,279 INFO L226 Difference]: Without dead ends: 850 [2021-11-02 13:12:07,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 216.74ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:12:07,280 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 206 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5365.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.44ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5726.00ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:07,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 0 Invalid, 1323 Unknown, 0 Unchecked, 9.44ms Time], IncrementalHoareTripleChecker [12 Valid, 1310 Invalid, 1 Unknown, 0 Unchecked, 5726.00ms Time] [2021-11-02 13:12:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-11-02 13:12:07,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 838. [2021-11-02 13:12:07,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 829 states have (on average 1.1363088057901085) internal successors, (942), 837 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 942 transitions. [2021-11-02 13:12:07,325 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 942 transitions. Word has length 81 [2021-11-02 13:12:07,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:07,325 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 942 transitions. [2021-11-02 13:12:07,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2021-11-02 13:12:07,325 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 942 transitions. [2021-11-02 13:12:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 13:12:07,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:07,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:12:07,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-02 13:12:07,326 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:12:07,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1253120851, now seen corresponding path program 1 times [2021-11-02 13:12:07,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:07,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200684347] [2021-11-02 13:12:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:07,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:12:08,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:08,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200684347] [2021-11-02 13:12:08,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200684347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:08,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:08,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 13:12:08,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432764856] [2021-11-02 13:12:08,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 13:12:08,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:08,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 13:12:08,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:12:08,167 INFO L87 Difference]: Start difference. First operand 838 states and 942 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:10,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:12:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:21,132 INFO L93 Difference]: Finished difference Result 1318 states and 1477 transitions. [2021-11-02 13:12:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 13:12:21,132 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 13:12:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:21,135 INFO L225 Difference]: With dead ends: 1318 [2021-11-02 13:12:21,135 INFO L226 Difference]: Without dead ends: 1126 [2021-11-02 13:12:21,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2091.79ms TimeCoverageRelationStatistics Valid=278, Invalid=778, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 13:12:21,136 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1020 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 3096 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10545.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.51ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11161.43ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:21,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 0 Invalid, 3163 Unknown, 0 Unchecked, 29.51ms Time], IncrementalHoareTripleChecker [66 Valid, 3096 Invalid, 1 Unknown, 0 Unchecked, 11161.43ms Time] [2021-11-02 13:12:21,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-11-02 13:12:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 844. [2021-11-02 13:12:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 835 states have (on average 1.1353293413173653) internal successors, (948), 843 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 948 transitions. [2021-11-02 13:12:21,170 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 948 transitions. Word has length 82 [2021-11-02 13:12:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:21,170 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 948 transitions. [2021-11-02 13:12:21,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:21,170 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 948 transitions. [2021-11-02 13:12:21,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 13:12:21,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:21,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:12:21,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 13:12:21,171 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:12:21,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1933735067, now seen corresponding path program 1 times [2021-11-02 13:12:21,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:21,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609952516] [2021-11-02 13:12:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:21,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:12:21,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:21,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609952516] [2021-11-02 13:12:21,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609952516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:21,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:21,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:12:21,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852059967] [2021-11-02 13:12:21,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:12:21,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:21,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:12:21,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:12:21,686 INFO L87 Difference]: Start difference. First operand 844 states and 948 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:23,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:12:31,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:31,972 INFO L93 Difference]: Finished difference Result 1809 states and 2065 transitions. [2021-11-02 13:12:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 13:12:31,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 13:12:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:31,975 INFO L225 Difference]: With dead ends: 1809 [2021-11-02 13:12:31,975 INFO L226 Difference]: Without dead ends: 1633 [2021-11-02 13:12:31,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1756.20ms TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 13:12:31,976 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 911 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8100.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.79ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8594.69ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:31,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 0 Invalid, 2217 Unknown, 0 Unchecked, 21.79ms Time], IncrementalHoareTripleChecker [37 Valid, 2179 Invalid, 1 Unknown, 0 Unchecked, 8594.69ms Time] [2021-11-02 13:12:31,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2021-11-02 13:12:32,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 788. [2021-11-02 13:12:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 779 states have (on average 1.1322207958921695) internal successors, (882), 787 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 882 transitions. [2021-11-02 13:12:32,011 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 882 transitions. Word has length 82 [2021-11-02 13:12:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:32,011 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 882 transitions. [2021-11-02 13:12:32,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:32,011 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 882 transitions. [2021-11-02 13:12:32,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 13:12:32,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:32,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:12:32,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 13:12:32,012 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:12:32,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash 62704963, now seen corresponding path program 1 times [2021-11-02 13:12:32,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:32,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008168941] [2021-11-02 13:12:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:32,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:12:34,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:34,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008168941] [2021-11-02 13:12:34,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008168941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:34,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:34,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 13:12:34,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619179529] [2021-11-02 13:12:34,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 13:12:34,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 13:12:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:12:34,355 INFO L87 Difference]: Start difference. First operand 788 states and 882 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:36,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:12:47,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:47,137 INFO L93 Difference]: Finished difference Result 1188 states and 1299 transitions. [2021-11-02 13:12:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 13:12:47,137 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 13:12:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:47,139 INFO L225 Difference]: With dead ends: 1188 [2021-11-02 13:12:47,139 INFO L226 Difference]: Without dead ends: 973 [2021-11-02 13:12:47,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1230.02ms TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2021-11-02 13:12:47,140 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 955 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 3831 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11333.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.81ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3831 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11962.59ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:47,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [955 Valid, 0 Invalid, 3859 Unknown, 0 Unchecked, 31.81ms Time], IncrementalHoareTripleChecker [27 Valid, 3831 Invalid, 1 Unknown, 0 Unchecked, 11962.59ms Time] [2021-11-02 13:12:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-11-02 13:12:47,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 747. [2021-11-02 13:12:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 738 states have (on average 1.1260162601626016) internal successors, (831), 746 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:47,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 831 transitions. [2021-11-02 13:12:47,172 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 831 transitions. Word has length 82 [2021-11-02 13:12:47,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:47,172 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 831 transitions. [2021-11-02 13:12:47,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 831 transitions. [2021-11-02 13:12:47,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 13:12:47,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:47,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:12:47,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-02 13:12:47,174 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:12:47,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:47,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1001840699, now seen corresponding path program 1 times [2021-11-02 13:12:47,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:47,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444985062] [2021-11-02 13:12:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:47,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:12:47,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:47,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444985062] [2021-11-02 13:12:47,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444985062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:47,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:47,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 13:12:47,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765090648] [2021-11-02 13:12:47,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 13:12:47,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 13:12:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:12:47,914 INFO L87 Difference]: Start difference. First operand 747 states and 831 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:49,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:12:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:58,646 INFO L93 Difference]: Finished difference Result 1110 states and 1244 transitions. [2021-11-02 13:12:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 13:12:58,647 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 13:12:58,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:58,648 INFO L225 Difference]: With dead ends: 1110 [2021-11-02 13:12:58,648 INFO L226 Difference]: Without dead ends: 1102 [2021-11-02 13:12:58,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1482.61ms TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2021-11-02 13:12:58,649 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 410 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 2681 mSolverCounterSat, 216 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8987.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.64ms SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2681 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9454.89ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:58,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 0 Invalid, 2898 Unknown, 0 Unchecked, 21.64ms Time], IncrementalHoareTripleChecker [216 Valid, 2681 Invalid, 1 Unknown, 0 Unchecked, 9454.89ms Time] [2021-11-02 13:12:58,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-02 13:12:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 779. [2021-11-02 13:12:58,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 770 states have (on average 1.1194805194805195) internal successors, (862), 778 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 862 transitions. [2021-11-02 13:12:58,688 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 862 transitions. Word has length 83 [2021-11-02 13:12:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:58,688 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 862 transitions. [2021-11-02 13:12:58,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 862 transitions. [2021-11-02 13:12:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 13:12:58,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:58,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:12:58,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-02 13:12:58,689 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:12:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1195031587, now seen corresponding path program 1 times [2021-11-02 13:12:58,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:58,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876110154] [2021-11-02 13:12:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:58,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:12:59,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:59,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876110154] [2021-11-02 13:12:59,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876110154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:59,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:59,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:12:59,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409681237] [2021-11-02 13:12:59,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:12:59,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:59,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:12:59,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:12:59,120 INFO L87 Difference]: Start difference. First operand 779 states and 862 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:01,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:07,805 INFO L93 Difference]: Finished difference Result 1122 states and 1243 transitions. [2021-11-02 13:13:07,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 13:13:07,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 13:13:07,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:07,807 INFO L225 Difference]: With dead ends: 1122 [2021-11-02 13:13:07,807 INFO L226 Difference]: Without dead ends: 1078 [2021-11-02 13:13:07,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 988.06ms TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-11-02 13:13:07,808 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 557 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7383.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.05ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7775.77ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:07,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 0 Invalid, 1961 Unknown, 0 Unchecked, 18.05ms Time], IncrementalHoareTripleChecker [27 Valid, 1933 Invalid, 1 Unknown, 0 Unchecked, 7775.77ms Time] [2021-11-02 13:13:07,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-11-02 13:13:07,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 740. [2021-11-02 13:13:07,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 731 states have (on average 1.121751025991792) internal successors, (820), 739 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 820 transitions. [2021-11-02 13:13:07,842 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 820 transitions. Word has length 83 [2021-11-02 13:13:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:07,843 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 820 transitions. [2021-11-02 13:13:07,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 820 transitions. [2021-11-02 13:13:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 13:13:07,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:07,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:13:07,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-02 13:13:07,844 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:13:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1547107831, now seen corresponding path program 1 times [2021-11-02 13:13:07,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:07,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779267709] [2021-11-02 13:13:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:07,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:13:08,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:08,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779267709] [2021-11-02 13:13:08,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779267709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:13:08,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:13:08,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 13:13:08,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013303665] [2021-11-02 13:13:08,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 13:13:08,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 13:13:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:13:08,447 INFO L87 Difference]: Start difference. First operand 740 states and 820 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:10,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:17,802 INFO L93 Difference]: Finished difference Result 1118 states and 1211 transitions. [2021-11-02 13:13:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 13:13:17,802 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 13:13:17,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:17,804 INFO L225 Difference]: With dead ends: 1118 [2021-11-02 13:13:17,804 INFO L226 Difference]: Without dead ends: 969 [2021-11-02 13:13:17,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1276.02ms TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2021-11-02 13:13:17,805 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1334 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7747.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.03ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8236.35ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:17,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 0 Invalid, 1969 Unknown, 0 Unchecked, 21.03ms Time], IncrementalHoareTripleChecker [67 Valid, 1901 Invalid, 1 Unknown, 0 Unchecked, 8236.35ms Time] [2021-11-02 13:13:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-02 13:13:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 708. [2021-11-02 13:13:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 699 states have (on average 1.1244635193133048) internal successors, (786), 707 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 786 transitions. [2021-11-02 13:13:17,839 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 786 transitions. Word has length 85 [2021-11-02 13:13:17,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:17,840 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 786 transitions. [2021-11-02 13:13:17,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 786 transitions. [2021-11-02 13:13:17,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 13:13:17,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:17,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:13:17,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-02 13:13:17,841 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:13:17,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:17,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1516959556, now seen corresponding path program 1 times [2021-11-02 13:13:17,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:17,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685426139] [2021-11-02 13:13:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:17,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:13:21,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:21,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685426139] [2021-11-02 13:13:21,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685426139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:13:21,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:13:21,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 13:13:21,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789400978] [2021-11-02 13:13:21,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 13:13:21,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 13:13:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-02 13:13:21,556 INFO L87 Difference]: Start difference. First operand 708 states and 786 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:23,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:39,046 INFO L93 Difference]: Finished difference Result 1256 states and 1380 transitions. [2021-11-02 13:13:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-02 13:13:39,046 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 13:13:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:39,048 INFO L225 Difference]: With dead ends: 1256 [2021-11-02 13:13:39,048 INFO L226 Difference]: Without dead ends: 1087 [2021-11-02 13:13:39,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 4163.41ms TimeCoverageRelationStatistics Valid=451, Invalid=1711, Unknown=0, NotChecked=0, Total=2162 [2021-11-02 13:13:39,049 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2293 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 4318 mSolverCounterSat, 125 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13289.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.08ms SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 4318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14020.60ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:39,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2293 Valid, 0 Invalid, 4444 Unknown, 0 Unchecked, 46.08ms Time], IncrementalHoareTripleChecker [125 Valid, 4318 Invalid, 1 Unknown, 0 Unchecked, 14020.60ms Time] [2021-11-02 13:13:39,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2021-11-02 13:13:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 791. [2021-11-02 13:13:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 782 states have (on average 1.1240409207161126) internal successors, (879), 790 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 879 transitions. [2021-11-02 13:13:39,097 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 879 transitions. Word has length 85 [2021-11-02 13:13:39,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:39,097 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 879 transitions. [2021-11-02 13:13:39,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:39,098 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 879 transitions. [2021-11-02 13:13:39,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 13:13:39,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:39,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:13:39,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-02 13:13:39,099 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:13:39,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:39,099 INFO L85 PathProgramCache]: Analyzing trace with hash 434207952, now seen corresponding path program 1 times [2021-11-02 13:13:39,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:39,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30438481] [2021-11-02 13:13:39,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:39,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:13:41,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:41,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30438481] [2021-11-02 13:13:41,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30438481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:13:41,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:13:41,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:13:41,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827569496] [2021-11-02 13:13:41,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:13:41,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:13:41,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:13:41,031 INFO L87 Difference]: Start difference. First operand 791 states and 879 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:43,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:48,994 INFO L93 Difference]: Finished difference Result 1281 states and 1406 transitions. [2021-11-02 13:13:48,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:13:48,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-02 13:13:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:48,995 INFO L225 Difference]: With dead ends: 1281 [2021-11-02 13:13:48,995 INFO L226 Difference]: Without dead ends: 918 [2021-11-02 13:13:48,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 558.03ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:13:48,996 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 711 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7112.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.92ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7573.05ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:48,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 0 Invalid, 1700 Unknown, 0 Unchecked, 15.92ms Time], IncrementalHoareTripleChecker [7 Valid, 1692 Invalid, 1 Unknown, 0 Unchecked, 7573.05ms Time] [2021-11-02 13:13:48,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-11-02 13:13:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 799. [2021-11-02 13:13:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 790 states have (on average 1.1227848101265823) internal successors, (887), 798 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 887 transitions. [2021-11-02 13:13:49,036 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 887 transitions. Word has length 86 [2021-11-02 13:13:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:49,036 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 887 transitions. [2021-11-02 13:13:49,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:49,036 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 887 transitions. [2021-11-02 13:13:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 13:13:49,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:49,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:13:49,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-02 13:13:49,037 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:13:49,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:49,038 INFO L85 PathProgramCache]: Analyzing trace with hash -529928246, now seen corresponding path program 1 times [2021-11-02 13:13:49,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:49,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765134655] [2021-11-02 13:13:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:49,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:13:49,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:49,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765134655] [2021-11-02 13:13:49,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765134655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:13:49,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:13:49,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:13:49,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579682806] [2021-11-02 13:13:49,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:13:49,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:49,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:13:49,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:13:49,510 INFO L87 Difference]: Start difference. First operand 799 states and 887 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:51,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:58,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:58,024 INFO L93 Difference]: Finished difference Result 1865 states and 2105 transitions. [2021-11-02 13:13:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 13:13:58,025 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-02 13:13:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:58,027 INFO L225 Difference]: With dead ends: 1865 [2021-11-02 13:13:58,028 INFO L226 Difference]: Without dead ends: 1791 [2021-11-02 13:13:58,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1179.26ms TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2021-11-02 13:13:58,029 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1182 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6915.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.00ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7366.54ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:58,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 0 Invalid, 1739 Unknown, 0 Unchecked, 18.00ms Time], IncrementalHoareTripleChecker [46 Valid, 1692 Invalid, 1 Unknown, 0 Unchecked, 7366.54ms Time] [2021-11-02 13:13:58,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-11-02 13:13:58,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 799. [2021-11-02 13:13:58,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 790 states have (on average 1.1215189873417721) internal successors, (886), 798 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 886 transitions. [2021-11-02 13:13:58,083 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 886 transitions. Word has length 86 [2021-11-02 13:13:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:58,083 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 886 transitions. [2021-11-02 13:13:58,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:58,083 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 886 transitions. [2021-11-02 13:13:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 13:13:58,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:58,084 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] [2021-11-02 13:13:58,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-02 13:13:58,084 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:13:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:58,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2071448370, now seen corresponding path program 1 times [2021-11-02 13:13:58,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:58,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489840342] [2021-11-02 13:13:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:58,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:13:58,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:58,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489840342] [2021-11-02 13:13:58,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489840342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:13:58,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:13:58,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:13:58,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344756761] [2021-11-02 13:13:58,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:13:58,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:58,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:13:58,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:13:58,798 INFO L87 Difference]: Start difference. First operand 799 states and 886 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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) [2021-11-02 13:14:00,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:05,911 INFO L93 Difference]: Finished difference Result 897 states and 986 transitions. [2021-11-02 13:14:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 13:14:05,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 [2021-11-02 13:14:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:05,913 INFO L225 Difference]: With dead ends: 897 [2021-11-02 13:14:05,913 INFO L226 Difference]: Without dead ends: 895 [2021-11-02 13:14:05,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1139.96ms TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:14:05,913 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 684 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5796.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.73ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6190.71ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:05,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 0 Invalid, 1400 Unknown, 0 Unchecked, 12.73ms Time], IncrementalHoareTripleChecker [46 Valid, 1353 Invalid, 1 Unknown, 0 Unchecked, 6190.71ms Time] [2021-11-02 13:14:05,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-02 13:14:05,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 830. [2021-11-02 13:14:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 821 states have (on average 1.123020706455542) internal successors, (922), 829 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 922 transitions. [2021-11-02 13:14:05,955 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 922 transitions. Word has length 87 [2021-11-02 13:14:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:05,955 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 922 transitions. [2021-11-02 13:14:05,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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) [2021-11-02 13:14:05,956 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 922 transitions. [2021-11-02 13:14:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 13:14:05,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:05,956 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] [2021-11-02 13:14:05,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-02 13:14:05,957 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:14:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1900386303, now seen corresponding path program 1 times [2021-11-02 13:14:05,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:05,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811423912] [2021-11-02 13:14:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:05,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:14:06,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:06,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811423912] [2021-11-02 13:14:06,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811423912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:06,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:06,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:14:06,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201344055] [2021-11-02 13:14:06,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:14:06,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:06,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:14:06,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:14:06,266 INFO L87 Difference]: Start difference. First operand 830 states and 922 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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) [2021-11-02 13:14:08,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:11,824 INFO L93 Difference]: Finished difference Result 1123 states and 1245 transitions. [2021-11-02 13:14:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:14:11,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 [2021-11-02 13:14:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:11,826 INFO L225 Difference]: With dead ends: 1123 [2021-11-02 13:14:11,826 INFO L226 Difference]: Without dead ends: 974 [2021-11-02 13:14:11,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 308.34ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:14:11,827 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 374 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4948.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.14ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5282.87ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:11,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 0 Invalid, 1117 Unknown, 0 Unchecked, 9.14ms Time], IncrementalHoareTripleChecker [30 Valid, 1086 Invalid, 1 Unknown, 0 Unchecked, 5282.87ms Time] [2021-11-02 13:14:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-11-02 13:14:11,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 843. [2021-11-02 13:14:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 834 states have (on average 1.118705035971223) internal successors, (933), 842 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 933 transitions. [2021-11-02 13:14:11,886 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 933 transitions. Word has length 87 [2021-11-02 13:14:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:11,886 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 933 transitions. [2021-11-02 13:14:11,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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) [2021-11-02 13:14:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 933 transitions. [2021-11-02 13:14:11,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 13:14:11,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:11,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:14:11,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-02 13:14:11,888 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:14:11,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:11,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1912145800, now seen corresponding path program 1 times [2021-11-02 13:14:11,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:11,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117573120] [2021-11-02 13:14:11,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:11,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:14:12,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:12,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117573120] [2021-11-02 13:14:12,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117573120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:12,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:12,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:14:12,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425002549] [2021-11-02 13:14:12,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:14:12,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:12,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:14:12,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:14:12,093 INFO L87 Difference]: Start difference. First operand 843 states and 933 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:14,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:17,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:17,864 INFO L93 Difference]: Finished difference Result 1431 states and 1609 transitions. [2021-11-02 13:14:17,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:14:17,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-02 13:14:17,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:17,866 INFO L225 Difference]: With dead ends: 1431 [2021-11-02 13:14:17,866 INFO L226 Difference]: Without dead ends: 1102 [2021-11-02 13:14:17,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 231.38ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:14:17,866 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 294 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5145.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.75ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5490.04ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:17,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 0 Invalid, 1156 Unknown, 0 Unchecked, 9.75ms Time], IncrementalHoareTripleChecker [8 Valid, 1147 Invalid, 1 Unknown, 0 Unchecked, 5490.04ms Time] [2021-11-02 13:14:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-02 13:14:17,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 855. [2021-11-02 13:14:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 846 states have (on average 1.1146572104018913) internal successors, (943), 854 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 943 transitions. [2021-11-02 13:14:17,908 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 943 transitions. Word has length 88 [2021-11-02 13:14:17,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:17,908 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 943 transitions. [2021-11-02 13:14:17,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:17,908 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 943 transitions. [2021-11-02 13:14:17,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 13:14:17,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:17,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:14:17,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-02 13:14:17,909 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:14:17,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:17,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1810270269, now seen corresponding path program 1 times [2021-11-02 13:14:17,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:17,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437153883] [2021-11-02 13:14:17,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:17,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:14:20,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:20,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437153883] [2021-11-02 13:14:20,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437153883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:20,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:20,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 13:14:20,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024729115] [2021-11-02 13:14:20,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 13:14:20,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:20,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 13:14:20,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:14:20,996 INFO L87 Difference]: Start difference. First operand 855 states and 943 transitions. Second operand has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:23,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:35,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:35,958 INFO L93 Difference]: Finished difference Result 1120 states and 1212 transitions. [2021-11-02 13:14:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 13:14:35,958 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-02 13:14:35,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:35,960 INFO L225 Difference]: With dead ends: 1120 [2021-11-02 13:14:35,960 INFO L226 Difference]: Without dead ends: 1021 [2021-11-02 13:14:35,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2343.80ms TimeCoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2021-11-02 13:14:35,961 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 958 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12564.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.77ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13207.40ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:35,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [958 Valid, 0 Invalid, 3988 Unknown, 0 Unchecked, 35.77ms Time], IncrementalHoareTripleChecker [33 Valid, 3954 Invalid, 1 Unknown, 0 Unchecked, 13207.40ms Time] [2021-11-02 13:14:35,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2021-11-02 13:14:36,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 852. [2021-11-02 13:14:36,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 843 states have (on average 1.113879003558719) internal successors, (939), 851 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 939 transitions. [2021-11-02 13:14:36,006 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 939 transitions. Word has length 89 [2021-11-02 13:14:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:36,006 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 939 transitions. [2021-11-02 13:14:36,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 939 transitions. [2021-11-02 13:14:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 13:14:36,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:36,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:14:36,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-02 13:14:36,007 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:14:36,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash -573045769, now seen corresponding path program 1 times [2021-11-02 13:14:36,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:36,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681039234] [2021-11-02 13:14:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:36,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:14:37,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:37,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681039234] [2021-11-02 13:14:37,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681039234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:37,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:37,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 13:14:37,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044553548] [2021-11-02 13:14:37,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 13:14:37,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:37,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 13:14:37,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:14:37,515 INFO L87 Difference]: Start difference. First operand 852 states and 939 transitions. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:39,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:52,558 INFO L93 Difference]: Finished difference Result 1299 states and 1397 transitions. [2021-11-02 13:14:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 13:14:52,558 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 13:14:52,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:52,560 INFO L225 Difference]: With dead ends: 1299 [2021-11-02 13:14:52,560 INFO L226 Difference]: Without dead ends: 1147 [2021-11-02 13:14:52,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 3046.47ms TimeCoverageRelationStatistics Valid=358, Invalid=1048, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 13:14:52,561 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1126 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 3535 mSolverCounterSat, 83 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11874.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.76ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 3535 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12540.56ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:52,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1126 Valid, 0 Invalid, 3619 Unknown, 0 Unchecked, 34.76ms Time], IncrementalHoareTripleChecker [83 Valid, 3535 Invalid, 1 Unknown, 0 Unchecked, 12540.56ms Time] [2021-11-02 13:14:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-11-02 13:14:52,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 860. [2021-11-02 13:14:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 851 states have (on average 1.1128084606345476) internal successors, (947), 859 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 947 transitions. [2021-11-02 13:14:52,606 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 947 transitions. Word has length 91 [2021-11-02 13:14:52,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:52,606 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 947 transitions. [2021-11-02 13:14:52,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 947 transitions. [2021-11-02 13:14:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 13:14:52,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:52,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:14:52,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-02 13:14:52,608 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:14:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 565360802, now seen corresponding path program 1 times [2021-11-02 13:14:52,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:52,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300920851] [2021-11-02 13:14:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:52,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:14:57,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:57,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300920851] [2021-11-02 13:14:57,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300920851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:57,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:57,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 13:14:57,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541629541] [2021-11-02 13:14:57,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 13:14:57,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:57,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 13:14:57,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-02 13:14:57,304 INFO L87 Difference]: Start difference. First operand 860 states and 947 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:59,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:15:20,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:15:20,310 INFO L93 Difference]: Finished difference Result 1722 states and 1899 transitions. [2021-11-02 13:15:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-02 13:15:20,311 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-02 13:15:20,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:15:20,313 INFO L225 Difference]: With dead ends: 1722 [2021-11-02 13:15:20,313 INFO L226 Difference]: Without dead ends: 1509 [2021-11-02 13:15:20,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 3867.35ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-11-02 13:15:20,315 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1445 mSDsluCounter, 3549 mSDsCounter, 0 mSdLazyCounter, 5817 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18658.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.90ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 5817 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19640.74ms IncrementalHoareTripleChecker+Time [2021-11-02 13:15:20,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 0 Invalid, 5875 Unknown, 0 Unchecked, 58.90ms Time], IncrementalHoareTripleChecker [57 Valid, 5817 Invalid, 1 Unknown, 0 Unchecked, 19640.74ms Time] [2021-11-02 13:15:20,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-11-02 13:15:20,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 860. [2021-11-02 13:15:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 851 states have (on average 1.1069330199764982) internal successors, (942), 859 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 942 transitions. [2021-11-02 13:15:20,385 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 942 transitions. Word has length 92 [2021-11-02 13:15:20,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:15:20,385 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 942 transitions. [2021-11-02 13:15:20,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 942 transitions. [2021-11-02 13:15:20,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 13:15:20,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:15:20,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:15:20,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-02 13:15:20,387 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:15:20,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:15:20,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1245419172, now seen corresponding path program 1 times [2021-11-02 13:15:20,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:15:20,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602490859] [2021-11-02 13:15:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:20,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:15:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:15:20,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:15:20,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602490859] [2021-11-02 13:15:20,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602490859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:15:20,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:15:20,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:15:20,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910230912] [2021-11-02 13:15:20,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:15:20,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:15:20,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:15:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:15:20,853 INFO L87 Difference]: Start difference. First operand 860 states and 942 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:23,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:15:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:15:28,483 INFO L93 Difference]: Finished difference Result 1229 states and 1365 transitions. [2021-11-02 13:15:28,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:15:28,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-02 13:15:28,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:15:28,485 INFO L225 Difference]: With dead ends: 1229 [2021-11-02 13:15:28,485 INFO L226 Difference]: Without dead ends: 959 [2021-11-02 13:15:28,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 457.91ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:15:28,486 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 226 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6835.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.55ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7258.70ms IncrementalHoareTripleChecker+Time [2021-11-02 13:15:28,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 0 Invalid, 1586 Unknown, 0 Unchecked, 12.55ms Time], IncrementalHoareTripleChecker [10 Valid, 1575 Invalid, 1 Unknown, 0 Unchecked, 7258.70ms Time] [2021-11-02 13:15:28,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-02 13:15:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 823. [2021-11-02 13:15:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 814 states have (on average 1.0982800982800982) internal successors, (894), 822 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 894 transitions. [2021-11-02 13:15:28,530 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 894 transitions. Word has length 92 [2021-11-02 13:15:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:15:28,530 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 894 transitions. [2021-11-02 13:15:28,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 894 transitions. [2021-11-02 13:15:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 13:15:28,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:15:28,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:15:28,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-02 13:15:28,531 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:15:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:15:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash -839105093, now seen corresponding path program 1 times [2021-11-02 13:15:28,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:15:28,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988112957] [2021-11-02 13:15:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:28,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:15:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:15:28,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:15:28,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988112957] [2021-11-02 13:15:28,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988112957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:15:28,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:15:28,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:15:28,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549065230] [2021-11-02 13:15:28,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:15:28,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:15:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:15:28,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:15:28,890 INFO L87 Difference]: Start difference. First operand 823 states and 894 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:31,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:15:35,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:15:35,725 INFO L93 Difference]: Finished difference Result 1032 states and 1125 transitions. [2021-11-02 13:15:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:15:35,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-02 13:15:35,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:15:35,727 INFO L225 Difference]: With dead ends: 1032 [2021-11-02 13:15:35,727 INFO L226 Difference]: Without dead ends: 839 [2021-11-02 13:15:35,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 439.82ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:15:35,728 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 263 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6067.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.34ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6457.71ms IncrementalHoareTripleChecker+Time [2021-11-02 13:15:35,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 0 Invalid, 1451 Unknown, 0 Unchecked, 11.34ms Time], IncrementalHoareTripleChecker [22 Valid, 1428 Invalid, 1 Unknown, 0 Unchecked, 6457.71ms Time] [2021-11-02 13:15:35,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-02 13:15:35,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 811. [2021-11-02 13:15:35,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 802 states have (on average 1.0947630922693268) internal successors, (878), 810 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 878 transitions. [2021-11-02 13:15:35,789 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 878 transitions. Word has length 92 [2021-11-02 13:15:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:15:35,790 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 878 transitions. [2021-11-02 13:15:35,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:35,790 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 878 transitions. [2021-11-02 13:15:35,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 13:15:35,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:15:35,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:15:35,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-02 13:15:35,791 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:15:35,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:15:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1644110827, now seen corresponding path program 1 times [2021-11-02 13:15:35,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:15:35,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793128605] [2021-11-02 13:15:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:35,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:15:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:15:36,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:15:36,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793128605] [2021-11-02 13:15:36,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793128605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:15:36,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:15:36,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:15:36,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744317258] [2021-11-02 13:15:36,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:15:36,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:15:36,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:15:36,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:15:36,069 INFO L87 Difference]: Start difference. First operand 811 states and 878 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:38,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:15:40,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:15:40,966 INFO L93 Difference]: Finished difference Result 835 states and 903 transitions. [2021-11-02 13:15:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:15:40,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 13:15:40,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:15:40,968 INFO L225 Difference]: With dead ends: 835 [2021-11-02 13:15:40,968 INFO L226 Difference]: Without dead ends: 758 [2021-11-02 13:15:40,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 202.31ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:15:40,969 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 224 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4387.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.72ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4707.05ms IncrementalHoareTripleChecker+Time [2021-11-02 13:15:40,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 0 Invalid, 832 Unknown, 0 Unchecked, 6.72ms Time], IncrementalHoareTripleChecker [12 Valid, 819 Invalid, 1 Unknown, 0 Unchecked, 4707.05ms Time] [2021-11-02 13:15:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-11-02 13:15:41,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 730. [2021-11-02 13:15:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 721 states have (on average 1.0957004160887656) internal successors, (790), 729 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 790 transitions. [2021-11-02 13:15:41,009 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 790 transitions. Word has length 94 [2021-11-02 13:15:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:15:41,009 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 790 transitions. [2021-11-02 13:15:41,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:41,009 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 790 transitions. [2021-11-02 13:15:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 13:15:41,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:15:41,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:15:41,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-02 13:15:41,010 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:15:41,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:15:41,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1211380649, now seen corresponding path program 1 times [2021-11-02 13:15:41,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:15:41,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184821745] [2021-11-02 13:15:41,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:41,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:15:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:15:44,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:15:44,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184821745] [2021-11-02 13:15:44,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184821745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:15:44,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:15:44,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 13:15:44,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865703536] [2021-11-02 13:15:44,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 13:15:44,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:15:44,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 13:15:44,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:15:44,275 INFO L87 Difference]: Start difference. First operand 730 states and 790 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:46,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:15:54,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:15:54,515 INFO L93 Difference]: Finished difference Result 939 states and 1017 transitions. [2021-11-02 13:15:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 13:15:54,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 13:15:54,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:15:54,517 INFO L225 Difference]: With dead ends: 939 [2021-11-02 13:15:54,517 INFO L226 Difference]: Without dead ends: 854 [2021-11-02 13:15:54,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1535.22ms TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2021-11-02 13:15:54,518 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 625 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8541.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.94ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9046.36ms IncrementalHoareTripleChecker+Time [2021-11-02 13:15:54,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 0 Invalid, 2125 Unknown, 0 Unchecked, 21.94ms Time], IncrementalHoareTripleChecker [16 Valid, 2108 Invalid, 1 Unknown, 0 Unchecked, 9046.36ms Time] [2021-11-02 13:15:54,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-11-02 13:15:54,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 723. [2021-11-02 13:15:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 715 states have (on average 1.0937062937062938) internal successors, (782), 722 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 782 transitions. [2021-11-02 13:15:54,561 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 782 transitions. Word has length 94 [2021-11-02 13:15:54,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:15:54,561 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 782 transitions. [2021-11-02 13:15:54,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:54,562 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 782 transitions. [2021-11-02 13:15:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 13:15:54,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:15:54,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:15:54,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-02 13:15:54,563 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:15:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:15:54,563 INFO L85 PathProgramCache]: Analyzing trace with hash 526175424, now seen corresponding path program 1 times [2021-11-02 13:15:54,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:15:54,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950301715] [2021-11-02 13:15:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:54,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:15:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:15:54,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:15:54,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950301715] [2021-11-02 13:15:54,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950301715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:15:54,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:15:54,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:15:54,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479521853] [2021-11-02 13:15:54,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:15:54,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:15:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:15:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:15:54,875 INFO L87 Difference]: Start difference. First operand 723 states and 782 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:57,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:16:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:16:01,148 INFO L93 Difference]: Finished difference Result 1130 states and 1231 transitions. [2021-11-02 13:16:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:16:01,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-02 13:16:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:16:01,150 INFO L225 Difference]: With dead ends: 1130 [2021-11-02 13:16:01,150 INFO L226 Difference]: Without dead ends: 963 [2021-11-02 13:16:01,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 186.79ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:16:01,152 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 200 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5671.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.60ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6060.30ms IncrementalHoareTripleChecker+Time [2021-11-02 13:16:01,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 0 Invalid, 1168 Unknown, 0 Unchecked, 9.60ms Time], IncrementalHoareTripleChecker [3 Valid, 1164 Invalid, 1 Unknown, 0 Unchecked, 6060.30ms Time] [2021-11-02 13:16:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-11-02 13:16:01,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 830. [2021-11-02 13:16:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 822 states have (on average 1.0827250608272505) internal successors, (890), 829 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 890 transitions. [2021-11-02 13:16:01,205 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 890 transitions. Word has length 98 [2021-11-02 13:16:01,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:16:01,206 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 890 transitions. [2021-11-02 13:16:01,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:01,206 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 890 transitions. [2021-11-02 13:16:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 13:16:01,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:16:01,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:16:01,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-02 13:16:01,207 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:16:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:16:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1768352266, now seen corresponding path program 1 times [2021-11-02 13:16:01,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:16:01,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200212156] [2021-11-02 13:16:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:16:01,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:16:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:16:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:16:01,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:16:01,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200212156] [2021-11-02 13:16:01,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200212156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:16:01,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:16:01,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:16:01,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390269143] [2021-11-02 13:16:01,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:16:01,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:16:01,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:16:01,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:16:01,536 INFO L87 Difference]: Start difference. First operand 830 states and 890 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:03,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:16:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:16:07,942 INFO L93 Difference]: Finished difference Result 1163 states and 1248 transitions. [2021-11-02 13:16:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:16:07,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-02 13:16:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:16:07,944 INFO L225 Difference]: With dead ends: 1163 [2021-11-02 13:16:07,945 INFO L226 Difference]: Without dead ends: 1056 [2021-11-02 13:16:07,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 367.37ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:16:07,945 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 491 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5637.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.30ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6031.49ms IncrementalHoareTripleChecker+Time [2021-11-02 13:16:07,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 0 Invalid, 1275 Unknown, 0 Unchecked, 11.30ms Time], IncrementalHoareTripleChecker [10 Valid, 1264 Invalid, 1 Unknown, 0 Unchecked, 6031.49ms Time] [2021-11-02 13:16:07,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2021-11-02 13:16:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 813. [2021-11-02 13:16:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 805 states have (on average 1.0832298136645964) internal successors, (872), 812 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 872 transitions. [2021-11-02 13:16:07,998 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 872 transitions. Word has length 99 [2021-11-02 13:16:07,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:16:07,998 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 872 transitions. [2021-11-02 13:16:07,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:07,999 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 872 transitions. [2021-11-02 13:16:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 13:16:07,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:16:07,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:16:08,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-02 13:16:08,000 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:16:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:16:08,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2078508213, now seen corresponding path program 1 times [2021-11-02 13:16:08,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:16:08,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667105193] [2021-11-02 13:16:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:16:08,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:16:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:16:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:16:08,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:16:08,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667105193] [2021-11-02 13:16:08,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667105193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:16:08,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:16:08,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:16:08,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061559294] [2021-11-02 13:16:08,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:16:08,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:16:08,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:16:08,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:16:08,672 INFO L87 Difference]: Start difference. First operand 813 states and 872 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:10,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:16:14,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:16:14,204 INFO L93 Difference]: Finished difference Result 1005 states and 1080 transitions. [2021-11-02 13:16:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:16:14,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-02 13:16:14,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:16:14,206 INFO L225 Difference]: With dead ends: 1005 [2021-11-02 13:16:14,206 INFO L226 Difference]: Without dead ends: 1003 [2021-11-02 13:16:14,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 369.65ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:16:14,207 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 466 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4865.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.52ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5289.88ms IncrementalHoareTripleChecker+Time [2021-11-02 13:16:14,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 0 Invalid, 949 Unknown, 0 Unchecked, 9.52ms Time], IncrementalHoareTripleChecker [4 Valid, 944 Invalid, 1 Unknown, 0 Unchecked, 5289.88ms Time] [2021-11-02 13:16:14,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-02 13:16:14,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 811. [2021-11-02 13:16:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 804 states have (on average 1.078358208955224) internal successors, (867), 810 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 867 transitions. [2021-11-02 13:16:14,259 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 867 transitions. Word has length 100 [2021-11-02 13:16:14,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:16:14,259 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 867 transitions. [2021-11-02 13:16:14,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:14,259 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 867 transitions. [2021-11-02 13:16:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 13:16:14,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:16:14,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:16:14,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-02 13:16:14,261 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:16:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:16:14,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1992595281, now seen corresponding path program 1 times [2021-11-02 13:16:14,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:16:14,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306903515] [2021-11-02 13:16:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:16:14,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:16:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:16:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:16:18,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:16:18,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306903515] [2021-11-02 13:16:18,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306903515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:16:18,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:16:18,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 13:16:18,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757795872] [2021-11-02 13:16:18,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 13:16:18,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:16:18,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 13:16:18,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:16:18,506 INFO L87 Difference]: Start difference. First operand 811 states and 867 transitions. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:21,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:16:29,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:16:29,178 INFO L93 Difference]: Finished difference Result 993 states and 1051 transitions. [2021-11-02 13:16:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 13:16:29,178 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-02 13:16:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:16:29,179 INFO L225 Difference]: With dead ends: 993 [2021-11-02 13:16:29,179 INFO L226 Difference]: Without dead ends: 739 [2021-11-02 13:16:29,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1972.62ms TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2021-11-02 13:16:29,180 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 634 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8702.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.03ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9382.88ms IncrementalHoareTripleChecker+Time [2021-11-02 13:16:29,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 0 Invalid, 2234 Unknown, 0 Unchecked, 21.03ms Time], IncrementalHoareTripleChecker [30 Valid, 2203 Invalid, 1 Unknown, 0 Unchecked, 9382.88ms Time] [2021-11-02 13:16:29,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2021-11-02 13:16:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 687. [2021-11-02 13:16:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 681 states have (on average 1.0719530102790014) internal successors, (730), 686 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:29,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 730 transitions. [2021-11-02 13:16:29,221 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 730 transitions. Word has length 100 [2021-11-02 13:16:29,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:16:29,221 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 730 transitions. [2021-11-02 13:16:29,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:29,221 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 730 transitions. [2021-11-02 13:16:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-02 13:16:29,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:16:29,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:16:29,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-02 13:16:29,223 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:16:29,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:16:29,223 INFO L85 PathProgramCache]: Analyzing trace with hash 298918310, now seen corresponding path program 1 times [2021-11-02 13:16:29,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:16:29,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676146721] [2021-11-02 13:16:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:16:29,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:16:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:16:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:16:33,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:16:33,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676146721] [2021-11-02 13:16:33,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676146721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:16:33,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:16:33,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 13:16:33,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168735502] [2021-11-02 13:16:33,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 13:16:33,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:16:33,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 13:16:33,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:16:33,405 INFO L87 Difference]: Start difference. First operand 687 states and 730 transitions. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:35,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:16:44,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:16:44,955 INFO L93 Difference]: Finished difference Result 1294 states and 1369 transitions. [2021-11-02 13:16:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 13:16:44,956 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-02 13:16:44,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:16:44,958 INFO L225 Difference]: With dead ends: 1294 [2021-11-02 13:16:44,958 INFO L226 Difference]: Without dead ends: 1292 [2021-11-02 13:16:44,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3405.40ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-11-02 13:16:44,958 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1326 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8315.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.06ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8963.82ms IncrementalHoareTripleChecker+Time [2021-11-02 13:16:44,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 0 Invalid, 2179 Unknown, 0 Unchecked, 24.06ms Time], IncrementalHoareTripleChecker [46 Valid, 2132 Invalid, 1 Unknown, 0 Unchecked, 8963.82ms Time] [2021-11-02 13:16:44,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-11-02 13:16:45,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 817. [2021-11-02 13:16:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 811 states have (on average 1.0715166461159062) internal successors, (869), 816 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 869 transitions. [2021-11-02 13:16:45,017 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 869 transitions. Word has length 103 [2021-11-02 13:16:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:16:45,017 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 869 transitions. [2021-11-02 13:16:45,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:45,017 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 869 transitions. [2021-11-02 13:16:45,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-02 13:16:45,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:16:45,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:16:45,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-02 13:16:45,019 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:16:45,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:16:45,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1024962729, now seen corresponding path program 1 times [2021-11-02 13:16:45,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:16:45,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192807024] [2021-11-02 13:16:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:16:45,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:16:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:16:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:16:45,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:16:45,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192807024] [2021-11-02 13:16:45,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192807024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:16:45,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:16:45,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:16:45,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043239787] [2021-11-02 13:16:45,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:16:45,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:16:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:16:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:16:45,396 INFO L87 Difference]: Start difference. First operand 817 states and 869 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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) [2021-11-02 13:16:47,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:16:51,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:16:51,924 INFO L93 Difference]: Finished difference Result 953 states and 1017 transitions. [2021-11-02 13:16:51,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 13:16:51,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 104 [2021-11-02 13:16:51,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:16:51,926 INFO L225 Difference]: With dead ends: 953 [2021-11-02 13:16:51,926 INFO L226 Difference]: Without dead ends: 854 [2021-11-02 13:16:51,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 856.20ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:16:51,927 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 592 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5295.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.97ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5723.28ms IncrementalHoareTripleChecker+Time [2021-11-02 13:16:51,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 0 Invalid, 1137 Unknown, 0 Unchecked, 11.97ms Time], IncrementalHoareTripleChecker [40 Valid, 1096 Invalid, 1 Unknown, 0 Unchecked, 5723.28ms Time] [2021-11-02 13:16:51,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-11-02 13:16:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 814. [2021-11-02 13:16:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 808 states have (on average 1.0792079207920793) internal successors, (872), 813 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 872 transitions. [2021-11-02 13:16:51,978 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 872 transitions. Word has length 104 [2021-11-02 13:16:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:16:51,978 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 872 transitions. [2021-11-02 13:16:51,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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) [2021-11-02 13:16:51,978 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 872 transitions. [2021-11-02 13:16:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-02 13:16:51,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:16:51,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:16:51,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-02 13:16:51,979 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:16:51,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:16:51,980 INFO L85 PathProgramCache]: Analyzing trace with hash -877967230, now seen corresponding path program 1 times [2021-11-02 13:16:51,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:16:51,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829468005] [2021-11-02 13:16:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:16:51,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:16:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:17:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:17:00,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:17:00,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829468005] [2021-11-02 13:17:00,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829468005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:17:00,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:17:00,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 13:17:00,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001504082] [2021-11-02 13:17:00,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 13:17:00,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:17:00,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 13:17:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:17:00,145 INFO L87 Difference]: Start difference. First operand 814 states and 872 transitions. Second operand has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:02,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:17:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:17:14,481 INFO L93 Difference]: Finished difference Result 916 states and 976 transitions. [2021-11-02 13:17:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 13:17:14,481 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-02 13:17:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:17:14,496 INFO L225 Difference]: With dead ends: 916 [2021-11-02 13:17:14,497 INFO L226 Difference]: Without dead ends: 914 [2021-11-02 13:17:14,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 4272.04ms TimeCoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2021-11-02 13:17:14,497 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1237 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 2643 mSolverCounterSat, 84 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10353.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.21ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2643 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11125.13ms IncrementalHoareTripleChecker+Time [2021-11-02 13:17:14,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 0 Invalid, 2728 Unknown, 0 Unchecked, 30.21ms Time], IncrementalHoareTripleChecker [84 Valid, 2643 Invalid, 1 Unknown, 0 Unchecked, 11125.13ms Time] [2021-11-02 13:17:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-02 13:17:14,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 814. [2021-11-02 13:17:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 808 states have (on average 1.077970297029703) internal successors, (871), 813 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 871 transitions. [2021-11-02 13:17:14,548 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 871 transitions. Word has length 108 [2021-11-02 13:17:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:17:14,549 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 871 transitions. [2021-11-02 13:17:14,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:14,549 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 871 transitions. [2021-11-02 13:17:14,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-02 13:17:14,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:17:14,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:17:14,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-02 13:17:14,551 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:17:14,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:17:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash -820736864, now seen corresponding path program 1 times [2021-11-02 13:17:14,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:17:14,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452396189] [2021-11-02 13:17:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:17:14,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:17:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:17:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:17:14,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:17:14,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452396189] [2021-11-02 13:17:14,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452396189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:17:14,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:17:14,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:17:14,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955936839] [2021-11-02 13:17:14,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:17:14,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:17:14,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:17:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:17:14,841 INFO L87 Difference]: Start difference. First operand 814 states and 871 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:16,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:17:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:17:20,502 INFO L93 Difference]: Finished difference Result 942 states and 1004 transitions. [2021-11-02 13:17:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:17:20,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-02 13:17:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:17:20,505 INFO L225 Difference]: With dead ends: 942 [2021-11-02 13:17:20,505 INFO L226 Difference]: Without dead ends: 874 [2021-11-02 13:17:20,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 312.81ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:17:20,505 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 380 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4913.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.79ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5358.86ms IncrementalHoareTripleChecker+Time [2021-11-02 13:17:20,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 0 Invalid, 1159 Unknown, 0 Unchecked, 8.79ms Time], IncrementalHoareTripleChecker [9 Valid, 1149 Invalid, 1 Unknown, 0 Unchecked, 5358.86ms Time] [2021-11-02 13:17:20,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-02 13:17:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 785. [2021-11-02 13:17:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 779 states have (on average 1.0693196405648266) internal successors, (833), 784 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 833 transitions. [2021-11-02 13:17:20,580 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 833 transitions. Word has length 108 [2021-11-02 13:17:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:17:20,580 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 833 transitions. [2021-11-02 13:17:20,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 833 transitions. [2021-11-02 13:17:20,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-02 13:17:20,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:17:20,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:17:20,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-02 13:17:20,581 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:17:20,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:17:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash -60752716, now seen corresponding path program 1 times [2021-11-02 13:17:20,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:17:20,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066051806] [2021-11-02 13:17:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:17:20,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:17:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:17:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:17:20,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:17:21,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066051806] [2021-11-02 13:17:21,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066051806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:17:21,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:17:21,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:17:21,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102374043] [2021-11-02 13:17:21,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:17:21,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:17:21,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:17:21,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:17:21,001 INFO L87 Difference]: Start difference. First operand 785 states and 833 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:23,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:17:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:17:27,967 INFO L93 Difference]: Finished difference Result 855 states and 906 transitions. [2021-11-02 13:17:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:17:27,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-02 13:17:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:17:27,968 INFO L225 Difference]: With dead ends: 855 [2021-11-02 13:17:27,969 INFO L226 Difference]: Without dead ends: 769 [2021-11-02 13:17:27,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 414.38ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:17:27,969 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 199 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6126.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.09ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6637.97ms IncrementalHoareTripleChecker+Time [2021-11-02 13:17:27,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 0 Invalid, 1349 Unknown, 0 Unchecked, 11.09ms Time], IncrementalHoareTripleChecker [14 Valid, 1334 Invalid, 1 Unknown, 0 Unchecked, 6637.97ms Time] [2021-11-02 13:17:27,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2021-11-02 13:17:28,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 755. [2021-11-02 13:17:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 750 states have (on average 1.0613333333333332) internal successors, (796), 754 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 796 transitions. [2021-11-02 13:17:28,021 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 796 transitions. Word has length 108 [2021-11-02 13:17:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:17:28,022 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 796 transitions. [2021-11-02 13:17:28,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:28,022 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 796 transitions. [2021-11-02 13:17:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-02 13:17:28,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:17:28,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:17:28,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-02 13:17:28,023 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:17:28,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:17:28,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1971687249, now seen corresponding path program 1 times [2021-11-02 13:17:28,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:17:28,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457394904] [2021-11-02 13:17:28,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:17:28,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:17:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:17:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:17:29,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:17:29,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457394904] [2021-11-02 13:17:29,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457394904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:17:29,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:17:29,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 13:17:29,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239934667] [2021-11-02 13:17:29,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 13:17:29,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:17:29,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 13:17:29,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:17:29,018 INFO L87 Difference]: Start difference. First operand 755 states and 796 transitions. Second operand has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:31,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:17:42,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:17:42,391 INFO L93 Difference]: Finished difference Result 965 states and 1015 transitions. [2021-11-02 13:17:42,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 13:17:42,391 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-02 13:17:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:17:42,392 INFO L225 Difference]: With dead ends: 965 [2021-11-02 13:17:42,392 INFO L226 Difference]: Without dead ends: 829 [2021-11-02 13:17:42,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1452.07ms TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2021-11-02 13:17:42,393 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 990 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11444.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.76ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12249.48ms IncrementalHoareTripleChecker+Time [2021-11-02 13:17:42,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 0 Invalid, 3274 Unknown, 0 Unchecked, 31.76ms Time], IncrementalHoareTripleChecker [40 Valid, 3233 Invalid, 1 Unknown, 0 Unchecked, 12249.48ms Time] [2021-11-02 13:17:42,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2021-11-02 13:17:42,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 649. [2021-11-02 13:17:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 644 states have (on average 1.0543478260869565) internal successors, (679), 648 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 679 transitions. [2021-11-02 13:17:42,431 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 679 transitions. Word has length 114 [2021-11-02 13:17:42,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:17:42,431 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 679 transitions. [2021-11-02 13:17:42,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:42,431 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 679 transitions. [2021-11-02 13:17:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-02 13:17:42,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:17:42,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:17:42,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-02 13:17:42,432 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:17:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:17:42,432 INFO L85 PathProgramCache]: Analyzing trace with hash 51100407, now seen corresponding path program 1 times [2021-11-02 13:17:42,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:17:42,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017707796] [2021-11-02 13:17:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:17:42,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:17:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:17:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:17:45,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:17:45,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017707796] [2021-11-02 13:17:45,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017707796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:17:45,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:17:45,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 13:17:45,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631573622] [2021-11-02 13:17:45,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 13:17:45,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:17:45,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 13:17:45,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:17:45,905 INFO L87 Difference]: Start difference. First operand 649 states and 679 transitions. Second operand has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:48,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:17:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:17:58,477 INFO L93 Difference]: Finished difference Result 1030 states and 1072 transitions. [2021-11-02 13:17:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 13:17:58,478 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-02 13:17:58,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:17:58,479 INFO L225 Difference]: With dead ends: 1030 [2021-11-02 13:17:58,479 INFO L226 Difference]: Without dead ends: 1015 [2021-11-02 13:17:58,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2397.17ms TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2021-11-02 13:17:58,480 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1200 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 3475 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9954.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.65ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10657.96ms IncrementalHoareTripleChecker+Time [2021-11-02 13:17:58,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 0 Invalid, 3522 Unknown, 0 Unchecked, 27.65ms Time], IncrementalHoareTripleChecker [46 Valid, 3475 Invalid, 1 Unknown, 0 Unchecked, 10657.96ms Time] [2021-11-02 13:17:58,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-11-02 13:17:58,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 707. [2021-11-02 13:17:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 702 states have (on average 1.0512820512820513) internal successors, (738), 706 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 738 transitions. [2021-11-02 13:17:58,522 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 738 transitions. Word has length 115 [2021-11-02 13:17:58,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:17:58,522 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 738 transitions. [2021-11-02 13:17:58,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:58,522 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 738 transitions. [2021-11-02 13:17:58,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-02 13:17:58,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:17:58,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:17:58,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-02 13:17:58,523 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:17:58,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:17:58,523 INFO L85 PathProgramCache]: Analyzing trace with hash 731158777, now seen corresponding path program 1 times [2021-11-02 13:17:58,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:17:58,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581844516] [2021-11-02 13:17:58,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:17:58,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:17:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:17:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:17:58,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:17:58,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581844516] [2021-11-02 13:17:58,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581844516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:17:58,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:17:58,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:17:58,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734494634] [2021-11-02 13:17:58,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:17:58,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:17:58,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:17:58,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:17:58,982 INFO L87 Difference]: Start difference. First operand 707 states and 738 transitions. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:01,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:18:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:18:03,764 INFO L93 Difference]: Finished difference Result 768 states and 800 transitions. [2021-11-02 13:18:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:18:03,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-02 13:18:03,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:18:03,765 INFO L225 Difference]: With dead ends: 768 [2021-11-02 13:18:03,765 INFO L226 Difference]: Without dead ends: 736 [2021-11-02 13:18:03,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 415.11ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:18:03,765 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 505 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4163.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.93ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4516.22ms IncrementalHoareTripleChecker+Time [2021-11-02 13:18:03,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 0 Invalid, 1005 Unknown, 0 Unchecked, 6.93ms Time], IncrementalHoareTripleChecker [28 Valid, 976 Invalid, 1 Unknown, 0 Unchecked, 4516.22ms Time] [2021-11-02 13:18:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-11-02 13:18:03,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 703. [2021-11-02 13:18:03,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 698 states have (on average 1.0458452722063036) internal successors, (730), 702 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:03,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 730 transitions. [2021-11-02 13:18:03,807 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 730 transitions. Word has length 115 [2021-11-02 13:18:03,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:18:03,807 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 730 transitions. [2021-11-02 13:18:03,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:03,807 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 730 transitions. [2021-11-02 13:18:03,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-02 13:18:03,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:18:03,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:18:03,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-02 13:18:03,808 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:18:03,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:18:03,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1573300589, now seen corresponding path program 1 times [2021-11-02 13:18:03,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:18:03,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683380984] [2021-11-02 13:18:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:18:03,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:18:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:18:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:18:05,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:18:05,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683380984] [2021-11-02 13:18:05,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683380984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:18:05,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:18:05,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-02 13:18:05,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448734222] [2021-11-02 13:18:05,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 13:18:05,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:18:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 13:18:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:18:05,265 INFO L87 Difference]: Start difference. First operand 703 states and 730 transitions. Second operand has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:07,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:18:22,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:18:22,413 INFO L93 Difference]: Finished difference Result 817 states and 843 transitions. [2021-11-02 13:18:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-02 13:18:22,414 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-02 13:18:22,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:18:22,414 INFO L225 Difference]: With dead ends: 817 [2021-11-02 13:18:22,414 INFO L226 Difference]: Without dead ends: 737 [2021-11-02 13:18:22,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 5166.48ms TimeCoverageRelationStatistics Valid=470, Invalid=2500, Unknown=0, NotChecked=0, Total=2970 [2021-11-02 13:18:22,415 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1035 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 3616 mSolverCounterSat, 93 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11854.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.95ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12639.34ms IncrementalHoareTripleChecker+Time [2021-11-02 13:18:22,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 0 Invalid, 3710 Unknown, 0 Unchecked, 32.95ms Time], IncrementalHoareTripleChecker [93 Valid, 3616 Invalid, 1 Unknown, 0 Unchecked, 12639.34ms Time] [2021-11-02 13:18:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-02 13:18:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 706. [2021-11-02 13:18:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 701 states have (on average 1.0456490727532097) internal successors, (733), 705 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 733 transitions. [2021-11-02 13:18:22,461 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 733 transitions. Word has length 115 [2021-11-02 13:18:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:18:22,462 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 733 transitions. [2021-11-02 13:18:22,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 733 transitions. [2021-11-02 13:18:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-02 13:18:22,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:18:22,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:18:22,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-02 13:18:22,463 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:18:22,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:18:22,463 INFO L85 PathProgramCache]: Analyzing trace with hash -459372320, now seen corresponding path program 1 times [2021-11-02 13:18:22,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:18:22,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766823228] [2021-11-02 13:18:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:18:22,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:18:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:18:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:18:23,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:18:23,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766823228] [2021-11-02 13:18:23,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766823228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:18:23,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:18:23,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 13:18:23,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162856357] [2021-11-02 13:18:23,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 13:18:23,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:18:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 13:18:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:18:23,363 INFO L87 Difference]: Start difference. First operand 706 states and 733 transitions. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:25,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:18:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:18:32,425 INFO L93 Difference]: Finished difference Result 1002 states and 1039 transitions. [2021-11-02 13:18:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 13:18:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-02 13:18:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:18:32,426 INFO L225 Difference]: With dead ends: 1002 [2021-11-02 13:18:32,426 INFO L226 Difference]: Without dead ends: 764 [2021-11-02 13:18:32,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1105.52ms TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2021-11-02 13:18:32,427 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1088 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7620.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.83ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8243.30ms IncrementalHoareTripleChecker+Time [2021-11-02 13:18:32,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 0 Invalid, 1977 Unknown, 0 Unchecked, 17.83ms Time], IncrementalHoareTripleChecker [42 Valid, 1934 Invalid, 1 Unknown, 0 Unchecked, 8243.30ms Time] [2021-11-02 13:18:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-02 13:18:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 700. [2021-11-02 13:18:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 695 states have (on average 1.0431654676258992) internal successors, (725), 699 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 725 transitions. [2021-11-02 13:18:32,470 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 725 transitions. Word has length 118 [2021-11-02 13:18:32,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:18:32,470 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 725 transitions. [2021-11-02 13:18:32,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:32,470 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 725 transitions. [2021-11-02 13:18:32,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 13:18:32,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:18:32,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:18:32,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-02 13:18:32,471 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:18:32,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:18:32,472 INFO L85 PathProgramCache]: Analyzing trace with hash -698611479, now seen corresponding path program 1 times [2021-11-02 13:18:32,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:18:32,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623556854] [2021-11-02 13:18:32,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:18:32,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:18:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:18:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:18:38,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:18:38,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623556854] [2021-11-02 13:18:38,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623556854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:18:38,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:18:38,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 13:18:38,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245756117] [2021-11-02 13:18:38,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 13:18:38,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:18:38,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 13:18:38,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:18:38,448 INFO L87 Difference]: Start difference. First operand 700 states and 725 transitions. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:40,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:18:49,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:18:49,080 INFO L93 Difference]: Finished difference Result 919 states and 950 transitions. [2021-11-02 13:18:49,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 13:18:49,081 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-02 13:18:49,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:18:49,082 INFO L225 Difference]: With dead ends: 919 [2021-11-02 13:18:49,082 INFO L226 Difference]: Without dead ends: 861 [2021-11-02 13:18:49,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1733.20ms TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2021-11-02 13:18:49,083 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 986 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8665.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.62ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9326.78ms IncrementalHoareTripleChecker+Time [2021-11-02 13:18:49,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 0 Invalid, 2833 Unknown, 0 Unchecked, 22.62ms Time], IncrementalHoareTripleChecker [50 Valid, 2782 Invalid, 1 Unknown, 0 Unchecked, 9326.78ms Time] [2021-11-02 13:18:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-11-02 13:18:49,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 670. [2021-11-02 13:18:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 665 states have (on average 1.049624060150376) internal successors, (698), 669 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:49,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 698 transitions. [2021-11-02 13:18:49,126 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 698 transitions. Word has length 121 [2021-11-02 13:18:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:18:49,126 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 698 transitions. [2021-11-02 13:18:49,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 698 transitions. [2021-11-02 13:18:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 13:18:49,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:18:49,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:18:49,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-02 13:18:49,127 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:18:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:18:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1602895479, now seen corresponding path program 1 times [2021-11-02 13:18:49,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:18:49,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403861680] [2021-11-02 13:18:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:18:49,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:18:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:18:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:18:54,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:18:54,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403861680] [2021-11-02 13:18:54,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403861680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:18:54,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:18:54,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 13:18:54,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767202730] [2021-11-02 13:18:54,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 13:18:54,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:18:54,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 13:18:54,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:18:54,420 INFO L87 Difference]: Start difference. First operand 670 states and 698 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 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) [2021-11-02 13:18:56,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:19:06,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:19:06,624 INFO L93 Difference]: Finished difference Result 823 states and 853 transitions. [2021-11-02 13:19:06,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 13:19:06,625 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 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) Word has length 123 [2021-11-02 13:19:06,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:19:06,626 INFO L225 Difference]: With dead ends: 823 [2021-11-02 13:19:06,626 INFO L226 Difference]: Without dead ends: 706 [2021-11-02 13:19:06,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1395.53ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-02 13:19:06,626 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 766 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10438.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.59ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11168.15ms IncrementalHoareTripleChecker+Time [2021-11-02 13:19:06,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 0 Invalid, 3159 Unknown, 0 Unchecked, 26.59ms Time], IncrementalHoareTripleChecker [20 Valid, 3138 Invalid, 1 Unknown, 0 Unchecked, 11168.15ms Time] [2021-11-02 13:19:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-11-02 13:19:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 568. [2021-11-02 13:19:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 563 states have (on average 1.0550621669626998) internal successors, (594), 567 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:19:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 594 transitions. [2021-11-02 13:19:06,662 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 594 transitions. Word has length 123 [2021-11-02 13:19:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:19:06,663 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 594 transitions. [2021-11-02 13:19:06,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 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) [2021-11-02 13:19:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 594 transitions. [2021-11-02 13:19:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 13:19:06,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:19:06,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:19:06,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-02 13:19:06,664 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:19:06,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:19:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1366392471, now seen corresponding path program 1 times [2021-11-02 13:19:06,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:19:06,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366711316] [2021-11-02 13:19:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:19:06,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:19:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:19:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:19:10,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:19:10,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366711316] [2021-11-02 13:19:10,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366711316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:19:10,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:19:10,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 13:19:10,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215537351] [2021-11-02 13:19:10,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 13:19:10,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:19:10,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 13:19:10,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:19:10,548 INFO L87 Difference]: Start difference. First operand 568 states and 594 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 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) [2021-11-02 13:19:12,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:19:24,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:19:24,408 INFO L93 Difference]: Finished difference Result 705 states and 730 transitions. [2021-11-02 13:19:24,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 13:19:24,409 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 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) Word has length 123 [2021-11-02 13:19:24,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:19:24,410 INFO L225 Difference]: With dead ends: 705 [2021-11-02 13:19:24,410 INFO L226 Difference]: Without dead ends: 615 [2021-11-02 13:19:24,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 4145.38ms TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2021-11-02 13:19:24,410 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 615 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9672.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.63ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10348.73ms IncrementalHoareTripleChecker+Time [2021-11-02 13:19:24,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 0 Invalid, 2833 Unknown, 0 Unchecked, 25.63ms Time], IncrementalHoareTripleChecker [15 Valid, 2817 Invalid, 1 Unknown, 0 Unchecked, 10348.73ms Time] [2021-11-02 13:19:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-02 13:19:24,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 497. [2021-11-02 13:19:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 493 states have (on average 1.050709939148073) internal successors, (518), 496 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:19:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 518 transitions. [2021-11-02 13:19:24,445 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 518 transitions. Word has length 123 [2021-11-02 13:19:24,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:19:24,445 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 518 transitions. [2021-11-02 13:19:24,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 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) [2021-11-02 13:19:24,445 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 518 transitions. [2021-11-02 13:19:24,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-02 13:19:24,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:19:24,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:19:24,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-02 13:19:24,446 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 13:19:24,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:19:24,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1974556805, now seen corresponding path program 1 times [2021-11-02 13:19:24,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:19:24,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944684290] [2021-11-02 13:19:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:19:24,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:19:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:19:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:19:26,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:19:26,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944684290] [2021-11-02 13:19:26,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944684290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:19:26,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:19:26,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 13:19:26,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550235730] [2021-11-02 13:19:26,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 13:19:26,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:19:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 13:19:26,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:19:26,081 INFO L87 Difference]: Start difference. First operand 497 states and 518 transitions. Second operand has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15