./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_compare_lookup_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 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 22:42:46,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 22:42:46,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 22:42:46,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 22:42:46,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 22:42:46,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 22:42:46,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 22:42:46,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 22:42:46,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 22:42:46,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 22:42:46,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 22:42:46,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 22:42:46,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 22:42:46,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 22:42:46,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 22:42:46,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 22:42:46,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 22:42:46,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 22:42:46,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 22:42:46,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 22:42:46,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 22:42:46,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 22:42:46,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 22:42:46,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 22:42:46,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 22:42:46,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 22:42:46,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 22:42:46,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 22:42:46,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 22:42:46,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 22:42:46,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 22:42:46,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 22:42:46,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 22:42:46,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 22:42:46,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 22:42:46,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 22:42:46,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 22:42:46,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 22:42:46,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 22:42:46,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 22:42:46,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 22:42:46,765 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 22:42:46,792 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 22:42:46,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 22:42:46,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 22:42:46,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 22:42:46,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 22:42:46,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 22:42:46,800 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 22:42:46,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 22:42:46,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 22:42:46,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 22:42:46,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 22:42:46,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 22:42:46,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 22:42:46,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 22:42:46,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 22:42:46,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 22:42:46,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 22:42:46,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 22:42:46,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 22:42:46,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:42:46,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 22:42:46,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 22:42:46,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 22:42:46,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 22:42:46,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 22:42:46,804 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 22:42:46,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 22:42:46,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 22:42:46,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 22:42:46,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2021-11-03 22:42:47,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 22:42:47,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 22:42:47,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 22:42:47,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 22:42:47,048 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 22:42:47,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-03 22:42:47,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/890ff6cd0/7c2622c53b6c40729851b2b702a17cd0/FLAGc42f914b4 [2021-11-03 22:42:47,780 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 22:42:47,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-03 22:42:47,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/890ff6cd0/7c2622c53b6c40729851b2b702a17cd0/FLAGc42f914b4 [2021-11-03 22:42:48,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/890ff6cd0/7c2622c53b6c40729851b2b702a17cd0 [2021-11-03 22:42:48,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 22:42:48,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 22:42:48,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 22:42:48,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 22:42:48,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 22:42:48,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:42:48" (1/1) ... [2021-11-03 22:42:48,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566e9952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:48, skipping insertion in model container [2021-11-03 22:42:48,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:42:48" (1/1) ... [2021-11-03 22:42:48,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 22:42:48,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 22:42:48,523 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_compare_lookup_harness.i[4504,4517] [2021-11-03 22:42:48,533 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_compare_lookup_harness.i[4564,4577] [2021-11-03 22:42:48,567 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:42:48,578 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:42:49,582 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:49,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:49,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:49,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:49,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:49,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:49,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:49,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:49,607 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:49,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:42:49,875 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:42:49,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:42:49,877 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:42:49,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:42:49,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:42:49,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:42:49,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:42:49,880 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:42:49,880 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:42:50,119 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:42:50,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:42:50,416 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 22:42:50,439 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_compare_lookup_harness.i[4504,4517] [2021-11-03 22:42:50,440 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_compare_lookup_harness.i[4564,4577] [2021-11-03 22:42:50,441 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:42:50,442 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:42:50,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,488 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,489 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,505 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,506 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,547 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:42:50,548 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:42:50,549 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:42:50,549 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:42:50,550 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:42:50,550 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:42:50,551 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:42:50,553 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:42:50,554 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:42:50,554 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:42:50,574 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:42:50,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:42:50,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:42:50,915 INFO L208 MainTranslator]: Completed translation [2021-11-03 22:42:50,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50 WrapperNode [2021-11-03 22:42:50,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 22:42:50,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 22:42:50,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 22:42:50,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 22:42:50,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50" (1/1) ... [2021-11-03 22:42:51,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50" (1/1) ... [2021-11-03 22:42:51,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 22:42:51,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 22:42:51,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 22:42:51,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 22:42:51,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50" (1/1) ... [2021-11-03 22:42:51,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50" (1/1) ... [2021-11-03 22:42:51,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50" (1/1) ... [2021-11-03 22:42:51,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50" (1/1) ... [2021-11-03 22:42:51,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50" (1/1) ... [2021-11-03 22:42:51,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50" (1/1) ... [2021-11-03 22:42:51,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50" (1/1) ... [2021-11-03 22:42:51,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 22:42:51,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 22:42:51,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 22:42:51,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 22:42:51,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50" (1/1) ... [2021-11-03 22:42:51,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:42:51,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:42:51,320 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) [2021-11-03 22:42:51,344 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 [2021-11-03 22:42:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 22:42:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 22:42:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 22:42:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 22:42:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 22:42:51,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 22:42:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 22:42:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 22:42:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 22:42:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 22:42:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 22:42:57,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 22:42:57,117 INFO L299 CfgBuilder]: Removed 130 assume(true) statements. [2021-11-03 22:42:57,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:42:57 BoogieIcfgContainer [2021-11-03 22:42:57,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 22:42:57,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 22:42:57,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 22:42:57,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 22:42:57,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 10:42:48" (1/3) ... [2021-11-03 22:42:57,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72805036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:42:57, skipping insertion in model container [2021-11-03 22:42:57,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:42:50" (2/3) ... [2021-11-03 22:42:57,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72805036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:42:57, skipping insertion in model container [2021-11-03 22:42:57,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:42:57" (3/3) ... [2021-11-03 22:42:57,134 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lookup_harness.i [2021-11-03 22:42:57,139 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 22:42:57,139 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-03 22:42:57,193 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 22:42:57,202 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 [2021-11-03 22:42:57,203 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-03 22:42:57,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 311 states, 296 states have (on average 1.4864864864864864) internal successors, (440), 310 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:42:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 22:42:57,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:42:57,249 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] [2021-11-03 22:42:57,250 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:42:57,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:42:57,255 INFO L85 PathProgramCache]: Analyzing trace with hash -424146730, now seen corresponding path program 1 times [2021-11-03 22:42:57,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:42:57,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036337320] [2021-11-03 22:42:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:42:57,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:42:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:42:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:42:57,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:42:57,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036337320] [2021-11-03 22:42:57,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036337320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:42:57,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:42:57,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 22:42:57,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881418708] [2021-11-03 22:42:57,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:42:57,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 22:42:57,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:42:58,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 22:42:58,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:42:58,026 INFO L87 Difference]: Start difference. First operand has 311 states, 296 states have (on average 1.4864864864864864) internal successors, (440), 310 states have internal predecessors, (440), 0 states have call successors, (0), 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 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:00,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:43:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:02,040 INFO L93 Difference]: Finished difference Result 618 states and 875 transitions. [2021-11-03 22:43:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 22:43:02,042 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-03 22:43:02,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:02,051 INFO L225 Difference]: With dead ends: 618 [2021-11-03 22:43:02,052 INFO L226 Difference]: Without dead ends: 304 [2021-11-03 22:43:02,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.06ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:43:02,057 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3554.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3917.39ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:02,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 410 Unknown, 0 Unchecked, 6.61ms Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 1 Unknown, 0 Unchecked, 3917.39ms Time] [2021-11-03 22:43:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-03 22:43:02,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-03 22:43:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 290 states have (on average 1.3827586206896552) internal successors, (401), 303 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:02,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 401 transitions. [2021-11-03 22:43:02,099 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 401 transitions. Word has length 39 [2021-11-03 22:43:02,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:02,099 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 401 transitions. [2021-11-03 22:43:02,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:02,100 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 401 transitions. [2021-11-03 22:43:02,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 22:43:02,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:02,102 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] [2021-11-03 22:43:02,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 22:43:02,102 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:43:02,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:02,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1377522796, now seen corresponding path program 1 times [2021-11-03 22:43:02,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:43:02,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228829718] [2021-11-03 22:43:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:02,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:43:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:02,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:43:02,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228829718] [2021-11-03 22:43:02,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228829718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:02,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:02,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:43:02,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899410518] [2021-11-03 22:43:02,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:02,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:43:02,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:43:02,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:43:02,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:43:02,377 INFO L87 Difference]: Start difference. First operand 304 states and 401 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:04,436 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 [] [2021-11-03 22:43:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:07,056 INFO L93 Difference]: Finished difference Result 587 states and 775 transitions. [2021-11-03 22:43:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:43:07,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-03 22:43:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:07,060 INFO L225 Difference]: With dead ends: 587 [2021-11-03 22:43:07,060 INFO L226 Difference]: Without dead ends: 304 [2021-11-03 22:43:07,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:43:07,063 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 569 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4216.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.71ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4555.03ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:07,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 0 Invalid, 615 Unknown, 0 Unchecked, 18.71ms Time], IncrementalHoareTripleChecker [18 Valid, 596 Invalid, 1 Unknown, 0 Unchecked, 4555.03ms Time] [2021-11-03 22:43:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-03 22:43:07,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-03 22:43:07,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 290 states have (on average 1.3689655172413793) internal successors, (397), 303 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 397 transitions. [2021-11-03 22:43:07,094 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 397 transitions. Word has length 39 [2021-11-03 22:43:07,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:07,094 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 397 transitions. [2021-11-03 22:43:07,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 397 transitions. [2021-11-03 22:43:07,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 22:43:07,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:07,098 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] [2021-11-03 22:43:07,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 22:43:07,098 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:43:07,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash 914596510, now seen corresponding path program 1 times [2021-11-03 22:43:07,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:43:07,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370519343] [2021-11-03 22:43:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:07,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:43:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:07,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:43:07,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370519343] [2021-11-03 22:43:07,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370519343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:07,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:07,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:43:07,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405823529] [2021-11-03 22:43:07,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:07,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:43:07,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:43:07,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:43:07,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:43:07,604 INFO L87 Difference]: Start difference. First operand 304 states and 397 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:09,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:43:12,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:12,181 INFO L93 Difference]: Finished difference Result 519 states and 682 transitions. [2021-11-03 22:43:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:43:12,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-03 22:43:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:12,184 INFO L225 Difference]: With dead ends: 519 [2021-11-03 22:43:12,184 INFO L226 Difference]: Without dead ends: 304 [2021-11-03 22:43:12,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 141.10ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:43:12,188 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 857 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4112.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.28ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4432.30ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:12,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 0 Invalid, 678 Unknown, 0 Unchecked, 14.28ms Time], IncrementalHoareTripleChecker [20 Valid, 657 Invalid, 1 Unknown, 0 Unchecked, 4432.30ms Time] [2021-11-03 22:43:12,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-03 22:43:12,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-03 22:43:12,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 290 states have (on average 1.3551724137931034) internal successors, (393), 303 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 393 transitions. [2021-11-03 22:43:12,205 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 393 transitions. Word has length 43 [2021-11-03 22:43:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:12,205 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 393 transitions. [2021-11-03 22:43:12,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 393 transitions. [2021-11-03 22:43:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 22:43:12,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:12,207 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] [2021-11-03 22:43:12,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 22:43:12,208 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:43:12,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:12,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1062682425, now seen corresponding path program 1 times [2021-11-03 22:43:12,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:43:12,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805223490] [2021-11-03 22:43:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:12,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:43:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:12,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:43:12,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805223490] [2021-11-03 22:43:12,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805223490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:12,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:12,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:43:12,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787026347] [2021-11-03 22:43:12,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:12,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:43:12,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:43:12,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:43:12,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:43:12,584 INFO L87 Difference]: Start difference. First operand 304 states and 393 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2021-11-03 22:43:14,641 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 [] [2021-11-03 22:43:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:17,873 INFO L93 Difference]: Finished difference Result 562 states and 728 transitions. [2021-11-03 22:43:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:43:17,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 [2021-11-03 22:43:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:17,875 INFO L225 Difference]: With dead ends: 562 [2021-11-03 22:43:17,876 INFO L226 Difference]: Without dead ends: 304 [2021-11-03 22:43:17,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 146.63ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:43:17,878 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 671 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4612.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.69ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5132.30ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:17,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 0 Invalid, 853 Unknown, 0 Unchecked, 15.69ms Time], IncrementalHoareTripleChecker [19 Valid, 833 Invalid, 1 Unknown, 0 Unchecked, 5132.30ms Time] [2021-11-03 22:43:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-03 22:43:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-03 22:43:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 290 states have (on average 1.3379310344827586) internal successors, (388), 303 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 388 transitions. [2021-11-03 22:43:17,889 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 388 transitions. Word has length 45 [2021-11-03 22:43:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:17,890 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 388 transitions. [2021-11-03 22:43:17,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2021-11-03 22:43:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 388 transitions. [2021-11-03 22:43:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 22:43:17,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:17,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:43:17,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 22:43:17,892 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:43:17,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash -762725292, now seen corresponding path program 1 times [2021-11-03 22:43:17,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:43:17,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154036459] [2021-11-03 22:43:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:17,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:43:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:18,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:43:18,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154036459] [2021-11-03 22:43:18,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154036459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:18,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:18,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:43:18,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604291621] [2021-11-03 22:43:18,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:18,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:43:18,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:43:18,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:43:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:43:18,650 INFO L87 Difference]: Start difference. First operand 304 states and 388 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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) [2021-11-03 22:43:20,714 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 [] [2021-11-03 22:43:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:25,934 INFO L93 Difference]: Finished difference Result 869 states and 1112 transitions. [2021-11-03 22:43:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:43:25,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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 [2021-11-03 22:43:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:25,937 INFO L225 Difference]: With dead ends: 869 [2021-11-03 22:43:25,937 INFO L226 Difference]: Without dead ends: 654 [2021-11-03 22:43:25,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 228.46ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:43:25,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1602 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6577.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.37ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7059.20ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:25,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 0 Invalid, 1306 Unknown, 0 Unchecked, 24.37ms Time], IncrementalHoareTripleChecker [31 Valid, 1274 Invalid, 1 Unknown, 0 Unchecked, 7059.20ms Time] [2021-11-03 22:43:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-11-03 22:43:25,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 402. [2021-11-03 22:43:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 388 states have (on average 1.3298969072164948) internal successors, (516), 401 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 516 transitions. [2021-11-03 22:43:25,959 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 516 transitions. Word has length 47 [2021-11-03 22:43:25,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:25,959 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 516 transitions. [2021-11-03 22:43:25,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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) [2021-11-03 22:43:25,960 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 516 transitions. [2021-11-03 22:43:25,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-03 22:43:25,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:25,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:43:25,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 22:43:25,962 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:43:25,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:25,963 INFO L85 PathProgramCache]: Analyzing trace with hash -93940627, now seen corresponding path program 1 times [2021-11-03 22:43:25,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:43:25,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754605971] [2021-11-03 22:43:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:25,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:43:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:26,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:43:26,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754605971] [2021-11-03 22:43:26,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754605971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:26,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:26,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:43:26,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576911287] [2021-11-03 22:43:26,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:26,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:43:26,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:43:26,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:43:26,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:43:26,659 INFO L87 Difference]: Start difference. First operand 402 states and 516 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:28,747 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 [] [2021-11-03 22:43:36,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:36,117 INFO L93 Difference]: Finished difference Result 841 states and 1043 transitions. [2021-11-03 22:43:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:43:36,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-03 22:43:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:36,121 INFO L225 Difference]: With dead ends: 841 [2021-11-03 22:43:36,121 INFO L226 Difference]: Without dead ends: 821 [2021-11-03 22:43:36,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 291.62ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:43:36,123 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 619 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 173 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8505.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.90ms SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9130.54ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:36,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 0 Invalid, 2119 Unknown, 0 Unchecked, 23.90ms Time], IncrementalHoareTripleChecker [173 Valid, 1945 Invalid, 1 Unknown, 0 Unchecked, 9130.54ms Time] [2021-11-03 22:43:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2021-11-03 22:43:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 458. [2021-11-03 22:43:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 444 states have (on average 1.2882882882882882) internal successors, (572), 457 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 572 transitions. [2021-11-03 22:43:36,143 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 572 transitions. Word has length 48 [2021-11-03 22:43:36,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:36,143 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 572 transitions. [2021-11-03 22:43:36,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 572 transitions. [2021-11-03 22:43:36,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 22:43:36,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:36,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:43:36,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 22:43:36,146 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:43:36,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:36,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1793415963, now seen corresponding path program 1 times [2021-11-03 22:43:36,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:43:36,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401946019] [2021-11-03 22:43:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:36,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:43:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:36,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:43:36,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401946019] [2021-11-03 22:43:36,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401946019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:36,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:36,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:43:36,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279042232] [2021-11-03 22:43:36,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:36,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:43:36,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:43:36,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:43:36,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:43:36,602 INFO L87 Difference]: Start difference. First operand 458 states and 572 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:38,787 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 [] [2021-11-03 22:43:46,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:46,655 INFO L93 Difference]: Finished difference Result 954 states and 1190 transitions. [2021-11-03 22:43:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:43:46,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 22:43:46,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:46,659 INFO L225 Difference]: With dead ends: 954 [2021-11-03 22:43:46,661 INFO L226 Difference]: Without dead ends: 613 [2021-11-03 22:43:46,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 392.79ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:43:46,663 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 572 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9076.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.83ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9673.47ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:46,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 0 Invalid, 2125 Unknown, 0 Unchecked, 22.83ms Time], IncrementalHoareTripleChecker [70 Valid, 2054 Invalid, 1 Unknown, 0 Unchecked, 9673.47ms Time] [2021-11-03 22:43:46,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-11-03 22:43:46,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 490. [2021-11-03 22:43:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 476 states have (on average 1.2836134453781514) internal successors, (611), 489 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 611 transitions. [2021-11-03 22:43:46,682 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 611 transitions. Word has length 52 [2021-11-03 22:43:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:46,682 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 611 transitions. [2021-11-03 22:43:46,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 611 transitions. [2021-11-03 22:43:46,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 22:43:46,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:46,684 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] [2021-11-03 22:43:46,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 22:43:46,684 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:43:46,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:46,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1757038124, now seen corresponding path program 1 times [2021-11-03 22:43:46,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:43:46,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942397443] [2021-11-03 22:43:46,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:46,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:43:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:47,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:43:47,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942397443] [2021-11-03 22:43:47,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942397443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:47,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:47,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:43:47,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704490973] [2021-11-03 22:43:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:47,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:43:47,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:43:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:43:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:43:47,377 INFO L87 Difference]: Start difference. First operand 490 states and 611 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:49,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:43:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:59,604 INFO L93 Difference]: Finished difference Result 1717 states and 2127 transitions. [2021-11-03 22:43:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 22:43:59,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-03 22:43:59,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:59,610 INFO L225 Difference]: With dead ends: 1717 [2021-11-03 22:43:59,610 INFO L226 Difference]: Without dead ends: 1363 [2021-11-03 22:43:59,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1266.17ms TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2021-11-03 22:43:59,612 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2410 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10333.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.29ms SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11003.51ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:59,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2410 Valid, 0 Invalid, 2548 Unknown, 0 Unchecked, 34.29ms Time], IncrementalHoareTripleChecker [78 Valid, 2469 Invalid, 1 Unknown, 0 Unchecked, 11003.51ms Time] [2021-11-03 22:43:59,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-11-03 22:43:59,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 735. [2021-11-03 22:43:59,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 721 states have (on average 1.2787794729542303) internal successors, (922), 734 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) [2021-11-03 22:43:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 922 transitions. [2021-11-03 22:43:59,642 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 922 transitions. Word has length 55 [2021-11-03 22:43:59,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:59,643 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 922 transitions. [2021-11-03 22:43:59,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 922 transitions. [2021-11-03 22:43:59,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 22:43:59,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:59,644 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] [2021-11-03 22:43:59,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 22:43:59,645 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:43:59,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:59,645 INFO L85 PathProgramCache]: Analyzing trace with hash 23921373, now seen corresponding path program 1 times [2021-11-03 22:43:59,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:43:59,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952044943] [2021-11-03 22:43:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:59,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:43:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:44:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:00,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:44:00,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952044943] [2021-11-03 22:44:00,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952044943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:44:00,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:44:00,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:44:00,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871216800] [2021-11-03 22:44:00,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:44:00,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:44:00,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:44:00,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:44:00,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:44:00,494 INFO L87 Difference]: Start difference. First operand 735 states and 922 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:02,559 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 [] [2021-11-03 22:44:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:44:12,380 INFO L93 Difference]: Finished difference Result 1611 states and 1992 transitions. [2021-11-03 22:44:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 22:44:12,381 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-03 22:44:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:44:12,385 INFO L225 Difference]: With dead ends: 1611 [2021-11-03 22:44:12,385 INFO L226 Difference]: Without dead ends: 1233 [2021-11-03 22:44:12,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1462.90ms TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-11-03 22:44:12,387 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2058 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 137 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10006.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.08ms SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10586.18ms IncrementalHoareTripleChecker+Time [2021-11-03 22:44:12,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 0 Invalid, 2579 Unknown, 0 Unchecked, 31.08ms Time], IncrementalHoareTripleChecker [137 Valid, 2441 Invalid, 1 Unknown, 0 Unchecked, 10586.18ms Time] [2021-11-03 22:44:12,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2021-11-03 22:44:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 614. [2021-11-03 22:44:12,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 600 states have (on average 1.2716666666666667) internal successors, (763), 613 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 763 transitions. [2021-11-03 22:44:12,415 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 763 transitions. Word has length 56 [2021-11-03 22:44:12,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:44:12,415 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 763 transitions. [2021-11-03 22:44:12,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:12,416 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 763 transitions. [2021-11-03 22:44:12,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 22:44:12,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:44:12,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:44:12,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 22:44:12,417 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:44:12,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:44:12,418 INFO L85 PathProgramCache]: Analyzing trace with hash -646984683, now seen corresponding path program 1 times [2021-11-03 22:44:12,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:44:12,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528726518] [2021-11-03 22:44:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:44:12,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:44:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:44:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:13,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:44:13,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528726518] [2021-11-03 22:44:13,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528726518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:44:13,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:44:13,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:44:13,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673075905] [2021-11-03 22:44:13,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:44:13,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:44:13,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:44:13,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:44:13,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:44:13,091 INFO L87 Difference]: Start difference. First operand 614 states and 763 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:15,158 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 [] [2021-11-03 22:44:24,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:44:24,552 INFO L93 Difference]: Finished difference Result 2487 states and 3101 transitions. [2021-11-03 22:44:24,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:44:24,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 22:44:24,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:44:24,561 INFO L225 Difference]: With dead ends: 2487 [2021-11-03 22:44:24,562 INFO L226 Difference]: Without dead ends: 2072 [2021-11-03 22:44:24,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 525.60ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:44:24,565 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2195 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10270.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.30ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10885.08ms IncrementalHoareTripleChecker+Time [2021-11-03 22:44:24,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2195 Valid, 0 Invalid, 2498 Unknown, 0 Unchecked, 33.30ms Time], IncrementalHoareTripleChecker [67 Valid, 2430 Invalid, 1 Unknown, 0 Unchecked, 10885.08ms Time] [2021-11-03 22:44:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-11-03 22:44:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 656. [2021-11-03 22:44:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 642 states have (on average 1.2710280373831775) internal successors, (816), 655 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) [2021-11-03 22:44:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 816 transitions. [2021-11-03 22:44:24,599 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 816 transitions. Word has length 58 [2021-11-03 22:44:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:44:24,599 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 816 transitions. [2021-11-03 22:44:24,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:24,600 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 816 transitions. [2021-11-03 22:44:24,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 22:44:24,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:44:24,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:44:24,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 22:44:24,601 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:44:24,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:44:24,602 INFO L85 PathProgramCache]: Analyzing trace with hash 75839676, now seen corresponding path program 1 times [2021-11-03 22:44:24,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:44:24,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836375301] [2021-11-03 22:44:24,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:44:24,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:44:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:44:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:25,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:44:25,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836375301] [2021-11-03 22:44:25,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836375301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:44:25,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:44:25,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:44:25,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858893850] [2021-11-03 22:44:25,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:44:25,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:44:25,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:44:25,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:44:25,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:44:25,483 INFO L87 Difference]: Start difference. First operand 656 states and 816 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:27,549 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 [] [2021-11-03 22:44:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:44:36,731 INFO L93 Difference]: Finished difference Result 1904 states and 2350 transitions. [2021-11-03 22:44:36,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:44:36,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 22:44:36,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:44:36,735 INFO L225 Difference]: With dead ends: 1904 [2021-11-03 22:44:36,735 INFO L226 Difference]: Without dead ends: 1327 [2021-11-03 22:44:36,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 964.17ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:44:36,737 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2022 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9828.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.32ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10399.59ms IncrementalHoareTripleChecker+Time [2021-11-03 22:44:36,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2022 Valid, 0 Invalid, 2504 Unknown, 0 Unchecked, 33.32ms Time], IncrementalHoareTripleChecker [67 Valid, 2436 Invalid, 1 Unknown, 0 Unchecked, 10399.59ms Time] [2021-11-03 22:44:36,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2021-11-03 22:44:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 656. [2021-11-03 22:44:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 642 states have (on average 1.2694704049844237) internal successors, (815), 655 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) [2021-11-03 22:44:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 815 transitions. [2021-11-03 22:44:36,764 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 815 transitions. Word has length 59 [2021-11-03 22:44:36,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:44:36,764 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 815 transitions. [2021-11-03 22:44:36,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:36,764 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 815 transitions. [2021-11-03 22:44:36,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 22:44:36,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:44:36,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:44:36,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 22:44:36,766 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:44:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:44:36,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1064163184, now seen corresponding path program 1 times [2021-11-03 22:44:36,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:44:36,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251582289] [2021-11-03 22:44:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:44:36,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:44:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:44:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:37,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:44:37,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251582289] [2021-11-03 22:44:37,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251582289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:44:37,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:44:37,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:44:37,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216519020] [2021-11-03 22:44:37,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:44:37,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:44:37,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:44:37,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:44:37,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:44:37,300 INFO L87 Difference]: Start difference. First operand 656 states and 815 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:39,362 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 [] [2021-11-03 22:44:45,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:44:45,753 INFO L93 Difference]: Finished difference Result 1429 states and 1752 transitions. [2021-11-03 22:44:45,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 22:44:45,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 22:44:45,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:44:45,756 INFO L225 Difference]: With dead ends: 1429 [2021-11-03 22:44:45,756 INFO L226 Difference]: Without dead ends: 857 [2021-11-03 22:44:45,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 541.13ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:44:45,758 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1299 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7610.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.81ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8010.31ms IncrementalHoareTripleChecker+Time [2021-11-03 22:44:45,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1299 Valid, 0 Invalid, 1890 Unknown, 0 Unchecked, 20.81ms Time], IncrementalHoareTripleChecker [42 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 8010.31ms Time] [2021-11-03 22:44:45,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2021-11-03 22:44:45,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 656. [2021-11-03 22:44:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 642 states have (on average 1.2679127725856698) internal successors, (814), 655 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 814 transitions. [2021-11-03 22:44:45,782 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 814 transitions. Word has length 59 [2021-11-03 22:44:45,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:44:45,783 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 814 transitions. [2021-11-03 22:44:45,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:45,783 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 814 transitions. [2021-11-03 22:44:45,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 22:44:45,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:44:45,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:44:45,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 22:44:45,784 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:44:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:44:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -373781338, now seen corresponding path program 1 times [2021-11-03 22:44:45,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:44:45,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698985333] [2021-11-03 22:44:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:44:45,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:44:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:44:46,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:46,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:44:46,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698985333] [2021-11-03 22:44:46,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698985333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:44:46,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:44:46,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:44:46,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143250813] [2021-11-03 22:44:46,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:44:46,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:44:46,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:44:46,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:44:46,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:44:46,390 INFO L87 Difference]: Start difference. First operand 656 states and 814 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:49,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:44:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:44:59,935 INFO L93 Difference]: Finished difference Result 1047 states and 1246 transitions. [2021-11-03 22:44:59,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 22:44:59,935 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 22:44:59,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:44:59,938 INFO L225 Difference]: With dead ends: 1047 [2021-11-03 22:44:59,938 INFO L226 Difference]: Without dead ends: 901 [2021-11-03 22:44:59,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1381.63ms TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-11-03 22:44:59,940 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1151 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 2860 mSolverCounterSat, 114 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11616.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.22ms SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2860 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12281.64ms IncrementalHoareTripleChecker+Time [2021-11-03 22:44:59,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 0 Invalid, 2975 Unknown, 0 Unchecked, 32.22ms Time], IncrementalHoareTripleChecker [114 Valid, 2860 Invalid, 1 Unknown, 0 Unchecked, 12281.64ms Time] [2021-11-03 22:44:59,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2021-11-03 22:44:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 754. [2021-11-03 22:44:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 740 states have (on average 1.2378378378378379) internal successors, (916), 753 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 916 transitions. [2021-11-03 22:44:59,967 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 916 transitions. Word has length 59 [2021-11-03 22:44:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:44:59,967 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 916 transitions. [2021-11-03 22:44:59,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:44:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 916 transitions. [2021-11-03 22:44:59,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 22:44:59,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:44:59,969 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] [2021-11-03 22:44:59,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 22:44:59,969 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:44:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:44:59,970 INFO L85 PathProgramCache]: Analyzing trace with hash 857273045, now seen corresponding path program 1 times [2021-11-03 22:44:59,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:44:59,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768229744] [2021-11-03 22:44:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:44:59,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:45:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:00,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:45:00,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768229744] [2021-11-03 22:45:00,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768229744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:00,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:00,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:45:00,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884653659] [2021-11-03 22:45:00,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:00,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:45:00,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:45:00,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:45:00,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:45:00,733 INFO L87 Difference]: Start difference. First operand 754 states and 916 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 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) [2021-11-03 22:45:02,800 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 [] [2021-11-03 22:45:24,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:24,167 INFO L93 Difference]: Finished difference Result 1688 states and 2063 transitions. [2021-11-03 22:45:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 22:45:24,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 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 [2021-11-03 22:45:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:24,172 INFO L225 Difference]: With dead ends: 1688 [2021-11-03 22:45:24,172 INFO L226 Difference]: Without dead ends: 1164 [2021-11-03 22:45:24,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 2387.48ms TimeCoverageRelationStatistics Valid=314, Invalid=1168, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 22:45:24,174 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1433 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 5818 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20067.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.94ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 5818 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21119.97ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:24,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1433 Valid, 0 Invalid, 5896 Unknown, 0 Unchecked, 67.94ms Time], IncrementalHoareTripleChecker [77 Valid, 5818 Invalid, 1 Unknown, 0 Unchecked, 21119.97ms Time] [2021-11-03 22:45:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2021-11-03 22:45:24,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1014. [2021-11-03 22:45:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 1000 states have (on average 1.248) internal successors, (1248), 1013 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1248 transitions. [2021-11-03 22:45:24,213 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1248 transitions. Word has length 60 [2021-11-03 22:45:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:24,213 INFO L470 AbstractCegarLoop]: Abstraction has 1014 states and 1248 transitions. [2021-11-03 22:45:24,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 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) [2021-11-03 22:45:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1248 transitions. [2021-11-03 22:45:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 22:45:24,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:24,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:45:24,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 22:45:24,215 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:45:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash 482144184, now seen corresponding path program 1 times [2021-11-03 22:45:24,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:45:24,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518718479] [2021-11-03 22:45:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:24,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:45:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:25,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:45:25,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518718479] [2021-11-03 22:45:25,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518718479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:25,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:25,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:45:25,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435415757] [2021-11-03 22:45:25,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:25,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:45:25,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:45:25,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:45:25,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:45:25,196 INFO L87 Difference]: Start difference. First operand 1014 states and 1248 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) [2021-11-03 22:45:28,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:36,846 INFO L93 Difference]: Finished difference Result 1124 states and 1360 transitions. [2021-11-03 22:45:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:45:36,847 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 [2021-11-03 22:45:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:36,851 INFO L225 Difference]: With dead ends: 1124 [2021-11-03 22:45:36,851 INFO L226 Difference]: Without dead ends: 1122 [2021-11-03 22:45:36,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1105.10ms TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:45:36,853 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1275 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10158.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.82ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10769.94ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:36,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 0 Invalid, 2445 Unknown, 0 Unchecked, 28.82ms Time], IncrementalHoareTripleChecker [64 Valid, 2380 Invalid, 1 Unknown, 0 Unchecked, 10769.94ms Time] [2021-11-03 22:45:36,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-11-03 22:45:36,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1014. [2021-11-03 22:45:36,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 1000 states have (on average 1.247) internal successors, (1247), 1013 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1247 transitions. [2021-11-03 22:45:36,916 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1247 transitions. Word has length 61 [2021-11-03 22:45:36,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:36,916 INFO L470 AbstractCegarLoop]: Abstraction has 1014 states and 1247 transitions. [2021-11-03 22:45:36,917 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) [2021-11-03 22:45:36,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1247 transitions. [2021-11-03 22:45:36,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 22:45:36,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:36,918 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] [2021-11-03 22:45:36,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 22:45:36,919 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:45:36,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:36,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1544529348, now seen corresponding path program 1 times [2021-11-03 22:45:36,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:45:36,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890074084] [2021-11-03 22:45:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:36,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:45:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:38,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:45:38,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890074084] [2021-11-03 22:45:38,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890074084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:38,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:38,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:45:38,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578912341] [2021-11-03 22:45:38,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:38,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:45:38,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:45:38,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:45:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:45:38,569 INFO L87 Difference]: Start difference. First operand 1014 states and 1247 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:41,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:00,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:00,683 INFO L93 Difference]: Finished difference Result 1946 states and 2378 transitions. [2021-11-03 22:46:00,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 22:46:00,684 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-03 22:46:00,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:00,687 INFO L225 Difference]: With dead ends: 1946 [2021-11-03 22:46:00,687 INFO L226 Difference]: Without dead ends: 1517 [2021-11-03 22:46:00,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 3303.07ms TimeCoverageRelationStatistics Valid=442, Invalid=1538, Unknown=0, NotChecked=0, Total=1980 [2021-11-03 22:46:00,689 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2828 mSDsluCounter, 2956 mSDsCounter, 0 mSdLazyCounter, 5189 mSolverCounterSat, 148 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18287.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2828 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.23ms SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 5189 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19294.77ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:00,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2828 Valid, 0 Invalid, 5338 Unknown, 0 Unchecked, 64.23ms Time], IncrementalHoareTripleChecker [148 Valid, 5189 Invalid, 1 Unknown, 0 Unchecked, 19294.77ms Time] [2021-11-03 22:46:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-11-03 22:46:00,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1020. [2021-11-03 22:46:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1006 states have (on average 1.2455268389662029) internal successors, (1253), 1019 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:00,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1253 transitions. [2021-11-03 22:46:00,726 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1253 transitions. Word has length 63 [2021-11-03 22:46:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:00,726 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1253 transitions. [2021-11-03 22:46:00,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1253 transitions. [2021-11-03 22:46:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 22:46:00,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:00,728 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] [2021-11-03 22:46:00,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 22:46:00,728 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:46:00,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:00,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1782092460, now seen corresponding path program 1 times [2021-11-03 22:46:00,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:00,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752524995] [2021-11-03 22:46:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:00,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:01,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:01,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752524995] [2021-11-03 22:46:01,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752524995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:01,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:01,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:46:01,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184791302] [2021-11-03 22:46:01,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:01,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:46:01,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:01,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:46:01,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:46:01,335 INFO L87 Difference]: Start difference. First operand 1020 states and 1253 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:04,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:12,918 INFO L93 Difference]: Finished difference Result 2326 states and 2849 transitions. [2021-11-03 22:46:12,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:46:12,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-03 22:46:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:12,922 INFO L225 Difference]: With dead ends: 2326 [2021-11-03 22:46:12,922 INFO L226 Difference]: Without dead ends: 1323 [2021-11-03 22:46:12,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 269.27ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:46:12,924 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 254 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 2560 mSolverCounterSat, 105 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10697.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.89ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2560 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11306.21ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:12,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 0 Invalid, 2666 Unknown, 0 Unchecked, 21.89ms Time], IncrementalHoareTripleChecker [105 Valid, 2560 Invalid, 1 Unknown, 0 Unchecked, 11306.21ms Time] [2021-11-03 22:46:12,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2021-11-03 22:46:12,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1020. [2021-11-03 22:46:12,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1006 states have (on average 1.228628230616302) internal successors, (1236), 1019 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1236 transitions. [2021-11-03 22:46:12,965 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1236 transitions. Word has length 63 [2021-11-03 22:46:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:12,965 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1236 transitions. [2021-11-03 22:46:12,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1236 transitions. [2021-11-03 22:46:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 22:46:12,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:12,967 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] [2021-11-03 22:46:12,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 22:46:12,967 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:46:12,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2016600297, now seen corresponding path program 1 times [2021-11-03 22:46:12,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:12,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013190275] [2021-11-03 22:46:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:12,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:13,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:13,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013190275] [2021-11-03 22:46:13,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013190275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:13,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:13,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:46:13,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22318299] [2021-11-03 22:46:13,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:13,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:46:13,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:13,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:46:13,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:46:13,279 INFO L87 Difference]: Start difference. First operand 1020 states and 1236 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:15,348 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 [] [2021-11-03 22:46:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:20,194 INFO L93 Difference]: Finished difference Result 2054 states and 2515 transitions. [2021-11-03 22:46:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:46:20,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-03 22:46:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:20,198 INFO L225 Difference]: With dead ends: 2054 [2021-11-03 22:46:20,198 INFO L226 Difference]: Without dead ends: 1152 [2021-11-03 22:46:20,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 105.06ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:46:20,200 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 294 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 76 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6430.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.35ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6776.48ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:20,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 0 Invalid, 1485 Unknown, 0 Unchecked, 12.35ms Time], IncrementalHoareTripleChecker [76 Valid, 1408 Invalid, 1 Unknown, 0 Unchecked, 6776.48ms Time] [2021-11-03 22:46:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-11-03 22:46:20,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1020. [2021-11-03 22:46:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1006 states have (on average 1.1888667992047715) internal successors, (1196), 1019 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1196 transitions. [2021-11-03 22:46:20,236 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1196 transitions. Word has length 69 [2021-11-03 22:46:20,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:20,237 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1196 transitions. [2021-11-03 22:46:20,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1196 transitions. [2021-11-03 22:46:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 22:46:20,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:20,238 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] [2021-11-03 22:46:20,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 22:46:20,238 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:46:20,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1473820389, now seen corresponding path program 1 times [2021-11-03 22:46:20,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:20,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987180687] [2021-11-03 22:46:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:20,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:22,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:22,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987180687] [2021-11-03 22:46:22,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987180687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:22,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:22,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:46:22,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887902875] [2021-11-03 22:46:22,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:22,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:46:22,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:46:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:46:22,948 INFO L87 Difference]: Start difference. First operand 1020 states and 1196 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:25,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:36,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:36,494 INFO L93 Difference]: Finished difference Result 1998 states and 2338 transitions. [2021-11-03 22:46:36,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:46:36,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-03 22:46:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:36,498 INFO L225 Difference]: With dead ends: 1998 [2021-11-03 22:46:36,498 INFO L226 Difference]: Without dead ends: 1092 [2021-11-03 22:46:36,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 780.45ms TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:46:36,500 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 726 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 3267 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12269.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.65ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3267 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12978.93ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:36,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 0 Invalid, 3272 Unknown, 0 Unchecked, 31.65ms Time], IncrementalHoareTripleChecker [4 Valid, 3267 Invalid, 1 Unknown, 0 Unchecked, 12978.93ms Time] [2021-11-03 22:46:36,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2021-11-03 22:46:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1024. [2021-11-03 22:46:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 1010 states have (on average 1.188118811881188) internal successors, (1200), 1023 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1200 transitions. [2021-11-03 22:46:36,538 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1200 transitions. Word has length 69 [2021-11-03 22:46:36,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:36,538 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 1200 transitions. [2021-11-03 22:46:36,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:36,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1200 transitions. [2021-11-03 22:46:36,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 22:46:36,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:36,540 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] [2021-11-03 22:46:36,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 22:46:36,541 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:46:36,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash -553337652, now seen corresponding path program 1 times [2021-11-03 22:46:36,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:36,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479991906] [2021-11-03 22:46:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:36,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:37,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:37,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479991906] [2021-11-03 22:46:37,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479991906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:37,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:37,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 22:46:37,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281929239] [2021-11-03 22:46:37,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:37,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:46:37,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:46:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:46:37,363 INFO L87 Difference]: Start difference. First operand 1024 states and 1200 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2021-11-03 22:46:40,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:55,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:55,322 INFO L93 Difference]: Finished difference Result 1727 states and 1985 transitions. [2021-11-03 22:46:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 22:46:55,323 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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 [2021-11-03 22:46:55,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:55,326 INFO L225 Difference]: With dead ends: 1727 [2021-11-03 22:46:55,326 INFO L226 Difference]: Without dead ends: 1365 [2021-11-03 22:46:55,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1600.41ms TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2021-11-03 22:46:55,328 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2068 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 4235 mSolverCounterSat, 109 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15580.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.16ms SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 4235 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16476.82ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:55,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2068 Valid, 0 Invalid, 4345 Unknown, 0 Unchecked, 50.16ms Time], IncrementalHoareTripleChecker [109 Valid, 4235 Invalid, 1 Unknown, 0 Unchecked, 16476.82ms Time] [2021-11-03 22:46:55,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-11-03 22:46:55,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1054. [2021-11-03 22:46:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1040 states have (on average 1.1875) internal successors, (1235), 1053 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1235 transitions. [2021-11-03 22:46:55,381 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1235 transitions. Word has length 72 [2021-11-03 22:46:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:55,381 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1235 transitions. [2021-11-03 22:46:55,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2021-11-03 22:46:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1235 transitions. [2021-11-03 22:46:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 22:46:55,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:55,383 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] [2021-11-03 22:46:55,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 22:46:55,383 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:46:55,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:55,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1511080838, now seen corresponding path program 1 times [2021-11-03 22:46:55,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:55,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231673006] [2021-11-03 22:46:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:55,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:00,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:00,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231673006] [2021-11-03 22:47:00,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231673006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:00,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:00,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:47:00,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896654554] [2021-11-03 22:47:00,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:00,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:47:00,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:00,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:47:00,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:47:00,769 INFO L87 Difference]: Start difference. First operand 1054 states and 1235 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 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) [2021-11-03 22:47:03,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:23,454 INFO L93 Difference]: Finished difference Result 1823 states and 2118 transitions. [2021-11-03 22:47:23,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 22:47:23,455 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 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 [2021-11-03 22:47:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:23,458 INFO L225 Difference]: With dead ends: 1823 [2021-11-03 22:47:23,458 INFO L226 Difference]: Without dead ends: 1508 [2021-11-03 22:47:23,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2256.29ms TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2021-11-03 22:47:23,459 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1667 mSDsluCounter, 3289 mSDsCounter, 0 mSdLazyCounter, 5416 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19836.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.57ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5416 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21018.93ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:23,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1667 Valid, 0 Invalid, 5445 Unknown, 0 Unchecked, 68.57ms Time], IncrementalHoareTripleChecker [28 Valid, 5416 Invalid, 1 Unknown, 0 Unchecked, 21018.93ms Time] [2021-11-03 22:47:23,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-11-03 22:47:23,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1181. [2021-11-03 22:47:23,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1167 states have (on average 1.19280205655527) internal successors, (1392), 1180 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1392 transitions. [2021-11-03 22:47:23,498 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1392 transitions. Word has length 72 [2021-11-03 22:47:23,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:23,498 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1392 transitions. [2021-11-03 22:47:23,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 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) [2021-11-03 22:47:23,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1392 transitions. [2021-11-03 22:47:23,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 22:47:23,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:23,500 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] [2021-11-03 22:47:23,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 22:47:23,500 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:47:23,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash 481721540, now seen corresponding path program 1 times [2021-11-03 22:47:23,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:23,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73153318] [2021-11-03 22:47:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:23,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:23,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:23,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73153318] [2021-11-03 22:47:23,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73153318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:23,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:23,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:47:23,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888681664] [2021-11-03 22:47:23,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:23,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:47:23,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:23,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:47:23,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:47:23,698 INFO L87 Difference]: Start difference. First operand 1181 states and 1392 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2021-11-03 22:47:26,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:30,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:30,637 INFO L93 Difference]: Finished difference Result 2357 states and 2768 transitions. [2021-11-03 22:47:30,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:47:30,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 [2021-11-03 22:47:30,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:30,641 INFO L225 Difference]: With dead ends: 2357 [2021-11-03 22:47:30,641 INFO L226 Difference]: Without dead ends: 1283 [2021-11-03 22:47:30,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:47:30,643 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6413.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.90ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6823.62ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:30,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 1229 Unknown, 0 Unchecked, 8.90ms Time], IncrementalHoareTripleChecker [55 Valid, 1173 Invalid, 1 Unknown, 0 Unchecked, 6823.62ms Time] [2021-11-03 22:47:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-11-03 22:47:30,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1115. [2021-11-03 22:47:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1101 states have (on average 1.1662125340599454) internal successors, (1284), 1114 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1284 transitions. [2021-11-03 22:47:30,674 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1284 transitions. Word has length 72 [2021-11-03 22:47:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:30,674 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1284 transitions. [2021-11-03 22:47:30,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2021-11-03 22:47:30,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1284 transitions. [2021-11-03 22:47:30,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 22:47:30,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:30,676 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] [2021-11-03 22:47:30,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 22:47:30,676 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:47:30,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:30,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2013782192, now seen corresponding path program 1 times [2021-11-03 22:47:30,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:30,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913704161] [2021-11-03 22:47:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:30,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:31,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:31,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913704161] [2021-11-03 22:47:31,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913704161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:31,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:31,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:47:31,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708791317] [2021-11-03 22:47:31,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:31,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:47:31,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:31,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:47:31,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:47:31,159 INFO L87 Difference]: Start difference. First operand 1115 states and 1284 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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) [2021-11-03 22:47:34,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:44,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:44,995 INFO L93 Difference]: Finished difference Result 1907 states and 2195 transitions. [2021-11-03 22:47:44,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 22:47:44,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 [2021-11-03 22:47:44,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:44,999 INFO L225 Difference]: With dead ends: 1907 [2021-11-03 22:47:45,000 INFO L226 Difference]: Without dead ends: 1455 [2021-11-03 22:47:45,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 608.08ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:47:45,001 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 543 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 3299 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12566.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.82ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3299 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13268.82ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:45,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 0 Invalid, 3344 Unknown, 0 Unchecked, 32.82ms Time], IncrementalHoareTripleChecker [44 Valid, 3299 Invalid, 1 Unknown, 0 Unchecked, 13268.82ms Time] [2021-11-03 22:47:45,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-03 22:47:45,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1372. [2021-11-03 22:47:45,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1358 states have (on average 1.1686303387334316) internal successors, (1587), 1371 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:45,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1587 transitions. [2021-11-03 22:47:45,043 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1587 transitions. Word has length 73 [2021-11-03 22:47:45,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:45,044 INFO L470 AbstractCegarLoop]: Abstraction has 1372 states and 1587 transitions. [2021-11-03 22:47:45,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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) [2021-11-03 22:47:45,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1587 transitions. [2021-11-03 22:47:45,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 22:47:45,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:45,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:45,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 22:47:45,046 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:47:45,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:45,046 INFO L85 PathProgramCache]: Analyzing trace with hash 85125233, now seen corresponding path program 1 times [2021-11-03 22:47:45,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:45,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453538494] [2021-11-03 22:47:45,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:45,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:45,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:45,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453538494] [2021-11-03 22:47:45,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453538494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:45,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:45,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 22:47:45,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005019407] [2021-11-03 22:47:45,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:45,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:47:45,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:47:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:47:45,989 INFO L87 Difference]: Start difference. First operand 1372 states and 1587 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 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) [2021-11-03 22:47:48,047 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 [] [2021-11-03 22:48:03,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:03,059 INFO L93 Difference]: Finished difference Result 1699 states and 1916 transitions. [2021-11-03 22:48:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 22:48:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 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 [2021-11-03 22:48:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:03,063 INFO L225 Difference]: With dead ends: 1699 [2021-11-03 22:48:03,063 INFO L226 Difference]: Without dead ends: 1560 [2021-11-03 22:48:03,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1784.05ms TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2021-11-03 22:48:03,065 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1533 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 4147 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14698.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.12ms SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 4147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15481.23ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:03,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 0 Invalid, 4226 Unknown, 0 Unchecked, 47.12ms Time], IncrementalHoareTripleChecker [78 Valid, 4147 Invalid, 1 Unknown, 0 Unchecked, 15481.23ms Time] [2021-11-03 22:48:03,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-11-03 22:48:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1369. [2021-11-03 22:48:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1355 states have (on average 1.1682656826568265) internal successors, (1583), 1368 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1583 transitions. [2021-11-03 22:48:03,104 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1583 transitions. Word has length 74 [2021-11-03 22:48:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:03,104 INFO L470 AbstractCegarLoop]: Abstraction has 1369 states and 1583 transitions. [2021-11-03 22:48:03,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 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) [2021-11-03 22:48:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1583 transitions. [2021-11-03 22:48:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:48:03,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:03,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:48:03,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 22:48:03,106 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:48:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:03,106 INFO L85 PathProgramCache]: Analyzing trace with hash -924815937, now seen corresponding path program 1 times [2021-11-03 22:48:03,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:03,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025976604] [2021-11-03 22:48:03,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:03,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:03,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:03,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025976604] [2021-11-03 22:48:03,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025976604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:03,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:03,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:48:03,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428928318] [2021-11-03 22:48:03,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:03,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:48:03,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:48:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:48:03,852 INFO L87 Difference]: Start difference. First operand 1369 states and 1583 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) [2021-11-03 22:48:06,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:18,745 INFO L93 Difference]: Finished difference Result 2366 states and 2676 transitions. [2021-11-03 22:48:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 22:48:18,746 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 [2021-11-03 22:48:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:18,751 INFO L225 Difference]: With dead ends: 2366 [2021-11-03 22:48:18,751 INFO L226 Difference]: Without dead ends: 1827 [2021-11-03 22:48:18,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 936.74ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-11-03 22:48:18,753 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2166 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 3556 mSolverCounterSat, 76 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13238.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.52ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3556 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14044.31ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:18,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2166 Valid, 0 Invalid, 3633 Unknown, 0 Unchecked, 44.52ms Time], IncrementalHoareTripleChecker [76 Valid, 3556 Invalid, 1 Unknown, 0 Unchecked, 14044.31ms Time] [2021-11-03 22:48:18,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2021-11-03 22:48:18,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1369. [2021-11-03 22:48:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1355 states have (on average 1.166789667896679) internal successors, (1581), 1368 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:18,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1581 transitions. [2021-11-03 22:48:18,803 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1581 transitions. Word has length 75 [2021-11-03 22:48:18,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:18,803 INFO L470 AbstractCegarLoop]: Abstraction has 1369 states and 1581 transitions. [2021-11-03 22:48:18,803 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) [2021-11-03 22:48:18,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1581 transitions. [2021-11-03 22:48:18,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:48:18,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:18,805 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] [2021-11-03 22:48:18,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 22:48:18,806 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:48:18,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:18,806 INFO L85 PathProgramCache]: Analyzing trace with hash -333697165, now seen corresponding path program 1 times [2021-11-03 22:48:18,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:18,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216076074] [2021-11-03 22:48:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:18,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:19,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:19,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216076074] [2021-11-03 22:48:19,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216076074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:19,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:19,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:48:19,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153112877] [2021-11-03 22:48:19,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:19,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:48:19,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:19,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:48:19,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:48:19,162 INFO L87 Difference]: Start difference. First operand 1369 states and 1581 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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) [2021-11-03 22:48:22,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:28,633 INFO L93 Difference]: Finished difference Result 2003 states and 2293 transitions. [2021-11-03 22:48:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:48:28,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 [2021-11-03 22:48:28,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:28,638 INFO L225 Difference]: With dead ends: 2003 [2021-11-03 22:48:28,638 INFO L226 Difference]: Without dead ends: 1469 [2021-11-03 22:48:28,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 283.41ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:48:28,640 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 793 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8620.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.14ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9173.93ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:28,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 0 Invalid, 1852 Unknown, 0 Unchecked, 19.14ms Time], IncrementalHoareTripleChecker [21 Valid, 1830 Invalid, 1 Unknown, 0 Unchecked, 9173.93ms Time] [2021-11-03 22:48:28,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-03 22:48:28,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1369. [2021-11-03 22:48:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1355 states have (on average 1.1653136531365313) internal successors, (1579), 1368 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:28,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1579 transitions. [2021-11-03 22:48:28,714 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1579 transitions. Word has length 75 [2021-11-03 22:48:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:28,714 INFO L470 AbstractCegarLoop]: Abstraction has 1369 states and 1579 transitions. [2021-11-03 22:48:28,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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) [2021-11-03 22:48:28,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1579 transitions. [2021-11-03 22:48:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:48:28,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:28,716 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] [2021-11-03 22:48:28,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 22:48:28,716 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:48:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:28,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1418160450, now seen corresponding path program 1 times [2021-11-03 22:48:28,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:28,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114178536] [2021-11-03 22:48:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:28,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:29,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:29,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114178536] [2021-11-03 22:48:29,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114178536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:29,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:29,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:48:29,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576611197] [2021-11-03 22:48:29,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:29,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:48:29,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:29,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:48:29,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:48:29,464 INFO L87 Difference]: Start difference. First operand 1369 states and 1579 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2021-11-03 22:48:31,533 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 [] [2021-11-03 22:48:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:44,546 INFO L93 Difference]: Finished difference Result 1502 states and 1706 transitions. [2021-11-03 22:48:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:48:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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 [2021-11-03 22:48:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:44,550 INFO L225 Difference]: With dead ends: 1502 [2021-11-03 22:48:44,550 INFO L226 Difference]: Without dead ends: 1500 [2021-11-03 22:48:44,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 917.54ms TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:48:44,551 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 728 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 3858 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13370.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.53ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3858 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14288.21ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:44,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 0 Invalid, 3904 Unknown, 0 Unchecked, 39.53ms Time], IncrementalHoareTripleChecker [45 Valid, 3858 Invalid, 1 Unknown, 0 Unchecked, 14288.21ms Time] [2021-11-03 22:48:44,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-11-03 22:48:44,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1327. [2021-11-03 22:48:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1313 states have (on average 1.169078446306169) internal successors, (1535), 1326 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:44,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1535 transitions. [2021-11-03 22:48:44,593 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1535 transitions. Word has length 75 [2021-11-03 22:48:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:44,593 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1535 transitions. [2021-11-03 22:48:44,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2021-11-03 22:48:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1535 transitions. [2021-11-03 22:48:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:48:44,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:44,595 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] [2021-11-03 22:48:44,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 22:48:44,595 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:48:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash -211602989, now seen corresponding path program 1 times [2021-11-03 22:48:44,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:44,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947120792] [2021-11-03 22:48:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:44,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:46,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:46,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947120792] [2021-11-03 22:48:46,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947120792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:46,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:46,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:48:46,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992116496] [2021-11-03 22:48:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:46,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:48:46,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:46,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:48:46,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:48:46,114 INFO L87 Difference]: Start difference. First operand 1327 states and 1535 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) [2021-11-03 22:48:49,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:13,183 INFO L93 Difference]: Finished difference Result 3071 states and 3477 transitions. [2021-11-03 22:49:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:49:13,183 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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 [2021-11-03 22:49:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:13,187 INFO L225 Difference]: With dead ends: 3071 [2021-11-03 22:49:13,187 INFO L226 Difference]: Without dead ends: 2646 [2021-11-03 22:49:13,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2722.03ms TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-11-03 22:49:13,188 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3749 mSDsluCounter, 4205 mSDsCounter, 0 mSdLazyCounter, 6692 mSolverCounterSat, 83 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23018.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3749 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 85.12ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 6692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24580.57ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:13,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3749 Valid, 0 Invalid, 6776 Unknown, 0 Unchecked, 85.12ms Time], IncrementalHoareTripleChecker [83 Valid, 6692 Invalid, 1 Unknown, 0 Unchecked, 24580.57ms Time] [2021-11-03 22:49:13,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2021-11-03 22:49:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 1325. [2021-11-03 22:49:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1311 states have (on average 1.1685736079328757) internal successors, (1532), 1324 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1532 transitions. [2021-11-03 22:49:13,227 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1532 transitions. Word has length 75 [2021-11-03 22:49:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:13,227 INFO L470 AbstractCegarLoop]: Abstraction has 1325 states and 1532 transitions. [2021-11-03 22:49:13,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) [2021-11-03 22:49:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1532 transitions. [2021-11-03 22:49:13,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:49:13,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:13,228 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] [2021-11-03 22:49:13,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 22:49:13,228 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:49:13,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash 662724767, now seen corresponding path program 1 times [2021-11-03 22:49:13,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:13,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947727290] [2021-11-03 22:49:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:13,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:14,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:14,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947727290] [2021-11-03 22:49:14,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947727290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:14,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:14,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:49:14,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274962329] [2021-11-03 22:49:14,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:14,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:49:14,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:49:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:49:14,590 INFO L87 Difference]: Start difference. First operand 1325 states and 1532 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) [2021-11-03 22:49:17,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:39,508 INFO L93 Difference]: Finished difference Result 2112 states and 2379 transitions. [2021-11-03 22:49:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 22:49:39,509 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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 [2021-11-03 22:49:39,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:39,523 INFO L225 Difference]: With dead ends: 2112 [2021-11-03 22:49:39,523 INFO L226 Difference]: Without dead ends: 1682 [2021-11-03 22:49:39,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2247.41ms TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:49:39,524 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1188 mSDsluCounter, 4035 mSDsCounter, 0 mSdLazyCounter, 6268 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21589.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.68ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 6268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23002.92ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:39,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1188 Valid, 0 Invalid, 6309 Unknown, 0 Unchecked, 66.68ms Time], IncrementalHoareTripleChecker [40 Valid, 6268 Invalid, 1 Unknown, 0 Unchecked, 23002.92ms Time] [2021-11-03 22:49:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-11-03 22:49:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1325. [2021-11-03 22:49:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1311 states have (on average 1.167810831426392) internal successors, (1531), 1324 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:39,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1531 transitions. [2021-11-03 22:49:39,563 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1531 transitions. Word has length 75 [2021-11-03 22:49:39,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:39,564 INFO L470 AbstractCegarLoop]: Abstraction has 1325 states and 1531 transitions. [2021-11-03 22:49:39,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) [2021-11-03 22:49:39,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1531 transitions. [2021-11-03 22:49:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 22:49:39,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:39,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:49:39,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 22:49:39,565 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:49:39,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:39,566 INFO L85 PathProgramCache]: Analyzing trace with hash 753054514, now seen corresponding path program 1 times [2021-11-03 22:49:39,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:39,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860493598] [2021-11-03 22:49:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:39,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:43,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:43,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860493598] [2021-11-03 22:49:43,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860493598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:43,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:43,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 22:49:43,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479528445] [2021-11-03 22:49:43,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:43,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:49:43,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:43,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:49:43,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:49:43,832 INFO L87 Difference]: Start difference. First operand 1325 states and 1531 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 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) [2021-11-03 22:49:45,878 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 [] [2021-11-03 22:49:57,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:57,215 INFO L93 Difference]: Finished difference Result 2167 states and 2529 transitions. [2021-11-03 22:49:57,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:49:57,216 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 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 [2021-11-03 22:49:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:57,218 INFO L225 Difference]: With dead ends: 2167 [2021-11-03 22:49:57,218 INFO L226 Difference]: Without dead ends: 1410 [2021-11-03 22:49:57,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1335.25ms TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2021-11-03 22:49:57,220 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1062 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 3255 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11402.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.88ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3255 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12405.61ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:57,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 0 Invalid, 3310 Unknown, 0 Unchecked, 33.88ms Time], IncrementalHoareTripleChecker [54 Valid, 3255 Invalid, 1 Unknown, 0 Unchecked, 12405.61ms Time] [2021-11-03 22:49:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-11-03 22:49:57,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1325. [2021-11-03 22:49:57,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1311 states have (on average 1.1586575133485888) internal successors, (1519), 1324 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1519 transitions. [2021-11-03 22:49:57,273 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1519 transitions. Word has length 78 [2021-11-03 22:49:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:57,274 INFO L470 AbstractCegarLoop]: Abstraction has 1325 states and 1519 transitions. [2021-11-03 22:49:57,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 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) [2021-11-03 22:49:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1519 transitions. [2021-11-03 22:49:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 22:49:57,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:57,275 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] [2021-11-03 22:49:57,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 22:49:57,275 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:49:57,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1433112884, now seen corresponding path program 1 times [2021-11-03 22:49:57,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:57,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885867456] [2021-11-03 22:49:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:57,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:57,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:57,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885867456] [2021-11-03 22:49:57,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885867456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:57,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:57,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:49:57,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106637694] [2021-11-03 22:49:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:57,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:49:57,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:57,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:49:57,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:49:57,751 INFO L87 Difference]: Start difference. First operand 1325 states and 1519 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2021-11-03 22:50:01,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:07,024 INFO L93 Difference]: Finished difference Result 2111 states and 2451 transitions. [2021-11-03 22:50:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:50:07,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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 [2021-11-03 22:50:07,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:07,026 INFO L225 Difference]: With dead ends: 2111 [2021-11-03 22:50:07,026 INFO L226 Difference]: Without dead ends: 1350 [2021-11-03 22:50:07,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 245.04ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:50:07,028 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 329 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8442.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.86ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9115.59ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:07,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 0 Invalid, 2036 Unknown, 0 Unchecked, 14.86ms Time], IncrementalHoareTripleChecker [30 Valid, 2005 Invalid, 1 Unknown, 0 Unchecked, 9115.59ms Time] [2021-11-03 22:50:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2021-11-03 22:50:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1301. [2021-11-03 22:50:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1287 states have (on average 1.1522921522921523) internal successors, (1483), 1300 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1483 transitions. [2021-11-03 22:50:07,084 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1483 transitions. Word has length 78 [2021-11-03 22:50:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:07,084 INFO L470 AbstractCegarLoop]: Abstraction has 1301 states and 1483 transitions. [2021-11-03 22:50:07,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2021-11-03 22:50:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1483 transitions. [2021-11-03 22:50:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 22:50:07,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:07,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:50:07,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 22:50:07,086 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:50:07,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:07,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1574198113, now seen corresponding path program 1 times [2021-11-03 22:50:07,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:07,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537257521] [2021-11-03 22:50:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:07,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:07,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:07,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537257521] [2021-11-03 22:50:07,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537257521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:07,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:07,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:50:07,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387187150] [2021-11-03 22:50:07,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:07,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:50:07,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:07,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:50:07,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:50:07,646 INFO L87 Difference]: Start difference. First operand 1301 states and 1483 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) [2021-11-03 22:50:09,884 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 [] [2021-11-03 22:50:22,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:22,844 INFO L93 Difference]: Finished difference Result 2162 states and 2467 transitions. [2021-11-03 22:50:22,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:50:22,845 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 [2021-11-03 22:50:22,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:22,847 INFO L225 Difference]: With dead ends: 2162 [2021-11-03 22:50:22,847 INFO L226 Difference]: Without dead ends: 1713 [2021-11-03 22:50:22,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 823.53ms TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:50:22,848 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 644 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 4215 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13635.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.61ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14455.27ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:22,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 0 Invalid, 4263 Unknown, 0 Unchecked, 35.61ms Time], IncrementalHoareTripleChecker [47 Valid, 4215 Invalid, 1 Unknown, 0 Unchecked, 14455.27ms Time] [2021-11-03 22:50:22,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-11-03 22:50:22,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1303. [2021-11-03 22:50:22,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1289 states have (on average 1.1528316524437547) internal successors, (1486), 1302 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1486 transitions. [2021-11-03 22:50:22,885 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1486 transitions. Word has length 79 [2021-11-03 22:50:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:22,885 INFO L470 AbstractCegarLoop]: Abstraction has 1303 states and 1486 transitions. [2021-11-03 22:50:22,885 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) [2021-11-03 22:50:22,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1486 transitions. [2021-11-03 22:50:22,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 22:50:22,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:22,886 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] [2021-11-03 22:50:22,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 22:50:22,886 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:50:22,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:22,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1766268189, now seen corresponding path program 1 times [2021-11-03 22:50:22,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:22,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176428380] [2021-11-03 22:50:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:22,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:24,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:24,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176428380] [2021-11-03 22:50:24,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176428380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:24,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:24,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 22:50:24,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002324710] [2021-11-03 22:50:24,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:24,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 22:50:24,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:24,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 22:50:24,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:50:24,946 INFO L87 Difference]: Start difference. First operand 1303 states and 1486 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) [2021-11-03 22:50:28,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:45,778 INFO L93 Difference]: Finished difference Result 2048 states and 2290 transitions. [2021-11-03 22:50:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 22:50:45,778 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 [2021-11-03 22:50:45,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:45,781 INFO L225 Difference]: With dead ends: 2048 [2021-11-03 22:50:45,781 INFO L226 Difference]: Without dead ends: 1912 [2021-11-03 22:50:45,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 4067.57ms TimeCoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 22:50:45,782 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3375 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 4716 mSolverCounterSat, 142 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16326.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3375 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.37ms SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 4716 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17453.56ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:45,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3375 Valid, 0 Invalid, 4859 Unknown, 0 Unchecked, 52.37ms Time], IncrementalHoareTripleChecker [142 Valid, 4716 Invalid, 1 Unknown, 0 Unchecked, 17453.56ms Time] [2021-11-03 22:50:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2021-11-03 22:50:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1306. [2021-11-03 22:50:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1292 states have (on average 1.1524767801857585) internal successors, (1489), 1305 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1489 transitions. [2021-11-03 22:50:45,837 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1489 transitions. Word has length 80 [2021-11-03 22:50:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:45,838 INFO L470 AbstractCegarLoop]: Abstraction has 1306 states and 1489 transitions. [2021-11-03 22:50:45,838 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) [2021-11-03 22:50:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1489 transitions. [2021-11-03 22:50:45,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 22:50:45,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:45,839 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] [2021-11-03 22:50:45,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 22:50:45,839 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:50:45,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:45,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1856337173, now seen corresponding path program 1 times [2021-11-03 22:50:45,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:45,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406191716] [2021-11-03 22:50:45,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:45,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:46,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:46,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406191716] [2021-11-03 22:50:46,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406191716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:46,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:46,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 22:50:46,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415866583] [2021-11-03 22:50:46,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:46,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:50:46,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:46,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:50:46,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:50:46,688 INFO L87 Difference]: Start difference. First operand 1306 states and 1489 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 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) [2021-11-03 22:50:48,751 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 [] [2021-11-03 22:51:00,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:00,791 INFO L93 Difference]: Finished difference Result 2012 states and 2299 transitions. [2021-11-03 22:51:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 22:51:00,792 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 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 [2021-11-03 22:51:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:00,794 INFO L225 Difference]: With dead ends: 2012 [2021-11-03 22:51:00,795 INFO L226 Difference]: Without dead ends: 1992 [2021-11-03 22:51:00,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1607.61ms TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2021-11-03 22:51:00,796 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 915 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 3705 mSolverCounterSat, 530 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11927.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.83ms SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 3705 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12733.26ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:00,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 0 Invalid, 4236 Unknown, 0 Unchecked, 29.83ms Time], IncrementalHoareTripleChecker [530 Valid, 3705 Invalid, 1 Unknown, 0 Unchecked, 12733.26ms Time] [2021-11-03 22:51:00,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-11-03 22:51:00,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1345. [2021-11-03 22:51:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1335 states have (on average 1.1385767790262171) internal successors, (1520), 1344 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1520 transitions. [2021-11-03 22:51:00,843 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1520 transitions. Word has length 80 [2021-11-03 22:51:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:00,843 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 1520 transitions. [2021-11-03 22:51:00,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 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) [2021-11-03 22:51:00,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1520 transitions. [2021-11-03 22:51:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 22:51:00,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:00,844 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] [2021-11-03 22:51:00,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 22:51:00,844 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:51:00,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:00,845 INFO L85 PathProgramCache]: Analyzing trace with hash -437468006, now seen corresponding path program 1 times [2021-11-03 22:51:00,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:00,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308967114] [2021-11-03 22:51:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:00,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:01,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:01,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308967114] [2021-11-03 22:51:01,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308967114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:01,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:01,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:51:01,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175488116] [2021-11-03 22:51:01,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:01,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:51:01,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:51:01,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:51:01,186 INFO L87 Difference]: Start difference. First operand 1345 states and 1520 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:04,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:10,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:10,019 INFO L93 Difference]: Finished difference Result 1884 states and 2131 transitions. [2021-11-03 22:51:10,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:51:10,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 22:51:10,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:10,022 INFO L225 Difference]: With dead ends: 1884 [2021-11-03 22:51:10,022 INFO L226 Difference]: Without dead ends: 1482 [2021-11-03 22:51:10,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 360.73ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:51:10,023 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 646 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 72 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7806.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.31ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8477.91ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:10,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 0 Invalid, 1703 Unknown, 0 Unchecked, 16.31ms Time], IncrementalHoareTripleChecker [72 Valid, 1630 Invalid, 1 Unknown, 0 Unchecked, 8477.91ms Time] [2021-11-03 22:51:10,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-11-03 22:51:10,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1378. [2021-11-03 22:51:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1368 states have (on average 1.135233918128655) internal successors, (1553), 1377 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1553 transitions. [2021-11-03 22:51:10,087 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1553 transitions. Word has length 82 [2021-11-03 22:51:10,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:10,087 INFO L470 AbstractCegarLoop]: Abstraction has 1378 states and 1553 transitions. [2021-11-03 22:51:10,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:10,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1553 transitions. [2021-11-03 22:51:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 22:51:10,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:10,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:51:10,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 22:51:10,088 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:51:10,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:10,089 INFO L85 PathProgramCache]: Analyzing trace with hash -591201620, now seen corresponding path program 1 times [2021-11-03 22:51:10,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:10,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670818884] [2021-11-03 22:51:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:10,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:10,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:10,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670818884] [2021-11-03 22:51:10,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670818884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:10,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:10,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:51:10,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737311793] [2021-11-03 22:51:10,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:10,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:51:10,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:10,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:51:10,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:51:10,939 INFO L87 Difference]: Start difference. First operand 1378 states and 1553 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:14,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:23,423 INFO L93 Difference]: Finished difference Result 1537 states and 1717 transitions. [2021-11-03 22:51:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:51:23,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-03 22:51:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:23,426 INFO L225 Difference]: With dead ends: 1537 [2021-11-03 22:51:23,426 INFO L226 Difference]: Without dead ends: 1535 [2021-11-03 22:51:23,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1093.81ms TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:51:23,427 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 516 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10785.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.86ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11592.36ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:23,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 0 Invalid, 2696 Unknown, 0 Unchecked, 25.86ms Time], IncrementalHoareTripleChecker [40 Valid, 2655 Invalid, 1 Unknown, 0 Unchecked, 11592.36ms Time] [2021-11-03 22:51:23,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-11-03 22:51:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1388. [2021-11-03 22:51:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1378 states have (on average 1.1357039187227866) internal successors, (1565), 1387 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1565 transitions. [2021-11-03 22:51:23,493 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1565 transitions. Word has length 84 [2021-11-03 22:51:23,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:23,494 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 1565 transitions. [2021-11-03 22:51:23,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1565 transitions. [2021-11-03 22:51:23,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:51:23,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:23,495 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] [2021-11-03 22:51:23,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 22:51:23,495 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:51:23,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:23,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1667191248, now seen corresponding path program 1 times [2021-11-03 22:51:23,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:23,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400951387] [2021-11-03 22:51:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:23,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:25,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:25,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400951387] [2021-11-03 22:51:25,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400951387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:25,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:25,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:51:25,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915760929] [2021-11-03 22:51:25,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:25,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:51:25,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:25,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:51:25,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:51:25,773 INFO L87 Difference]: Start difference. First operand 1388 states and 1565 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2021-11-03 22:51:28,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:36,323 INFO L93 Difference]: Finished difference Result 3172 states and 3563 transitions. [2021-11-03 22:51:36,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:51:36,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 [2021-11-03 22:51:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:36,330 INFO L225 Difference]: With dead ends: 3172 [2021-11-03 22:51:36,331 INFO L226 Difference]: Without dead ends: 2169 [2021-11-03 22:51:36,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 590.91ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:51:36,341 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1216 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9309.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.81ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10057.76ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:36,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 0 Invalid, 2388 Unknown, 0 Unchecked, 20.81ms Time], IncrementalHoareTripleChecker [6 Valid, 2381 Invalid, 1 Unknown, 0 Unchecked, 10057.76ms Time] [2021-11-03 22:51:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2021-11-03 22:51:36,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 1396. [2021-11-03 22:51:36,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1386 states have (on average 1.1349206349206349) internal successors, (1573), 1395 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:36,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1573 transitions. [2021-11-03 22:51:36,442 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1573 transitions. Word has length 85 [2021-11-03 22:51:36,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:36,442 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 1573 transitions. [2021-11-03 22:51:36,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2021-11-03 22:51:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1573 transitions. [2021-11-03 22:51:36,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:51:36,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:36,443 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] [2021-11-03 22:51:36,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 22:51:36,443 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:51:36,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1771414767, now seen corresponding path program 1 times [2021-11-03 22:51:36,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:36,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500945762] [2021-11-03 22:51:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:36,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:36,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:36,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500945762] [2021-11-03 22:51:36,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500945762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:36,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:36,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:51:36,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312916188] [2021-11-03 22:51:36,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:36,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:51:36,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:51:36,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:51:36,903 INFO L87 Difference]: Start difference. First operand 1396 states and 1573 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:38,954 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 [] [2021-11-03 22:51:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:45,862 INFO L93 Difference]: Finished difference Result 1990 states and 2240 transitions. [2021-11-03 22:51:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 22:51:45,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-03 22:51:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:45,865 INFO L225 Difference]: With dead ends: 1990 [2021-11-03 22:51:45,865 INFO L226 Difference]: Without dead ends: 1279 [2021-11-03 22:51:45,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 483.65ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:51:45,866 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 524 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7942.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.55ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8541.44ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:45,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 0 Invalid, 2199 Unknown, 0 Unchecked, 18.55ms Time], IncrementalHoareTripleChecker [46 Valid, 2152 Invalid, 1 Unknown, 0 Unchecked, 8541.44ms Time] [2021-11-03 22:51:45,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-11-03 22:51:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1211. [2021-11-03 22:51:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1201 states have (on average 1.1132389675270609) internal successors, (1337), 1210 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1337 transitions. [2021-11-03 22:51:45,947 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1337 transitions. Word has length 85 [2021-11-03 22:51:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:45,947 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 1337 transitions. [2021-11-03 22:51:45,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:45,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1337 transitions. [2021-11-03 22:51:45,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:51:45,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:45,948 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] [2021-11-03 22:51:45,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 22:51:45,949 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:51:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:45,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1871883389, now seen corresponding path program 1 times [2021-11-03 22:51:45,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:45,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716485620] [2021-11-03 22:51:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:45,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:48,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:48,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716485620] [2021-11-03 22:51:48,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716485620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:48,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:48,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:51:48,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291516928] [2021-11-03 22:51:48,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:48,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:51:48,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:51:48,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:51:48,761 INFO L87 Difference]: Start difference. First operand 1211 states and 1337 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2021-11-03 22:51:51,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:52:13,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:52:13,333 INFO L93 Difference]: Finished difference Result 2534 states and 2762 transitions. [2021-11-03 22:52:13,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 22:52:13,333 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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 [2021-11-03 22:52:13,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:52:13,337 INFO L225 Difference]: With dead ends: 2534 [2021-11-03 22:52:13,337 INFO L226 Difference]: Without dead ends: 2155 [2021-11-03 22:52:13,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 3612.86ms TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2021-11-03 22:52:13,338 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1621 mSDsluCounter, 3689 mSDsCounter, 0 mSdLazyCounter, 6369 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19949.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.79ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 6369 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21220.90ms IncrementalHoareTripleChecker+Time [2021-11-03 22:52:13,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1621 Valid, 0 Invalid, 6403 Unknown, 0 Unchecked, 54.79ms Time], IncrementalHoareTripleChecker [33 Valid, 6369 Invalid, 1 Unknown, 0 Unchecked, 21220.90ms Time] [2021-11-03 22:52:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2021-11-03 22:52:13,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 1105. [2021-11-03 22:52:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1095 states have (on average 1.11324200913242) internal successors, (1219), 1104 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1219 transitions. [2021-11-03 22:52:13,398 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1219 transitions. Word has length 88 [2021-11-03 22:52:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:52:13,398 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 1219 transitions. [2021-11-03 22:52:13,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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) [2021-11-03 22:52:13,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1219 transitions. [2021-11-03 22:52:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 22:52:13,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:52:13,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:52:13,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 22:52:13,399 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:52:13,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:52:13,400 INFO L85 PathProgramCache]: Analyzing trace with hash 84424945, now seen corresponding path program 1 times [2021-11-03 22:52:13,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:52:13,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188921078] [2021-11-03 22:52:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:52:13,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:52:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:52:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:52:13,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:52:13,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188921078] [2021-11-03 22:52:13,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188921078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:52:13,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:52:13,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:52:13,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110958640] [2021-11-03 22:52:13,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:52:13,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:52:13,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:52:13,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:52:13,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:52:13,601 INFO L87 Difference]: Start difference. First operand 1105 states and 1219 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:16,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:52:20,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:52:20,092 INFO L93 Difference]: Finished difference Result 1747 states and 1940 transitions. [2021-11-03 22:52:20,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:52:20,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-03 22:52:20,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:52:20,094 INFO L225 Difference]: With dead ends: 1747 [2021-11-03 22:52:20,094 INFO L226 Difference]: Without dead ends: 1242 [2021-11-03 22:52:20,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:52:20,095 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5831.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.37ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6378.12ms IncrementalHoareTripleChecker+Time [2021-11-03 22:52:20,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 1043 Unknown, 0 Unchecked, 6.37ms Time], IncrementalHoareTripleChecker [2 Valid, 1040 Invalid, 1 Unknown, 0 Unchecked, 6378.12ms Time] [2021-11-03 22:52:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-11-03 22:52:20,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1115. [2021-11-03 22:52:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1105 states have (on average 1.1113122171945702) internal successors, (1228), 1114 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1228 transitions. [2021-11-03 22:52:20,154 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1228 transitions. Word has length 90 [2021-11-03 22:52:20,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:52:20,155 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1228 transitions. [2021-11-03 22:52:20,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:20,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1228 transitions. [2021-11-03 22:52:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 22:52:20,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:52:20,156 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] [2021-11-03 22:52:20,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-03 22:52:20,156 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:52:20,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:52:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1653713986, now seen corresponding path program 1 times [2021-11-03 22:52:20,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:52:20,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684386452] [2021-11-03 22:52:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:52:20,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:52:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:52:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:52:24,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:52:24,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684386452] [2021-11-03 22:52:24,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684386452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:52:24,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:52:24,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 22:52:24,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360243781] [2021-11-03 22:52:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:52:24,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 22:52:24,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:52:24,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 22:52:24,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:52:24,354 INFO L87 Difference]: Start difference. First operand 1115 states and 1228 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 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) [2021-11-03 22:52:27,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:53:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:02,953 INFO L93 Difference]: Finished difference Result 2926 states and 3191 transitions. [2021-11-03 22:53:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 22:53:02,954 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 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 [2021-11-03 22:53:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:02,956 INFO L225 Difference]: With dead ends: 2926 [2021-11-03 22:53:02,956 INFO L226 Difference]: Without dead ends: 2579 [2021-11-03 22:53:02,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 5123.99ms TimeCoverageRelationStatistics Valid=402, Invalid=1320, Unknown=0, NotChecked=0, Total=1722 [2021-11-03 22:53:02,957 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3304 mSDsluCounter, 7871 mSDsCounter, 0 mSdLazyCounter, 11176 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32194.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3304 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 104.53ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 11176 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34045.30ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:02,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3304 Valid, 0 Invalid, 11254 Unknown, 0 Unchecked, 104.53ms Time], IncrementalHoareTripleChecker [77 Valid, 11176 Invalid, 1 Unknown, 0 Unchecked, 34045.30ms Time] [2021-11-03 22:53:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2021-11-03 22:53:03,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 1561. [2021-11-03 22:53:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1551 states have (on average 1.1115409413281754) internal successors, (1724), 1560 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 1724 transitions. [2021-11-03 22:53:03,024 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 1724 transitions. Word has length 91 [2021-11-03 22:53:03,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:03,024 INFO L470 AbstractCegarLoop]: Abstraction has 1561 states and 1724 transitions. [2021-11-03 22:53:03,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 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) [2021-11-03 22:53:03,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 1724 transitions. [2021-11-03 22:53:03,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 22:53:03,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:03,026 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] [2021-11-03 22:53:03,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-03 22:53:03,026 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:53:03,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:03,026 INFO L85 PathProgramCache]: Analyzing trace with hash -973655616, now seen corresponding path program 1 times [2021-11-03 22:53:03,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:03,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144235218] [2021-11-03 22:53:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:03,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:03,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:03,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144235218] [2021-11-03 22:53:03,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144235218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:03,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:03,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:53:03,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020882277] [2021-11-03 22:53:03,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:03,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:53:03,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:03,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:53:03,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:53:03,430 INFO L87 Difference]: Start difference. First operand 1561 states and 1724 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2021-11-03 22:53:05,473 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 [] [2021-11-03 22:53:11,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:11,119 INFO L93 Difference]: Finished difference Result 2556 states and 2851 transitions. [2021-11-03 22:53:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:53:11,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 [2021-11-03 22:53:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:11,122 INFO L225 Difference]: With dead ends: 2556 [2021-11-03 22:53:11,122 INFO L226 Difference]: Without dead ends: 1601 [2021-11-03 22:53:11,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 204.53ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:53:11,123 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 606 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6934.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.95ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7502.44ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:11,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 0 Invalid, 1750 Unknown, 0 Unchecked, 14.95ms Time], IncrementalHoareTripleChecker [54 Valid, 1695 Invalid, 1 Unknown, 0 Unchecked, 7502.44ms Time] [2021-11-03 22:53:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-11-03 22:53:11,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1514. [2021-11-03 22:53:11,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1504 states have (on average 1.1023936170212767) internal successors, (1658), 1513 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1658 transitions. [2021-11-03 22:53:11,197 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1658 transitions. Word has length 91 [2021-11-03 22:53:11,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:11,198 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 1658 transitions. [2021-11-03 22:53:11,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2021-11-03 22:53:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1658 transitions. [2021-11-03 22:53:11,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 22:53:11,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:11,200 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] [2021-11-03 22:53:11,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-03 22:53:11,200 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:53:11,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash 877860158, now seen corresponding path program 1 times [2021-11-03 22:53:11,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:11,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684224689] [2021-11-03 22:53:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:11,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:16,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:16,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684224689] [2021-11-03 22:53:16,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684224689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:16,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:16,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 22:53:16,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764842465] [2021-11-03 22:53:16,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:16,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 22:53:16,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 22:53:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:53:16,931 INFO L87 Difference]: Start difference. First operand 1514 states and 1658 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 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) [2021-11-03 22:53:19,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:53:45,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:45,983 INFO L93 Difference]: Finished difference Result 2030 states and 2197 transitions. [2021-11-03 22:53:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 22:53:45,983 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 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 [2021-11-03 22:53:45,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:45,985 INFO L225 Difference]: With dead ends: 2030 [2021-11-03 22:53:45,985 INFO L226 Difference]: Without dead ends: 1787 [2021-11-03 22:53:45,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 6509.55ms TimeCoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722 [2021-11-03 22:53:45,986 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2965 mSDsluCounter, 4733 mSDsCounter, 0 mSdLazyCounter, 6837 mSolverCounterSat, 117 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22105.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2965 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.53ms SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 6837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23479.10ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:45,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2965 Valid, 0 Invalid, 6955 Unknown, 0 Unchecked, 80.53ms Time], IncrementalHoareTripleChecker [117 Valid, 6837 Invalid, 1 Unknown, 0 Unchecked, 23479.10ms Time] [2021-11-03 22:53:45,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2021-11-03 22:53:46,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1504. [2021-11-03 22:53:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1494 states have (on average 1.1004016064257027) internal successors, (1644), 1503 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1644 transitions. [2021-11-03 22:53:46,045 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1644 transitions. Word has length 91 [2021-11-03 22:53:46,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:46,045 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 1644 transitions. [2021-11-03 22:53:46,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 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) [2021-11-03 22:53:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1644 transitions. [2021-11-03 22:53:46,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 22:53:46,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:46,046 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] [2021-11-03 22:53:46,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-03 22:53:46,047 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:53:46,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:46,047 INFO L85 PathProgramCache]: Analyzing trace with hash 221627444, now seen corresponding path program 1 times [2021-11-03 22:53:46,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:46,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029404619] [2021-11-03 22:53:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:46,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:47,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:47,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029404619] [2021-11-03 22:53:47,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029404619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:47,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:47,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:53:47,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507993623] [2021-11-03 22:53:47,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:47,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:53:47,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:47,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:53:47,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:53:47,168 INFO L87 Difference]: Start difference. First operand 1504 states and 1644 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 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) [2021-11-03 22:53:50,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:06,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:06,924 INFO L93 Difference]: Finished difference Result 2376 states and 2579 transitions. [2021-11-03 22:54:06,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 22:54:06,925 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 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 [2021-11-03 22:54:06,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:06,927 INFO L225 Difference]: With dead ends: 2376 [2021-11-03 22:54:06,927 INFO L226 Difference]: Without dead ends: 1978 [2021-11-03 22:54:06,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2062.31ms TimeCoverageRelationStatistics Valid=249, Invalid=681, Unknown=0, NotChecked=0, Total=930 [2021-11-03 22:54:06,929 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2171 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 4622 mSolverCounterSat, 109 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16769.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.42ms SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 4622 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17941.12ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:06,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2171 Valid, 0 Invalid, 4732 Unknown, 0 Unchecked, 54.42ms Time], IncrementalHoareTripleChecker [109 Valid, 4622 Invalid, 1 Unknown, 0 Unchecked, 17941.12ms Time] [2021-11-03 22:54:06,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2021-11-03 22:54:06,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1512. [2021-11-03 22:54:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1502 states have (on average 1.100532623169108) internal successors, (1653), 1511 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1653 transitions. [2021-11-03 22:54:06,994 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1653 transitions. Word has length 91 [2021-11-03 22:54:06,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:06,995 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 1653 transitions. [2021-11-03 22:54:06,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 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) [2021-11-03 22:54:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1653 transitions. [2021-11-03 22:54:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 22:54:06,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:06,996 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] [2021-11-03 22:54:06,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-03 22:54:06,997 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:54:06,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:06,997 INFO L85 PathProgramCache]: Analyzing trace with hash -753662022, now seen corresponding path program 1 times [2021-11-03 22:54:06,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:06,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354647105] [2021-11-03 22:54:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:06,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:07,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:07,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354647105] [2021-11-03 22:54:07,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354647105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:07,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:07,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:54:07,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213093849] [2021-11-03 22:54:07,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:07,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:54:07,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:07,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:54:07,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:54:07,260 INFO L87 Difference]: Start difference. First operand 1512 states and 1653 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 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) [2021-11-03 22:54:09,308 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 [] [2021-11-03 22:54:11,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:11,972 INFO L93 Difference]: Finished difference Result 1952 states and 2158 transitions. [2021-11-03 22:54:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:54:11,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 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 [2021-11-03 22:54:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:11,974 INFO L225 Difference]: With dead ends: 1952 [2021-11-03 22:54:11,974 INFO L226 Difference]: Without dead ends: 1503 [2021-11-03 22:54:11,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 138.00ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:54:11,975 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 545 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4123.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.98ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4511.46ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:11,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 0 Invalid, 703 Unknown, 0 Unchecked, 6.98ms Time], IncrementalHoareTripleChecker [16 Valid, 686 Invalid, 1 Unknown, 0 Unchecked, 4511.46ms Time] [2021-11-03 22:54:11,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2021-11-03 22:54:12,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1503. [2021-11-03 22:54:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1493 states have (on average 1.0917615539182852) internal successors, (1630), 1502 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:12,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1630 transitions. [2021-11-03 22:54:12,052 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1630 transitions. Word has length 92 [2021-11-03 22:54:12,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:12,053 INFO L470 AbstractCegarLoop]: Abstraction has 1503 states and 1630 transitions. [2021-11-03 22:54:12,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 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) [2021-11-03 22:54:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1630 transitions. [2021-11-03 22:54:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 22:54:12,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:12,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:54:12,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-03 22:54:12,055 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:54:12,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:12,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2009071711, now seen corresponding path program 1 times [2021-11-03 22:54:12,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:12,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480494610] [2021-11-03 22:54:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:12,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:12,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:12,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480494610] [2021-11-03 22:54:12,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480494610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:12,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:12,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:54:12,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926777911] [2021-11-03 22:54:12,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:12,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:54:12,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:12,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:54:12,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:54:12,238 INFO L87 Difference]: Start difference. First operand 1503 states and 1630 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:15,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:18,962 INFO L93 Difference]: Finished difference Result 2195 states and 2402 transitions. [2021-11-03 22:54:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:54:18,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 22:54:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:18,964 INFO L225 Difference]: With dead ends: 2195 [2021-11-03 22:54:18,964 INFO L226 Difference]: Without dead ends: 1653 [2021-11-03 22:54:18,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:54:18,965 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6038.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.42ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6577.07ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:18,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 1114 Unknown, 0 Unchecked, 7.42ms Time], IncrementalHoareTripleChecker [4 Valid, 1109 Invalid, 1 Unknown, 0 Unchecked, 6577.07ms Time] [2021-11-03 22:54:18,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-11-03 22:54:19,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1509. [2021-11-03 22:54:19,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1499 states have (on average 1.0907271514342896) internal successors, (1635), 1508 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1635 transitions. [2021-11-03 22:54:19,028 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1635 transitions. Word has length 95 [2021-11-03 22:54:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:19,028 INFO L470 AbstractCegarLoop]: Abstraction has 1509 states and 1635 transitions. [2021-11-03 22:54:19,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1635 transitions. [2021-11-03 22:54:19,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 22:54:19,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:19,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:54:19,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-03 22:54:19,030 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:54:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:19,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2096361414, now seen corresponding path program 1 times [2021-11-03 22:54:19,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:19,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937521005] [2021-11-03 22:54:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:19,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:19,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:19,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937521005] [2021-11-03 22:54:19,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937521005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:19,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:19,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:54:19,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123826663] [2021-11-03 22:54:19,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:19,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:54:19,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:54:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:54:19,617 INFO L87 Difference]: Start difference. First operand 1509 states and 1635 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:22,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:30,185 INFO L93 Difference]: Finished difference Result 2519 states and 2759 transitions. [2021-11-03 22:54:30,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:54:30,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 22:54:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:30,188 INFO L225 Difference]: With dead ends: 2519 [2021-11-03 22:54:30,188 INFO L226 Difference]: Without dead ends: 1957 [2021-11-03 22:54:30,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 317.68ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:54:30,189 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 577 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9447.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.31ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10220.27ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:30,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 0 Invalid, 2149 Unknown, 0 Unchecked, 21.31ms Time], IncrementalHoareTripleChecker [16 Valid, 2132 Invalid, 1 Unknown, 0 Unchecked, 10220.27ms Time] [2021-11-03 22:54:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2021-11-03 22:54:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1718. [2021-11-03 22:54:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1708 states have (on average 1.088407494145199) internal successors, (1859), 1717 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 1859 transitions. [2021-11-03 22:54:30,267 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 1859 transitions. Word has length 96 [2021-11-03 22:54:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:30,267 INFO L470 AbstractCegarLoop]: Abstraction has 1718 states and 1859 transitions. [2021-11-03 22:54:30,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:30,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 1859 transitions. [2021-11-03 22:54:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 22:54:30,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:30,269 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] [2021-11-03 22:54:30,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-03 22:54:30,269 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:54:30,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:30,269 INFO L85 PathProgramCache]: Analyzing trace with hash -750734320, now seen corresponding path program 1 times [2021-11-03 22:54:30,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:30,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113067427] [2021-11-03 22:54:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:30,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:30,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:30,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:30,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113067427] [2021-11-03 22:54:30,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113067427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:30,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:30,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:54:30,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967736677] [2021-11-03 22:54:30,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:30,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:54:30,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:30,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:54:30,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:54:30,461 INFO L87 Difference]: Start difference. First operand 1718 states and 1859 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 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) [2021-11-03 22:54:32,508 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 [] [2021-11-03 22:54:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:35,918 INFO L93 Difference]: Finished difference Result 2469 states and 2686 transitions. [2021-11-03 22:54:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:54:35,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 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 [2021-11-03 22:54:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:35,921 INFO L225 Difference]: With dead ends: 2469 [2021-11-03 22:54:35,921 INFO L226 Difference]: Without dead ends: 1863 [2021-11-03 22:54:35,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:54:35,922 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4865.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.59ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5300.56ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:35,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 1090 Unknown, 0 Unchecked, 6.59ms Time], IncrementalHoareTripleChecker [4 Valid, 1085 Invalid, 1 Unknown, 0 Unchecked, 5300.56ms Time] [2021-11-03 22:54:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2021-11-03 22:54:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1708. [2021-11-03 22:54:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1698 states have (on average 1.0848056537102473) internal successors, (1842), 1707 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 1842 transitions. [2021-11-03 22:54:35,990 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 1842 transitions. Word has length 98 [2021-11-03 22:54:35,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:35,990 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 1842 transitions. [2021-11-03 22:54:35,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 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) [2021-11-03 22:54:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 1842 transitions. [2021-11-03 22:54:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-03 22:54:35,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:35,991 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] [2021-11-03 22:54:35,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-03 22:54:35,991 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:54:35,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:35,992 INFO L85 PathProgramCache]: Analyzing trace with hash -780400185, now seen corresponding path program 1 times [2021-11-03 22:54:35,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:35,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444905884] [2021-11-03 22:54:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:35,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:36,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:36,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444905884] [2021-11-03 22:54:36,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444905884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:36,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:36,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:54:36,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962866528] [2021-11-03 22:54:36,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:36,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:54:36,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:36,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:54:36,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:54:36,266 INFO L87 Difference]: Start difference. First operand 1708 states and 1842 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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) [2021-11-03 22:54:39,266 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:42,827 INFO L93 Difference]: Finished difference Result 1853 states and 2007 transitions. [2021-11-03 22:54:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:54:42,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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 [2021-11-03 22:54:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:42,830 INFO L225 Difference]: With dead ends: 1853 [2021-11-03 22:54:42,830 INFO L226 Difference]: Without dead ends: 1851 [2021-11-03 22:54:42,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:54:42,830 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5823.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6395.96ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:42,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 1005 Unknown, 0 Unchecked, 6.91ms Time], IncrementalHoareTripleChecker [1 Valid, 1003 Invalid, 1 Unknown, 0 Unchecked, 6395.96ms Time] [2021-11-03 22:54:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2021-11-03 22:54:42,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1716. [2021-11-03 22:54:42,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1706 states have (on average 1.0826494724501758) internal successors, (1847), 1715 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:42,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 1847 transitions. [2021-11-03 22:54:42,906 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 1847 transitions. Word has length 99 [2021-11-03 22:54:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:42,906 INFO L470 AbstractCegarLoop]: Abstraction has 1716 states and 1847 transitions. [2021-11-03 22:54:42,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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) [2021-11-03 22:54:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 1847 transitions. [2021-11-03 22:54:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-03 22:54:42,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:42,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:54:42,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-03 22:54:42,907 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:54:42,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash 180975425, now seen corresponding path program 1 times [2021-11-03 22:54:42,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:42,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616825497] [2021-11-03 22:54:42,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:42,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:43,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:43,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616825497] [2021-11-03 22:54:43,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616825497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:43,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:43,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:54:43,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164841033] [2021-11-03 22:54:43,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:43,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:54:43,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:43,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:54:43,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:54:43,365 INFO L87 Difference]: Start difference. First operand 1716 states and 1847 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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) [2021-11-03 22:54:46,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:51,196 INFO L93 Difference]: Finished difference Result 2089 states and 2249 transitions. [2021-11-03 22:54:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:54:51,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 [2021-11-03 22:54:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:51,199 INFO L225 Difference]: With dead ends: 2089 [2021-11-03 22:54:51,199 INFO L226 Difference]: Without dead ends: 1943 [2021-11-03 22:54:51,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 287.43ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:54:51,200 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 688 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6906.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.84ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7508.86ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:51,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 0 Invalid, 1482 Unknown, 0 Unchecked, 11.84ms Time], IncrementalHoareTripleChecker [28 Valid, 1453 Invalid, 1 Unknown, 0 Unchecked, 7508.86ms Time] [2021-11-03 22:54:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2021-11-03 22:54:51,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1696. [2021-11-03 22:54:51,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1686 states have (on average 1.0800711743772242) internal successors, (1821), 1695 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:51,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 1821 transitions. [2021-11-03 22:54:51,272 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 1821 transitions. Word has length 99 [2021-11-03 22:54:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:51,272 INFO L470 AbstractCegarLoop]: Abstraction has 1696 states and 1821 transitions. [2021-11-03 22:54:51,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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) [2021-11-03 22:54:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 1821 transitions. [2021-11-03 22:54:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 22:54:51,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:51,274 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] [2021-11-03 22:54:51,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-03 22:54:51,274 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:54:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:51,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1798423732, now seen corresponding path program 1 times [2021-11-03 22:54:51,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:51,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263000588] [2021-11-03 22:54:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:51,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:52,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:52,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263000588] [2021-11-03 22:54:52,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263000588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:52,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:52,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 22:54:52,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908929995] [2021-11-03 22:54:52,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:52,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 22:54:52,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 22:54:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:54:52,981 INFO L87 Difference]: Start difference. First operand 1696 states and 1821 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 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) [2021-11-03 22:54:55,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:18,724 INFO L93 Difference]: Finished difference Result 2673 states and 2837 transitions. [2021-11-03 22:55:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 22:55:18,724 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 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 [2021-11-03 22:55:18,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:18,727 INFO L225 Difference]: With dead ends: 2673 [2021-11-03 22:55:18,727 INFO L226 Difference]: Without dead ends: 2303 [2021-11-03 22:55:18,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 4211.25ms TimeCoverageRelationStatistics Valid=518, Invalid=1738, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 22:55:18,729 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3373 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 6116 mSolverCounterSat, 158 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20666.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3373 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.45ms SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 6116 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21991.79ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:18,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3373 Valid, 0 Invalid, 6275 Unknown, 0 Unchecked, 72.45ms Time], IncrementalHoareTripleChecker [158 Valid, 6116 Invalid, 1 Unknown, 0 Unchecked, 21991.79ms Time] [2021-11-03 22:55:18,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2021-11-03 22:55:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 1584. [2021-11-03 22:55:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1574 states have (on average 1.081956797966963) internal successors, (1703), 1583 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 1703 transitions. [2021-11-03 22:55:18,818 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 1703 transitions. Word has length 100 [2021-11-03 22:55:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:18,819 INFO L470 AbstractCegarLoop]: Abstraction has 1584 states and 1703 transitions. [2021-11-03 22:55:18,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 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) [2021-11-03 22:55:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 1703 transitions. [2021-11-03 22:55:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 22:55:18,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:18,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:55:18,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-03 22:55:18,821 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 22:55:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1721068625, now seen corresponding path program 1 times [2021-11-03 22:55:18,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:18,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672164863] [2021-11-03 22:55:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:18,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:55:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:55:23,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:55:23,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672164863] [2021-11-03 22:55:23,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672164863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:55:23,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:55:23,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-03 22:55:23,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258249522] [2021-11-03 22:55:23,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:55:23,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-03 22:55:23,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:55:24,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-03 22:55:24,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-11-03 22:55:24,000 INFO L87 Difference]: Start difference. First operand 1584 states and 1703 transitions. Second operand has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:27,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15