./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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_advance_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 f26a5d85d152e590b5f8a93f229efbb28bdd5e77c34d7106bb5825fc4b732cf6 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 08:59:58,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:59:58,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:59:58,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:59:58,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:59:58,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:59:58,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:59:58,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:59:58,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:59:58,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:59:58,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:59:58,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:59:58,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:59:58,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:59:58,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:59:58,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:59:58,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:59:58,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:59:58,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:59:58,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:59:58,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:59:58,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:59:58,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:59:58,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:59:58,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:59:58,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:59:58,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:59:58,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:59:58,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:59:58,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:59:58,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:59:58,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:59:58,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:59:58,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:59:58,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:59:58,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:59:58,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:59:58,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:59:58,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:59:58,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:59:58,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:59:58,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:59:58,490 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:59:58,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:59:58,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:59:58,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:59:58,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:59:58,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:59:58,493 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:59:58,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:59:58,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:59:58,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:59:58,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:59:58,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:59:58,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:59:58,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:59:58,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:59:58,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:59:58,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:59:58,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:59:58,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:59:58,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:59:58,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:59:58,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:59:58,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:59:58,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:59:58,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:59:58,496 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:59:58,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:59:58,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:59:58,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:59:58,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f26a5d85d152e590b5f8a93f229efbb28bdd5e77c34d7106bb5825fc4b732cf6 [2021-11-07 08:59:58,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:59:58,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:59:58,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:59:58,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:59:58,700 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:59:58,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i [2021-11-07 08:59:58,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d5e2ffd/8eeac2b38c6f40f0a51d4500c6690578/FLAGeab7ee873 [2021-11-07 08:59:59,315 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:59:59,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i [2021-11-07 08:59:59,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d5e2ffd/8eeac2b38c6f40f0a51d4500c6690578/FLAGeab7ee873 [2021-11-07 08:59:59,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d5e2ffd/8eeac2b38c6f40f0a51d4500c6690578 [2021-11-07 08:59:59,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:59:59,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:59:59,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:59:59,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:59:59,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:59:59,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:59:59" (1/1) ... [2021-11-07 08:59:59,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5d82e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:59, skipping insertion in model container [2021-11-07 08:59:59,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:59:59" (1/1) ... [2021-11-07 08:59:59,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:59:59,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:59:59,865 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_advance_harness.i[4497,4510] [2021-11-07 08:59:59,871 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_advance_harness.i[4557,4570] [2021-11-07 08:59:59,893 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:59:59,898 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:00:00,647 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:00,651 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:00,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:00,653 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:00,654 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:00,666 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:00,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:00,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:00,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:00,925 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:00:00,927 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:00:00,928 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:00:00,929 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:00:00,934 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:00:00,935 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:00:00,936 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:00:00,937 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:00:00,938 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:00:00,940 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:00:01,053 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:00:01,117 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,119 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:00:01,212 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 09:00:01,230 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_advance_harness.i[4497,4510] [2021-11-07 09:00:01,232 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_advance_harness.i[4557,4570] [2021-11-07 09:00:01,233 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:00:01,234 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:00:01,256 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,257 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,257 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,258 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,259 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,264 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,295 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:00:01,296 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:00:01,296 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:00:01,297 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:00:01,297 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:00:01,297 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:00:01,298 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:00:01,298 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:00:01,299 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:00:01,299 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:00:01,317 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:00:01,408 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,408 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:00:01,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:00:01,587 INFO L208 MainTranslator]: Completed translation [2021-11-07 09:00:01,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01 WrapperNode [2021-11-07 09:00:01,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 09:00:01,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 09:00:01,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 09:00:01,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 09:00:01,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01" (1/1) ... [2021-11-07 09:00:01,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01" (1/1) ... [2021-11-07 09:00:01,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 09:00:01,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 09:00:01,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 09:00:01,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 09:00:01,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01" (1/1) ... [2021-11-07 09:00:01,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01" (1/1) ... [2021-11-07 09:00:01,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01" (1/1) ... [2021-11-07 09:00:01,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01" (1/1) ... [2021-11-07 09:00:01,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01" (1/1) ... [2021-11-07 09:00:01,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01" (1/1) ... [2021-11-07 09:00:01,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01" (1/1) ... [2021-11-07 09:00:01,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 09:00:01,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 09:00:01,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 09:00:01,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 09:00:01,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01" (1/1) ... [2021-11-07 09:00:01,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:00:01,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:00:01,902 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) [2021-11-07 09:00:01,919 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 [2021-11-07 09:00:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 09:00:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 09:00:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 09:00:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 09:00:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 09:00:01,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 09:00:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 09:00:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 09:00:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 09:00:01,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 09:00:01,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 09:00:09,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 09:00:09,291 INFO L299 CfgBuilder]: Removed 58 assume(true) statements. [2021-11-07 09:00:09,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:00:09 BoogieIcfgContainer [2021-11-07 09:00:09,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 09:00:09,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 09:00:09,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 09:00:09,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 09:00:09,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:59:59" (1/3) ... [2021-11-07 09:00:09,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c26aa57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:00:09, skipping insertion in model container [2021-11-07 09:00:09,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:01" (2/3) ... [2021-11-07 09:00:09,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c26aa57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:00:09, skipping insertion in model container [2021-11-07 09:00:09,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:00:09" (3/3) ... [2021-11-07 09:00:09,298 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_advance_harness.i [2021-11-07 09:00:09,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 09:00:09,307 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 09:00:09,340 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 09:00:09,353 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 [2021-11-07 09:00:09,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 09:00:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 126 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 09:00:09,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:09,369 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] [2021-11-07 09:00:09,370 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:00:09,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:09,374 INFO L85 PathProgramCache]: Analyzing trace with hash -443327314, now seen corresponding path program 1 times [2021-11-07 09:00:09,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:09,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451622201] [2021-11-07 09:00:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:09,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:09,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:09,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451622201] [2021-11-07 09:00:09,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451622201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:09,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:09,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:00:09,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280546213] [2021-11-07 09:00:09,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:09,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:00:09,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:10,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:00:10,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:00:10,011 INFO L87 Difference]: Start difference. First operand has 127 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 126 states have internal predecessors, (173), 0 states have call successors, (0), 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 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:10,174 INFO L93 Difference]: Finished difference Result 249 states and 339 transitions. [2021-11-07 09:00:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:00:10,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-07 09:00:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:10,182 INFO L225 Difference]: With dead ends: 249 [2021-11-07 09:00:10,182 INFO L226 Difference]: Without dead ends: 119 [2021-11-07 09:00:10,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.93ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:00:10,186 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 205 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.78ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.48ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:10,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 221 Invalid, 36 Unknown, 0 Unchecked, 3.78ms Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 129.48ms Time] [2021-11-07 09:00:10,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-07 09:00:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-07 09:00:10,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 109 states have (on average 1.3394495412844036) internal successors, (146), 118 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2021-11-07 09:00:10,210 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 26 [2021-11-07 09:00:10,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:10,211 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2021-11-07 09:00:10,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:10,211 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2021-11-07 09:00:10,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 09:00:10,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:10,212 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] [2021-11-07 09:00:10,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 09:00:10,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:00:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1924042484, now seen corresponding path program 1 times [2021-11-07 09:00:10,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:10,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843505895] [2021-11-07 09:00:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:10,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:10,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:10,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843505895] [2021-11-07 09:00:10,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843505895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:10,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:10,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:00:10,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751995831] [2021-11-07 09:00:10,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:10,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:00:10,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:10,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:00:10,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:00:10,517 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:10,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:10,787 INFO L93 Difference]: Finished difference Result 186 states and 223 transitions. [2021-11-07 09:00:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:00:10,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-07 09:00:10,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:10,789 INFO L225 Difference]: With dead ends: 186 [2021-11-07 09:00:10,789 INFO L226 Difference]: Without dead ends: 119 [2021-11-07 09:00:10,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 133.34ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:00:10,790 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 292 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.02ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 169.94ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:10,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 223 Invalid, 41 Unknown, 0 Unchecked, 3.02ms Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 169.94ms Time] [2021-11-07 09:00:10,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-07 09:00:10,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-07 09:00:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 118 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:10,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 145 transitions. [2021-11-07 09:00:10,800 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 145 transitions. Word has length 30 [2021-11-07 09:00:10,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:10,800 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 145 transitions. [2021-11-07 09:00:10,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 145 transitions. [2021-11-07 09:00:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 09:00:10,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:10,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:10,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 09:00:10,801 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:00:10,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:10,802 INFO L85 PathProgramCache]: Analyzing trace with hash 434837223, now seen corresponding path program 1 times [2021-11-07 09:00:10,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:10,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900404677] [2021-11-07 09:00:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:10,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:11,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:11,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900404677] [2021-11-07 09:00:11,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900404677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:11,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:11,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:00:11,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934457765] [2021-11-07 09:00:11,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:11,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:00:11,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:11,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:00:11,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:00:11,359 INFO L87 Difference]: Start difference. First operand 119 states and 145 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:12,223 INFO L93 Difference]: Finished difference Result 217 states and 256 transitions. [2021-11-07 09:00:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:00:12,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-07 09:00:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:12,225 INFO L225 Difference]: With dead ends: 217 [2021-11-07 09:00:12,225 INFO L226 Difference]: Without dead ends: 211 [2021-11-07 09:00:12,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 274.98ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:00:12,226 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 158 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 599.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.69ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 669.49ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:12,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 680 Invalid, 221 Unknown, 0 Unchecked, 6.69ms Time], IncrementalHoareTripleChecker [35 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 669.49ms Time] [2021-11-07 09:00:12,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-07 09:00:12,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 131. [2021-11-07 09:00:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 121 states have (on average 1.2975206611570247) internal successors, (157), 130 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2021-11-07 09:00:12,234 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 32 [2021-11-07 09:00:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:12,235 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2021-11-07 09:00:12,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2021-11-07 09:00:12,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 09:00:12,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:12,236 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] [2021-11-07 09:00:12,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 09:00:12,236 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:00:12,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash -2134165153, now seen corresponding path program 1 times [2021-11-07 09:00:12,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:12,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979885244] [2021-11-07 09:00:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:12,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:13,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:13,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979885244] [2021-11-07 09:00:13,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979885244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:13,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:13,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:00:13,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185176032] [2021-11-07 09:00:13,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:13,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:00:13,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:13,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:00:13,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:00:13,348 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:15,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:17,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:19,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:21,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:23,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:25,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:28,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:31,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:31,029 INFO L93 Difference]: Finished difference Result 339 states and 402 transitions. [2021-11-07 09:00:31,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 09:00:31,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-07 09:00:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:31,032 INFO L225 Difference]: With dead ends: 339 [2021-11-07 09:00:31,032 INFO L226 Difference]: Without dead ends: 231 [2021-11-07 09:00:31,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1729.94ms TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2021-11-07 09:00:31,034 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 414 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 63 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15495.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.07ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16344.56ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:31,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 860 Invalid, 551 Unknown, 0 Unchecked, 12.07ms Time], IncrementalHoareTripleChecker [63 Valid, 481 Invalid, 7 Unknown, 0 Unchecked, 16344.56ms Time] [2021-11-07 09:00:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-07 09:00:31,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 150. [2021-11-07 09:00:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 140 states have (on average 1.2714285714285714) internal successors, (178), 149 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:31,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 178 transitions. [2021-11-07 09:00:31,043 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 178 transitions. Word has length 36 [2021-11-07 09:00:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:31,044 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 178 transitions. [2021-11-07 09:00:31,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:31,044 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 178 transitions. [2021-11-07 09:00:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 09:00:31,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:31,045 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] [2021-11-07 09:00:31,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 09:00:31,045 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:00:31,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:31,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1573996129, now seen corresponding path program 1 times [2021-11-07 09:00:31,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:31,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097948070] [2021-11-07 09:00:31,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:31,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:31,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:31,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097948070] [2021-11-07 09:00:31,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097948070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:31,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:31,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 09:00:31,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924861506] [2021-11-07 09:00:31,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:31,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 09:00:31,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 09:00:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 09:00:31,224 INFO L87 Difference]: Start difference. First operand 150 states and 178 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:31,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:31,257 INFO L93 Difference]: Finished difference Result 241 states and 285 transitions. [2021-11-07 09:00:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 09:00:31,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-07 09:00:31,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:31,260 INFO L225 Difference]: With dead ends: 241 [2021-11-07 09:00:31,260 INFO L226 Difference]: Without dead ends: 152 [2021-11-07 09:00:31,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 09:00:31,262 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.60ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:31,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 6 Unknown, 0 Unchecked, 0.47ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 28.60ms Time] [2021-11-07 09:00:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-07 09:00:31,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-07 09:00:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 142 states have (on average 1.267605633802817) internal successors, (180), 151 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2021-11-07 09:00:31,269 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 36 [2021-11-07 09:00:31,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:31,270 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2021-11-07 09:00:31,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:31,270 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2021-11-07 09:00:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 09:00:31,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:31,271 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] [2021-11-07 09:00:31,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 09:00:31,271 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:00:31,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash 562878879, now seen corresponding path program 1 times [2021-11-07 09:00:31,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:31,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280048030] [2021-11-07 09:00:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:31,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:32,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:32,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280048030] [2021-11-07 09:00:32,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280048030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:32,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:32,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:00:32,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47930529] [2021-11-07 09:00:32,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:32,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:00:32,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:32,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:00:32,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:00:32,609 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:34,675 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 [] [2021-11-07 09:00:36,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:38,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:41,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:43,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:48,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:48,307 INFO L93 Difference]: Finished difference Result 343 states and 402 transitions. [2021-11-07 09:00:48,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 09:00:48,308 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-07 09:00:48,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:48,309 INFO L225 Difference]: With dead ends: 343 [2021-11-07 09:00:48,309 INFO L226 Difference]: Without dead ends: 261 [2021-11-07 09:00:48,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 3421.33ms TimeCoverageRelationStatistics Valid=341, Invalid=1141, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 09:00:48,310 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 561 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 81 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12108.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.79ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12856.68ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:48,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 996 Invalid, 685 Unknown, 0 Unchecked, 12.79ms Time], IncrementalHoareTripleChecker [81 Valid, 599 Invalid, 5 Unknown, 0 Unchecked, 12856.68ms Time] [2021-11-07 09:00:48,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-07 09:00:48,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 152. [2021-11-07 09:00:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 142 states have (on average 1.267605633802817) internal successors, (180), 151 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2021-11-07 09:00:48,317 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 36 [2021-11-07 09:00:48,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:48,318 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2021-11-07 09:00:48,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:48,318 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2021-11-07 09:00:48,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 09:00:48,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:48,319 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] [2021-11-07 09:00:48,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 09:00:48,319 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:00:48,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:48,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1581952149, now seen corresponding path program 1 times [2021-11-07 09:00:48,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:48,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587802881] [2021-11-07 09:00:48,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:48,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:48,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:48,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587802881] [2021-11-07 09:00:48,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587802881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:48,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:48,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:00:48,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946363834] [2021-11-07 09:00:48,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:48,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:00:48,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:48,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:00:48,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:00:48,524 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:48,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:48,660 INFO L93 Difference]: Finished difference Result 208 states and 241 transitions. [2021-11-07 09:00:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:00:48,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-11-07 09:00:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:48,661 INFO L225 Difference]: With dead ends: 208 [2021-11-07 09:00:48,661 INFO L226 Difference]: Without dead ends: 152 [2021-11-07 09:00:48,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:00:48,662 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 89 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.44ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:48,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 303 Invalid, 29 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 105.44ms Time] [2021-11-07 09:00:48,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-07 09:00:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-07 09:00:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 142 states have (on average 1.2605633802816902) internal successors, (179), 151 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2021-11-07 09:00:48,668 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 37 [2021-11-07 09:00:48,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:48,668 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2021-11-07 09:00:48,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:48,669 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2021-11-07 09:00:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 09:00:48,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:48,670 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] [2021-11-07 09:00:48,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 09:00:48,670 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:00:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash -185094105, now seen corresponding path program 1 times [2021-11-07 09:00:48,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:48,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141858450] [2021-11-07 09:00:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:48,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:49,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:49,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141858450] [2021-11-07 09:00:49,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141858450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:49,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:49,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:00:49,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681417577] [2021-11-07 09:00:49,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:49,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:00:49,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:49,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:00:49,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:00:49,236 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:50,002 INFO L93 Difference]: Finished difference Result 329 states and 376 transitions. [2021-11-07 09:00:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:00:50,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-07 09:00:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:50,003 INFO L225 Difference]: With dead ends: 329 [2021-11-07 09:00:50,003 INFO L226 Difference]: Without dead ends: 208 [2021-11-07 09:00:50,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 245.08ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:00:50,004 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 96 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 593.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.75ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 631.20ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:50,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 702 Invalid, 225 Unknown, 0 Unchecked, 3.75ms Time], IncrementalHoareTripleChecker [29 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 631.20ms Time] [2021-11-07 09:00:50,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-07 09:00:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 152. [2021-11-07 09:00:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 142 states have (on average 1.2464788732394365) internal successors, (177), 151 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 177 transitions. [2021-11-07 09:00:50,010 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 177 transitions. Word has length 40 [2021-11-07 09:00:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:50,010 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 177 transitions. [2021-11-07 09:00:50,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 177 transitions. [2021-11-07 09:00:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 09:00:50,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:50,014 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] [2021-11-07 09:00:50,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 09:00:50,014 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:00:50,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:50,015 INFO L85 PathProgramCache]: Analyzing trace with hash -139950484, now seen corresponding path program 1 times [2021-11-07 09:00:50,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:50,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873531787] [2021-11-07 09:00:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:50,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:50,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:50,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873531787] [2021-11-07 09:00:50,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873531787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:50,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:50,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:00:50,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720473065] [2021-11-07 09:00:50,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:50,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:00:50,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:50,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:00:50,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:00:50,396 INFO L87 Difference]: Start difference. First operand 152 states and 177 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:52,447 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 [] [2021-11-07 09:00:53,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:53,169 INFO L93 Difference]: Finished difference Result 317 states and 363 transitions. [2021-11-07 09:00:53,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:00:53,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-07 09:00:53,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:53,174 INFO L225 Difference]: With dead ends: 317 [2021-11-07 09:00:53,174 INFO L226 Difference]: Without dead ends: 200 [2021-11-07 09:00:53,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 89.51ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:00:53,175 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 202 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2563.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.40ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2724.26ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:53,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 336 Invalid, 184 Unknown, 0 Unchecked, 7.40ms Time], IncrementalHoareTripleChecker [26 Valid, 157 Invalid, 1 Unknown, 0 Unchecked, 2724.26ms Time] [2021-11-07 09:00:53,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-07 09:00:53,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 152. [2021-11-07 09:00:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 142 states have (on average 1.2112676056338028) internal successors, (172), 151 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 172 transitions. [2021-11-07 09:00:53,182 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 172 transitions. Word has length 42 [2021-11-07 09:00:53,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:53,182 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 172 transitions. [2021-11-07 09:00:53,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 172 transitions. [2021-11-07 09:00:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 09:00:53,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:53,184 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] [2021-11-07 09:00:53,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 09:00:53,184 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:00:53,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:53,184 INFO L85 PathProgramCache]: Analyzing trace with hash 561649390, now seen corresponding path program 1 times [2021-11-07 09:00:53,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:53,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436988311] [2021-11-07 09:00:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:53,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:54,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:54,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436988311] [2021-11-07 09:00:54,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436988311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:54,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:54,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:00:54,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122573785] [2021-11-07 09:00:54,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:54,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:00:54,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:00:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:00:54,282 INFO L87 Difference]: Start difference. First operand 152 states and 172 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:56,330 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 [] [2021-11-07 09:00:58,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:00,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:02,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:04,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:07,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:09,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:11,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:15,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:15,135 INFO L93 Difference]: Finished difference Result 347 states and 392 transitions. [2021-11-07 09:01:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 09:01:15,135 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-07 09:01:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:15,136 INFO L225 Difference]: With dead ends: 347 [2021-11-07 09:01:15,136 INFO L226 Difference]: Without dead ends: 265 [2021-11-07 09:01:15,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2911.68ms TimeCoverageRelationStatistics Valid=282, Invalid=710, Unknown=0, NotChecked=0, Total=992 [2021-11-07 09:01:15,137 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 734 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 48 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17383.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.78ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18450.36ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:15,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 714 Invalid, 509 Unknown, 0 Unchecked, 7.78ms Time], IncrementalHoareTripleChecker [48 Valid, 453 Invalid, 8 Unknown, 0 Unchecked, 18450.36ms Time] [2021-11-07 09:01:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-07 09:01:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 159. [2021-11-07 09:01:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 149 states have (on average 1.2147651006711409) internal successors, (181), 158 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 181 transitions. [2021-11-07 09:01:15,145 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 181 transitions. Word has length 42 [2021-11-07 09:01:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:15,145 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 181 transitions. [2021-11-07 09:01:15,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 181 transitions. [2021-11-07 09:01:15,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 09:01:15,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:15,146 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] [2021-11-07 09:01:15,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 09:01:15,147 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:01:15,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:15,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1036273874, now seen corresponding path program 1 times [2021-11-07 09:01:15,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:15,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950497871] [2021-11-07 09:01:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:15,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:01:15,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:15,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950497871] [2021-11-07 09:01:15,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950497871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:15,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:15,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:01:15,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38290456] [2021-11-07 09:01:15,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:15,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:01:15,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:15,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:01:15,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:01:15,830 INFO L87 Difference]: Start difference. First operand 159 states and 181 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:17,872 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 [] [2021-11-07 09:01:20,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:22,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:23,443 INFO L93 Difference]: Finished difference Result 276 states and 314 transitions. [2021-11-07 09:01:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:01:23,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-07 09:01:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:23,445 INFO L225 Difference]: With dead ends: 276 [2021-11-07 09:01:23,445 INFO L226 Difference]: Without dead ends: 176 [2021-11-07 09:01:23,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 338.68ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:01:23,445 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 138 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7006.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.67ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7421.55ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:23,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 606 Invalid, 306 Unknown, 0 Unchecked, 3.67ms Time], IncrementalHoareTripleChecker [13 Valid, 290 Invalid, 3 Unknown, 0 Unchecked, 7421.55ms Time] [2021-11-07 09:01:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-07 09:01:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 162. [2021-11-07 09:01:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 161 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 184 transitions. [2021-11-07 09:01:23,450 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 184 transitions. Word has length 42 [2021-11-07 09:01:23,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:23,451 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 184 transitions. [2021-11-07 09:01:23,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 184 transitions. [2021-11-07 09:01:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 09:01:23,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:23,452 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] [2021-11-07 09:01:23,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 09:01:23,452 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:01:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1560368280, now seen corresponding path program 1 times [2021-11-07 09:01:23,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:23,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914520290] [2021-11-07 09:01:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:23,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:01:23,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:23,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914520290] [2021-11-07 09:01:23,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914520290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:23,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:23,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:01:23,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342084303] [2021-11-07 09:01:23,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:23,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:01:23,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:23,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:01:23,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:01:23,676 INFO L87 Difference]: Start difference. First operand 162 states and 184 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) [2021-11-07 09:01:25,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:27,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:28,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:28,474 INFO L93 Difference]: Finished difference Result 256 states and 288 transitions. [2021-11-07 09:01:28,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:01:28,474 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 [2021-11-07 09:01:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:28,475 INFO L225 Difference]: With dead ends: 256 [2021-11-07 09:01:28,475 INFO L226 Difference]: Without dead ends: 193 [2021-11-07 09:01:28,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 127.53ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:01:28,476 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 32 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4444.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4697.07ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:28,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 432 Invalid, 155 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 2 Unknown, 0 Unchecked, 4697.07ms Time] [2021-11-07 09:01:28,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-07 09:01:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2021-11-07 09:01:28,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 175 states have (on average 1.2057142857142857) internal successors, (211), 184 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 211 transitions. [2021-11-07 09:01:28,481 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 211 transitions. Word has length 43 [2021-11-07 09:01:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:28,482 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 211 transitions. [2021-11-07 09:01:28,482 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) [2021-11-07 09:01:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 211 transitions. [2021-11-07 09:01:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 09:01:28,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:28,482 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] [2021-11-07 09:01:28,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 09:01:28,483 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:01:28,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:28,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1955314904, now seen corresponding path program 1 times [2021-11-07 09:01:28,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:28,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125967248] [2021-11-07 09:01:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:28,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:01:29,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:29,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125967248] [2021-11-07 09:01:29,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125967248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:29,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:29,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 09:01:29,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490379249] [2021-11-07 09:01:29,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:29,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:01:29,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:29,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:01:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:01:29,831 INFO L87 Difference]: Start difference. First operand 185 states and 211 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 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) [2021-11-07 09:01:31,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:33,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:36,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:38,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:40,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:42,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:44,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:46,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:53,589 INFO L93 Difference]: Finished difference Result 330 states and 366 transitions. [2021-11-07 09:01:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 09:01:53,590 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 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 [2021-11-07 09:01:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:53,591 INFO L225 Difference]: With dead ends: 330 [2021-11-07 09:01:53,591 INFO L226 Difference]: Without dead ends: 267 [2021-11-07 09:01:53,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 5084.89ms TimeCoverageRelationStatistics Valid=524, Invalid=2128, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 09:01:53,592 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 731 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 91 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18291.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.24ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19314.76ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:53,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 1132 Invalid, 878 Unknown, 0 Unchecked, 9.24ms Time], IncrementalHoareTripleChecker [91 Valid, 779 Invalid, 8 Unknown, 0 Unchecked, 19314.76ms Time] [2021-11-07 09:01:53,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-07 09:01:53,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 182. [2021-11-07 09:01:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 172 states have (on average 1.2093023255813953) internal successors, (208), 181 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:53,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2021-11-07 09:01:53,599 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 43 [2021-11-07 09:01:53,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:53,600 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2021-11-07 09:01:53,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 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) [2021-11-07 09:01:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2021-11-07 09:01:53,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 09:01:53,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:53,600 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] [2021-11-07 09:01:53,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 09:01:53,601 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:01:53,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1723612779, now seen corresponding path program 1 times [2021-11-07 09:01:53,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:53,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79094813] [2021-11-07 09:01:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:53,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:01:53,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:53,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79094813] [2021-11-07 09:01:53,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79094813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:53,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:53,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:01:53,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346234685] [2021-11-07 09:01:53,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:53,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:01:53,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:53,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:01:53,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:01:53,818 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2021-11-07 09:01:53,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:53,943 INFO L93 Difference]: Finished difference Result 218 states and 244 transitions. [2021-11-07 09:01:53,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:01:53,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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 [2021-11-07 09:01:53,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:53,944 INFO L225 Difference]: With dead ends: 218 [2021-11-07 09:01:53,944 INFO L226 Difference]: Without dead ends: 182 [2021-11-07 09:01:53,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:01:53,945 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 130 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.09ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:53,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 223 Invalid, 29 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 91.09ms Time] [2021-11-07 09:01:53,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-07 09:01:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-07 09:01:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 172 states have (on average 1.2034883720930232) internal successors, (207), 181 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2021-11-07 09:01:53,951 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 45 [2021-11-07 09:01:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:53,951 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2021-11-07 09:01:53,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2021-11-07 09:01:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2021-11-07 09:01:53,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 09:01:53,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:53,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:01:53,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 09:01:53,952 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:01:53,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:53,953 INFO L85 PathProgramCache]: Analyzing trace with hash 305433952, now seen corresponding path program 1 times [2021-11-07 09:01:53,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:53,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704235042] [2021-11-07 09:01:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:53,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:01:54,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:54,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704235042] [2021-11-07 09:01:54,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704235042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:54,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:54,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:01:54,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541328112] [2021-11-07 09:01:54,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:54,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:01:54,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:54,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:01:54,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:01:54,519 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2021-11-07 09:01:56,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:58,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:59,287 INFO L93 Difference]: Finished difference Result 484 states and 549 transitions. [2021-11-07 09:01:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:01:59,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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 [2021-11-07 09:01:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:59,288 INFO L225 Difference]: With dead ends: 484 [2021-11-07 09:01:59,288 INFO L226 Difference]: Without dead ends: 344 [2021-11-07 09:01:59,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 411.80ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:01:59,291 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 173 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4269.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.32ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4549.71ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:59,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 487 Invalid, 89 Unknown, 0 Unchecked, 1.32ms Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 2 Unknown, 0 Unchecked, 4549.71ms Time] [2021-11-07 09:01:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-07 09:01:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 198. [2021-11-07 09:01:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 188 states have (on average 1.196808510638298) internal successors, (225), 197 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:59,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 225 transitions. [2021-11-07 09:01:59,300 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 225 transitions. Word has length 45 [2021-11-07 09:01:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:59,300 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 225 transitions. [2021-11-07 09:01:59,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2021-11-07 09:01:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 225 transitions. [2021-11-07 09:01:59,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 09:01:59,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:59,301 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] [2021-11-07 09:01:59,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 09:01:59,301 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:01:59,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:59,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1864309569, now seen corresponding path program 1 times [2021-11-07 09:01:59,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:59,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117832313] [2021-11-07 09:01:59,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:59,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:01,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:01,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117832313] [2021-11-07 09:02:01,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117832313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:01,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:01,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 09:02:01,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326448897] [2021-11-07 09:02:01,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:01,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 09:02:01,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:01,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 09:02:01,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:02:01,705 INFO L87 Difference]: Start difference. First operand 198 states and 225 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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) [2021-11-07 09:02:03,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:05,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:08,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:10,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:12,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:14,613 INFO L93 Difference]: Finished difference Result 420 states and 474 transitions. [2021-11-07 09:02:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:02:14,614 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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 [2021-11-07 09:02:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:14,615 INFO L225 Difference]: With dead ends: 420 [2021-11-07 09:02:14,615 INFO L226 Difference]: Without dead ends: 235 [2021-11-07 09:02:14,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1307.90ms TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2021-11-07 09:02:14,616 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 110 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 23 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11343.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.66ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12026.03ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:14,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 832 Invalid, 490 Unknown, 0 Unchecked, 4.66ms Time], IncrementalHoareTripleChecker [23 Valid, 462 Invalid, 5 Unknown, 0 Unchecked, 12026.03ms Time] [2021-11-07 09:02:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-07 09:02:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 194. [2021-11-07 09:02:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 184 states have (on average 1.1793478260869565) internal successors, (217), 193 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 217 transitions. [2021-11-07 09:02:14,622 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 217 transitions. Word has length 48 [2021-11-07 09:02:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:14,622 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 217 transitions. [2021-11-07 09:02:14,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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) [2021-11-07 09:02:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 217 transitions. [2021-11-07 09:02:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 09:02:14,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:14,623 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] [2021-11-07 09:02:14,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 09:02:14,623 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:02:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash -868262626, now seen corresponding path program 1 times [2021-11-07 09:02:14,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:14,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454137170] [2021-11-07 09:02:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:14,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:15,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:15,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454137170] [2021-11-07 09:02:15,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454137170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:15,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:15,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 09:02:15,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029869761] [2021-11-07 09:02:15,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:15,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 09:02:15,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:15,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 09:02:15,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:02:15,770 INFO L87 Difference]: Start difference. First operand 194 states and 217 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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) [2021-11-07 09:02:17,815 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 [] [2021-11-07 09:02:19,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:22,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:24,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:24,922 INFO L93 Difference]: Finished difference Result 410 states and 451 transitions. [2021-11-07 09:02:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 09:02:24,923 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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 [2021-11-07 09:02:24,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:24,924 INFO L225 Difference]: With dead ends: 410 [2021-11-07 09:02:24,924 INFO L226 Difference]: Without dead ends: 322 [2021-11-07 09:02:24,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1836.66ms TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2021-11-07 09:02:24,925 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 580 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 50 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7213.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.76ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7668.50ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:24,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 572 Invalid, 449 Unknown, 0 Unchecked, 4.76ms Time], IncrementalHoareTripleChecker [50 Valid, 396 Invalid, 3 Unknown, 0 Unchecked, 7668.50ms Time] [2021-11-07 09:02:24,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-07 09:02:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 197. [2021-11-07 09:02:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 187 states have (on average 1.1764705882352942) internal successors, (220), 196 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 220 transitions. [2021-11-07 09:02:24,931 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 220 transitions. Word has length 48 [2021-11-07 09:02:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:24,931 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 220 transitions. [2021-11-07 09:02:24,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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) [2021-11-07 09:02:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 220 transitions. [2021-11-07 09:02:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:02:24,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:24,932 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] [2021-11-07 09:02:24,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 09:02:24,932 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:02:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:24,933 INFO L85 PathProgramCache]: Analyzing trace with hash 918000232, now seen corresponding path program 1 times [2021-11-07 09:02:24,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:24,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470574843] [2021-11-07 09:02:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:24,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:25,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:25,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470574843] [2021-11-07 09:02:25,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470574843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:25,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:25,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:02:25,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267282102] [2021-11-07 09:02:25,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:25,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:02:25,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:02:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:02:25,187 INFO L87 Difference]: Start difference. First operand 197 states and 220 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:27,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:29,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:30,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:30,177 INFO L93 Difference]: Finished difference Result 297 states and 322 transitions. [2021-11-07 09:02:30,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:02:30,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:02:30,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:30,179 INFO L225 Difference]: With dead ends: 297 [2021-11-07 09:02:30,179 INFO L226 Difference]: Without dead ends: 252 [2021-11-07 09:02:30,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 187.42ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:02:30,179 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 101 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4572.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4844.15ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:30,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 493 Invalid, 181 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [10 Valid, 169 Invalid, 2 Unknown, 0 Unchecked, 4844.15ms Time] [2021-11-07 09:02:30,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-07 09:02:30,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 215. [2021-11-07 09:02:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 205 states have (on average 1.1609756097560975) internal successors, (238), 214 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:30,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 238 transitions. [2021-11-07 09:02:30,186 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 238 transitions. Word has length 51 [2021-11-07 09:02:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:30,186 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 238 transitions. [2021-11-07 09:02:30,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 238 transitions. [2021-11-07 09:02:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:02:30,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:30,187 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] [2021-11-07 09:02:30,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 09:02:30,188 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:02:30,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:30,188 INFO L85 PathProgramCache]: Analyzing trace with hash 746971928, now seen corresponding path program 1 times [2021-11-07 09:02:30,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:30,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421441714] [2021-11-07 09:02:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:30,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:30,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:30,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421441714] [2021-11-07 09:02:30,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421441714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:30,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:30,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:02:30,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069178209] [2021-11-07 09:02:30,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:30,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:02:30,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:30,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:02:30,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:02:30,534 INFO L87 Difference]: Start difference. First operand 215 states and 238 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:32,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:34,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:35,182 INFO L93 Difference]: Finished difference Result 252 states and 274 transitions. [2021-11-07 09:02:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:02:35,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:02:35,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:35,183 INFO L225 Difference]: With dead ends: 252 [2021-11-07 09:02:35,183 INFO L226 Difference]: Without dead ends: 250 [2021-11-07 09:02:35,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 177.85ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:02:35,184 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 73 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4300.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.25ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4570.03ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:35,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 560 Invalid, 111 Unknown, 0 Unchecked, 1.25ms Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 2 Unknown, 0 Unchecked, 4570.03ms Time] [2021-11-07 09:02:35,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-07 09:02:35,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 223. [2021-11-07 09:02:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 213 states have (on average 1.164319248826291) internal successors, (248), 222 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:35,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 248 transitions. [2021-11-07 09:02:35,191 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 248 transitions. Word has length 51 [2021-11-07 09:02:35,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:35,192 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 248 transitions. [2021-11-07 09:02:35,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 248 transitions. [2021-11-07 09:02:35,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:02:35,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:35,193 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] [2021-11-07 09:02:35,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 09:02:35,193 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:02:35,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:35,193 INFO L85 PathProgramCache]: Analyzing trace with hash 747013634, now seen corresponding path program 1 times [2021-11-07 09:02:35,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:35,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176081195] [2021-11-07 09:02:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:35,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:35,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:35,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176081195] [2021-11-07 09:02:35,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176081195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:35,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:35,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 09:02:35,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501638164] [2021-11-07 09:02:35,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:35,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 09:02:35,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 09:02:35,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 09:02:35,313 INFO L87 Difference]: Start difference. First operand 223 states and 248 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:35,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:35,345 INFO L93 Difference]: Finished difference Result 240 states and 266 transitions. [2021-11-07 09:02:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 09:02:35,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:02:35,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:35,346 INFO L225 Difference]: With dead ends: 240 [2021-11-07 09:02:35,346 INFO L226 Difference]: Without dead ends: 225 [2021-11-07 09:02:35,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 09:02:35,347 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.20ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:35,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 6 Unknown, 0 Unchecked, 0.16ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 27.20ms Time] [2021-11-07 09:02:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-07 09:02:35,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-11-07 09:02:35,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 215 states have (on average 1.1627906976744187) internal successors, (250), 224 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:35,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 250 transitions. [2021-11-07 09:02:35,356 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 250 transitions. Word has length 51 [2021-11-07 09:02:35,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:35,357 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 250 transitions. [2021-11-07 09:02:35,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:35,357 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 250 transitions. [2021-11-07 09:02:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:02:35,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:35,357 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] [2021-11-07 09:02:35,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 09:02:35,358 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:02:35,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:35,358 INFO L85 PathProgramCache]: Analyzing trace with hash 747073216, now seen corresponding path program 1 times [2021-11-07 09:02:35,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:35,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768177680] [2021-11-07 09:02:35,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:35,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:36,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:36,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768177680] [2021-11-07 09:02:36,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768177680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:36,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:36,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:02:36,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15445866] [2021-11-07 09:02:36,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:36,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:02:36,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:36,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:02:36,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:02:36,463 INFO L87 Difference]: Start difference. First operand 225 states and 250 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:38,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:40,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:42,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:44,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:47,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:49,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:51,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:53,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:53,015 INFO L93 Difference]: Finished difference Result 294 states and 321 transitions. [2021-11-07 09:02:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:02:53,015 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:02:53,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:53,016 INFO L225 Difference]: With dead ends: 294 [2021-11-07 09:02:53,016 INFO L226 Difference]: Without dead ends: 292 [2021-11-07 09:02:53,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1261.01ms TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-11-07 09:02:53,017 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 163 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 12 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14893.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.86ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15755.02ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:53,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 909 Invalid, 321 Unknown, 0 Unchecked, 3.86ms Time], IncrementalHoareTripleChecker [12 Valid, 302 Invalid, 7 Unknown, 0 Unchecked, 15755.02ms Time] [2021-11-07 09:02:53,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-07 09:02:53,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 268. [2021-11-07 09:02:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 258 states have (on average 1.1511627906976745) internal successors, (297), 267 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:53,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 297 transitions. [2021-11-07 09:02:53,025 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 297 transitions. Word has length 51 [2021-11-07 09:02:53,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:53,025 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 297 transitions. [2021-11-07 09:02:53,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:53,026 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 297 transitions. [2021-11-07 09:02:53,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:02:53,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:53,026 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] [2021-11-07 09:02:53,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 09:02:53,026 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:02:53,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:53,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1794730536, now seen corresponding path program 1 times [2021-11-07 09:02:53,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:53,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726511220] [2021-11-07 09:02:53,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:53,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:53,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:53,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726511220] [2021-11-07 09:02:53,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726511220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:53,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:53,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:02:53,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405159295] [2021-11-07 09:02:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:53,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:02:53,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:02:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:02:53,528 INFO L87 Difference]: Start difference. First operand 268 states and 297 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:55,569 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 [] [2021-11-07 09:02:57,696 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 [] [2021-11-07 09:02:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:58,762 INFO L93 Difference]: Finished difference Result 356 states and 387 transitions. [2021-11-07 09:02:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:02:58,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:02:58,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:58,763 INFO L225 Difference]: With dead ends: 356 [2021-11-07 09:02:58,763 INFO L226 Difference]: Without dead ends: 310 [2021-11-07 09:02:58,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 380.99ms TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:02:58,764 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 171 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4695.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4969.95ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:58,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 596 Invalid, 293 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [17 Valid, 274 Invalid, 2 Unknown, 0 Unchecked, 4969.95ms Time] [2021-11-07 09:02:58,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-07 09:02:58,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 272. [2021-11-07 09:02:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 262 states have (on average 1.1488549618320612) internal successors, (301), 271 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 301 transitions. [2021-11-07 09:02:58,773 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 301 transitions. Word has length 51 [2021-11-07 09:02:58,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:58,773 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 301 transitions. [2021-11-07 09:02:58,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:02:58,774 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 301 transitions. [2021-11-07 09:02:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:02:58,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:58,774 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] [2021-11-07 09:02:58,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 09:02:58,774 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:02:58,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:58,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1623702232, now seen corresponding path program 1 times [2021-11-07 09:02:58,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:58,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737554930] [2021-11-07 09:02:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:58,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:03:00,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:00,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737554930] [2021-11-07 09:03:00,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737554930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:00,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:00,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:03:00,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824155797] [2021-11-07 09:03:00,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:00,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:03:00,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:03:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:03:00,102 INFO L87 Difference]: Start difference. First operand 272 states and 301 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:02,149 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 [] [2021-11-07 09:03:04,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:06,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:08,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:10,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:12,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:15,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:03:15,721 INFO L93 Difference]: Finished difference Result 399 states and 431 transitions. [2021-11-07 09:03:15,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:03:15,721 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:03:15,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:03:15,723 INFO L225 Difference]: With dead ends: 399 [2021-11-07 09:03:15,723 INFO L226 Difference]: Without dead ends: 383 [2021-11-07 09:03:15,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1822.45ms TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2021-11-07 09:03:15,724 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 316 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 50 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13438.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.91ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14254.57ms IncrementalHoareTripleChecker+Time [2021-11-07 09:03:15,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 1033 Invalid, 576 Unknown, 0 Unchecked, 5.91ms Time], IncrementalHoareTripleChecker [50 Valid, 520 Invalid, 6 Unknown, 0 Unchecked, 14254.57ms Time] [2021-11-07 09:03:15,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-07 09:03:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 334. [2021-11-07 09:03:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 324 states have (on average 1.1203703703703705) internal successors, (363), 333 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 363 transitions. [2021-11-07 09:03:15,739 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 363 transitions. Word has length 51 [2021-11-07 09:03:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:03:15,739 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 363 transitions. [2021-11-07 09:03:15,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 363 transitions. [2021-11-07 09:03:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:03:15,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:03:15,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:03:15,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 09:03:15,741 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:03:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:03:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1623761814, now seen corresponding path program 1 times [2021-11-07 09:03:15,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:03:15,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195388844] [2021-11-07 09:03:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:03:15,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:03:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:03:17,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:17,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195388844] [2021-11-07 09:03:17,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195388844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:17,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:17,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 09:03:17,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756347020] [2021-11-07 09:03:17,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:17,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 09:03:17,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:17,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 09:03:17,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:03:17,927 INFO L87 Difference]: Start difference. First operand 334 states and 363 transitions. Second operand has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:20,016 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 [] [2021-11-07 09:03:22,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:24,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:26,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:28,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:30,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:32,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:37,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:03:37,560 INFO L93 Difference]: Finished difference Result 408 states and 436 transitions. [2021-11-07 09:03:37,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 09:03:37,560 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:03:37,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:03:37,561 INFO L225 Difference]: With dead ends: 408 [2021-11-07 09:03:37,561 INFO L226 Difference]: Without dead ends: 395 [2021-11-07 09:03:37,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 3408.37ms TimeCoverageRelationStatistics Valid=289, Invalid=1271, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 09:03:37,562 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 427 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 73 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16284.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.85ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17276.32ms IncrementalHoareTripleChecker+Time [2021-11-07 09:03:37,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 1569 Invalid, 883 Unknown, 0 Unchecked, 8.85ms Time], IncrementalHoareTripleChecker [73 Valid, 803 Invalid, 7 Unknown, 0 Unchecked, 17276.32ms Time] [2021-11-07 09:03:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-07 09:03:37,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 335. [2021-11-07 09:03:37,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 325 states have (on average 1.12) internal successors, (364), 334 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:37,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 364 transitions. [2021-11-07 09:03:37,573 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 364 transitions. Word has length 51 [2021-11-07 09:03:37,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:03:37,574 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 364 transitions. [2021-11-07 09:03:37,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:37,574 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 364 transitions. [2021-11-07 09:03:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:03:37,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:03:37,574 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] [2021-11-07 09:03:37,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 09:03:37,575 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:03:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:03:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1623803520, now seen corresponding path program 1 times [2021-11-07 09:03:37,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:03:37,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939404547] [2021-11-07 09:03:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:03:37,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:03:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:03:40,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:40,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939404547] [2021-11-07 09:03:40,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939404547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:40,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:40,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 09:03:40,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080147666] [2021-11-07 09:03:40,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:40,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 09:03:40,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:40,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 09:03:40,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:03:40,172 INFO L87 Difference]: Start difference. First operand 335 states and 364 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:03:42,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:44,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:46,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:48,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:50,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:52,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:54,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:57,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:59,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:01,130 INFO L93 Difference]: Finished difference Result 482 states and 525 transitions. [2021-11-07 09:04:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:04:01,131 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:04:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:01,132 INFO L225 Difference]: With dead ends: 482 [2021-11-07 09:04:01,132 INFO L226 Difference]: Without dead ends: 480 [2021-11-07 09:04:01,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1071.05ms TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-11-07 09:04:01,133 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 313 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 17 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19249.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.21ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20346.22ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:01,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 1445 Invalid, 535 Unknown, 0 Unchecked, 5.21ms Time], IncrementalHoareTripleChecker [17 Valid, 509 Invalid, 9 Unknown, 0 Unchecked, 20346.22ms Time] [2021-11-07 09:04:01,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-07 09:04:01,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 413. [2021-11-07 09:04:01,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 403 states have (on average 1.1364764267990075) internal successors, (458), 412 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 458 transitions. [2021-11-07 09:04:01,149 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 458 transitions. Word has length 51 [2021-11-07 09:04:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:01,149 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 458 transitions. [2021-11-07 09:04:01,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 458 transitions. [2021-11-07 09:04:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:04:01,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:01,150 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] [2021-11-07 09:04:01,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 09:04:01,150 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:04:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:01,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2130308031, now seen corresponding path program 1 times [2021-11-07 09:04:01,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:01,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508698812] [2021-11-07 09:04:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:01,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:04:01,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:01,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508698812] [2021-11-07 09:04:01,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508698812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:01,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:01,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:04:01,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279292191] [2021-11-07 09:04:01,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:01,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:04:01,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:01,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:04:01,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:04:01,735 INFO L87 Difference]: Start difference. First operand 413 states and 458 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:03,778 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 [] [2021-11-07 09:04:05,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:08,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:10,159 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 [] [2021-11-07 09:04:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:11,897 INFO L93 Difference]: Finished difference Result 540 states and 584 transitions. [2021-11-07 09:04:11,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:04:11,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 09:04:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:11,898 INFO L225 Difference]: With dead ends: 540 [2021-11-07 09:04:11,898 INFO L226 Difference]: Without dead ends: 383 [2021-11-07 09:04:11,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 665.91ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-11-07 09:04:11,899 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 268 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9141.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.78ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9705.53ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:11,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 1030 Invalid, 453 Unknown, 0 Unchecked, 4.78ms Time], IncrementalHoareTripleChecker [9 Valid, 440 Invalid, 4 Unknown, 0 Unchecked, 9705.53ms Time] [2021-11-07 09:04:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-07 09:04:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 332. [2021-11-07 09:04:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 322 states have (on average 1.1180124223602483) internal successors, (360), 331 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 360 transitions. [2021-11-07 09:04:11,910 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 360 transitions. Word has length 51 [2021-11-07 09:04:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:11,911 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 360 transitions. [2021-11-07 09:04:11,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:11,911 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 360 transitions. [2021-11-07 09:04:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 09:04:11,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:11,912 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] [2021-11-07 09:04:11,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 09:04:11,912 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:04:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:11,912 INFO L85 PathProgramCache]: Analyzing trace with hash 580617946, now seen corresponding path program 1 times [2021-11-07 09:04:11,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:11,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137771874] [2021-11-07 09:04:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:11,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:04:12,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:12,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137771874] [2021-11-07 09:04:12,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137771874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:12,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:12,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:04:12,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614132115] [2021-11-07 09:04:12,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:12,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:04:12,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:12,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:04:12,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:04:12,226 INFO L87 Difference]: Start difference. First operand 332 states and 360 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:14,268 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 [] [2021-11-07 09:04:16,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:17,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:17,010 INFO L93 Difference]: Finished difference Result 360 states and 385 transitions. [2021-11-07 09:04:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:04:17,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-07 09:04:17,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:17,011 INFO L225 Difference]: With dead ends: 360 [2021-11-07 09:04:17,011 INFO L226 Difference]: Without dead ends: 358 [2021-11-07 09:04:17,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 144.29ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:04:17,012 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 69 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4433.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4697.66ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:17,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 527 Invalid, 144 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 2 Unknown, 0 Unchecked, 4697.66ms Time] [2021-11-07 09:04:17,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-07 09:04:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 334. [2021-11-07 09:04:17,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 324 states have (on average 1.117283950617284) internal successors, (362), 333 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 362 transitions. [2021-11-07 09:04:17,024 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 362 transitions. Word has length 53 [2021-11-07 09:04:17,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:17,024 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 362 transitions. [2021-11-07 09:04:17,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 362 transitions. [2021-11-07 09:04:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 09:04:17,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:17,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:04:17,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 09:04:17,026 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:04:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash 677957058, now seen corresponding path program 1 times [2021-11-07 09:04:17,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:17,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566783147] [2021-11-07 09:04:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:17,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:04:17,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:17,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566783147] [2021-11-07 09:04:17,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566783147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:17,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:17,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:04:17,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478747130] [2021-11-07 09:04:17,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:17,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:04:17,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:17,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:04:17,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:04:17,634 INFO L87 Difference]: Start difference. First operand 334 states and 362 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:19,676 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 [] [2021-11-07 09:04:21,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:23,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:24,982 INFO L93 Difference]: Finished difference Result 396 states and 424 transitions. [2021-11-07 09:04:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 09:04:24,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-07 09:04:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:24,983 INFO L225 Difference]: With dead ends: 396 [2021-11-07 09:04:24,983 INFO L226 Difference]: Without dead ends: 369 [2021-11-07 09:04:24,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 510.92ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:04:24,984 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 167 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 22 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6614.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.46ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7033.53ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:24,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 617 Invalid, 274 Unknown, 0 Unchecked, 2.46ms Time], IncrementalHoareTripleChecker [22 Valid, 249 Invalid, 3 Unknown, 0 Unchecked, 7033.53ms Time] [2021-11-07 09:04:24,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-07 09:04:24,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 334. [2021-11-07 09:04:24,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 324 states have (on average 1.1141975308641976) internal successors, (361), 333 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 361 transitions. [2021-11-07 09:04:24,995 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 361 transitions. Word has length 53 [2021-11-07 09:04:24,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:24,995 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 361 transitions. [2021-11-07 09:04:24,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:24,995 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 361 transitions. [2021-11-07 09:04:24,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 09:04:24,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:24,996 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] [2021-11-07 09:04:24,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 09:04:24,996 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:04:24,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:24,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1379556932, now seen corresponding path program 1 times [2021-11-07 09:04:24,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:24,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932531150] [2021-11-07 09:04:24,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:24,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:04:26,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:26,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932531150] [2021-11-07 09:04:26,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932531150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:26,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:26,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:04:26,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850867851] [2021-11-07 09:04:26,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:26,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:04:26,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:26,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:04:26,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:04:26,105 INFO L87 Difference]: Start difference. First operand 334 states and 361 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:28,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:30,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:32,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:34,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:36,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:38,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:40,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:43,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:43,886 INFO L93 Difference]: Finished difference Result 360 states and 386 transitions. [2021-11-07 09:04:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:04:43,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-07 09:04:43,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:43,887 INFO L225 Difference]: With dead ends: 360 [2021-11-07 09:04:43,888 INFO L226 Difference]: Without dead ends: 344 [2021-11-07 09:04:43,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1714.38ms TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-11-07 09:04:43,888 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 237 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 30 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15569.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.59ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16526.56ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:43,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 1076 Invalid, 574 Unknown, 0 Unchecked, 5.59ms Time], IncrementalHoareTripleChecker [30 Valid, 537 Invalid, 7 Unknown, 0 Unchecked, 16526.56ms Time] [2021-11-07 09:04:43,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-07 09:04:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 293. [2021-11-07 09:04:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 283 states have (on average 1.1201413427561837) internal successors, (317), 292 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 317 transitions. [2021-11-07 09:04:43,903 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 317 transitions. Word has length 53 [2021-11-07 09:04:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:43,903 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 317 transitions. [2021-11-07 09:04:43,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 317 transitions. [2021-11-07 09:04:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 09:04:43,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:43,904 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] [2021-11-07 09:04:43,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 09:04:43,906 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:04:43,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:43,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1402189186, now seen corresponding path program 1 times [2021-11-07 09:04:43,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:43,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400366491] [2021-11-07 09:04:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:43,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:04:46,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:46,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400366491] [2021-11-07 09:04:46,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400366491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:46,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:46,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:04:46,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198479215] [2021-11-07 09:04:46,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:46,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:04:46,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:04:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:04:46,861 INFO L87 Difference]: Start difference. First operand 293 states and 317 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:48,910 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 [] [2021-11-07 09:04:51,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:53,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:55,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:57,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:57,343 INFO L93 Difference]: Finished difference Result 383 states and 407 transitions. [2021-11-07 09:04:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:04:57,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-07 09:04:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:57,344 INFO L225 Difference]: With dead ends: 383 [2021-11-07 09:04:57,344 INFO L226 Difference]: Without dead ends: 381 [2021-11-07 09:04:57,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1379.76ms TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:04:57,345 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 412 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9196.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9706.84ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:57,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1250 Invalid, 457 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [17 Valid, 436 Invalid, 4 Unknown, 0 Unchecked, 9706.84ms Time] [2021-11-07 09:04:57,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-07 09:04:57,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 296. [2021-11-07 09:04:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 286 states have (on average 1.1223776223776223) internal successors, (321), 295 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 321 transitions. [2021-11-07 09:04:57,356 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 321 transitions. Word has length 53 [2021-11-07 09:04:57,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:57,356 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 321 transitions. [2021-11-07 09:04:57,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 321 transitions. [2021-11-07 09:04:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 09:04:57,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:57,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:04:57,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 09:04:57,357 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:04:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash -928229713, now seen corresponding path program 1 times [2021-11-07 09:04:57,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:57,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914164114] [2021-11-07 09:04:57,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:57,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:05:01,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:01,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914164114] [2021-11-07 09:05:01,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914164114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:01,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:01,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 09:05:01,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080477105] [2021-11-07 09:05:01,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:01,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:05:01,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:01,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:05:01,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:05:01,040 INFO L87 Difference]: Start difference. First operand 296 states and 321 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:03,086 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 [] [2021-11-07 09:05:05,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:07,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:09,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:11,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:13,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:15,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:17,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:20,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:26,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:26,055 INFO L93 Difference]: Finished difference Result 548 states and 579 transitions. [2021-11-07 09:05:26,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 09:05:26,055 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 09:05:26,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:26,056 INFO L225 Difference]: With dead ends: 548 [2021-11-07 09:05:26,056 INFO L226 Difference]: Without dead ends: 432 [2021-11-07 09:05:26,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 4341.25ms TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 09:05:26,058 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 500 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 62 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20206.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.51ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21377.32ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:26,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 1658 Invalid, 937 Unknown, 0 Unchecked, 9.51ms Time], IncrementalHoareTripleChecker [62 Valid, 866 Invalid, 9 Unknown, 0 Unchecked, 21377.32ms Time] [2021-11-07 09:05:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-07 09:05:26,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 296. [2021-11-07 09:05:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 286 states have (on average 1.1153846153846154) internal successors, (319), 295 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:26,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 319 transitions. [2021-11-07 09:05:26,070 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 319 transitions. Word has length 54 [2021-11-07 09:05:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:26,071 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 319 transitions. [2021-11-07 09:05:26,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:26,071 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 319 transitions. [2021-11-07 09:05:26,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 09:05:26,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:26,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:05:26,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 09:05:26,072 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:05:26,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:26,073 INFO L85 PathProgramCache]: Analyzing trace with hash -248171343, now seen corresponding path program 1 times [2021-11-07 09:05:26,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:26,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872414953] [2021-11-07 09:05:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:26,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:05:26,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:26,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872414953] [2021-11-07 09:05:26,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872414953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:26,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:26,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:05:26,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501101274] [2021-11-07 09:05:26,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:26,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:05:26,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:26,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:05:26,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:05:26,326 INFO L87 Difference]: Start difference. First operand 296 states and 319 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:28,379 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 [] [2021-11-07 09:05:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:28,864 INFO L93 Difference]: Finished difference Result 408 states and 441 transitions. [2021-11-07 09:05:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:05:28,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 09:05:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:28,865 INFO L225 Difference]: With dead ends: 408 [2021-11-07 09:05:28,866 INFO L226 Difference]: Without dead ends: 288 [2021-11-07 09:05:28,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:05:28,866 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 37 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2334.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2491.13ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:28,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 234 Invalid, 124 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [15 Valid, 108 Invalid, 1 Unknown, 0 Unchecked, 2491.13ms Time] [2021-11-07 09:05:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-07 09:05:28,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-11-07 09:05:28,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 278 states have (on average 1.10431654676259) internal successors, (307), 287 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:28,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 307 transitions. [2021-11-07 09:05:28,877 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 307 transitions. Word has length 54 [2021-11-07 09:05:28,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:28,877 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 307 transitions. [2021-11-07 09:05:28,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:28,877 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 307 transitions. [2021-11-07 09:05:28,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 09:05:28,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:28,878 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] [2021-11-07 09:05:28,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 09:05:28,878 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:05:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:28,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1115787996, now seen corresponding path program 1 times [2021-11-07 09:05:28,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:28,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823447409] [2021-11-07 09:05:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:28,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:05:32,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:32,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823447409] [2021-11-07 09:05:32,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823447409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:32,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:32,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 09:05:32,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708098414] [2021-11-07 09:05:32,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:32,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 09:05:32,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 09:05:32,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:05:32,487 INFO L87 Difference]: Start difference. First operand 288 states and 307 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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) [2021-11-07 09:05:34,531 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 [] [2021-11-07 09:05:36,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:38,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:40,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:43,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:45,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:47,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:49,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:51,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:54,954 INFO L93 Difference]: Finished difference Result 390 states and 409 transitions. [2021-11-07 09:05:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 09:05:54,954 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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 [2021-11-07 09:05:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:54,955 INFO L225 Difference]: With dead ends: 390 [2021-11-07 09:05:54,955 INFO L226 Difference]: Without dead ends: 388 [2021-11-07 09:05:54,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2094.33ms TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2021-11-07 09:05:54,956 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 186 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 27 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20012.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.14ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21271.05ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:54,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 1800 Invalid, 805 Unknown, 0 Unchecked, 7.14ms Time], IncrementalHoareTripleChecker [27 Valid, 769 Invalid, 9 Unknown, 0 Unchecked, 21271.05ms Time] [2021-11-07 09:05:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-07 09:05:54,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 334. [2021-11-07 09:05:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 324 states have (on average 1.095679012345679) internal successors, (355), 333 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:05:54,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 355 transitions. [2021-11-07 09:05:54,970 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 355 transitions. Word has length 55 [2021-11-07 09:05:54,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:54,970 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 355 transitions. [2021-11-07 09:05:54,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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) [2021-11-07 09:05:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 355 transitions. [2021-11-07 09:05:54,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 09:05:54,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:54,971 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] [2021-11-07 09:05:54,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 09:05:54,971 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:05:54,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:54,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1758616887, now seen corresponding path program 1 times [2021-11-07 09:05:54,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:54,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928045659] [2021-11-07 09:05:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:54,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:05:56,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:56,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928045659] [2021-11-07 09:05:56,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928045659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:56,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:56,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 09:05:56,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922779752] [2021-11-07 09:05:56,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:56,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 09:05:56,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:56,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 09:05:56,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:05:56,176 INFO L87 Difference]: Start difference. First operand 334 states and 355 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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) [2021-11-07 09:05:58,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:00,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:02,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:04,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:06,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:06:09,511 INFO L93 Difference]: Finished difference Result 473 states and 501 transitions. [2021-11-07 09:06:09,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 09:06:09,512 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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 [2021-11-07 09:06:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:06:09,512 INFO L225 Difference]: With dead ends: 473 [2021-11-07 09:06:09,513 INFO L226 Difference]: Without dead ends: 351 [2021-11-07 09:06:09,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1692.29ms TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-11-07 09:06:09,513 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 294 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 47 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11420.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.35ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12071.07ms IncrementalHoareTripleChecker+Time [2021-11-07 09:06:09,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 799 Invalid, 452 Unknown, 0 Unchecked, 5.35ms Time], IncrementalHoareTripleChecker [47 Valid, 400 Invalid, 5 Unknown, 0 Unchecked, 12071.07ms Time] [2021-11-07 09:06:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-07 09:06:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 320. [2021-11-07 09:06:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 310 states have (on average 1.0903225806451613) internal successors, (338), 319 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 338 transitions. [2021-11-07 09:06:09,526 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 338 transitions. Word has length 55 [2021-11-07 09:06:09,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:06:09,527 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 338 transitions. [2021-11-07 09:06:09,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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) [2021-11-07 09:06:09,527 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 338 transitions. [2021-11-07 09:06:09,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 09:06:09,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:06:09,527 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] [2021-11-07 09:06:09,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-07 09:06:09,527 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:06:09,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:06:09,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1632186344, now seen corresponding path program 1 times [2021-11-07 09:06:09,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:06:09,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810099373] [2021-11-07 09:06:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:06:09,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:06:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:06:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:06:10,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:06:10,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810099373] [2021-11-07 09:06:10,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810099373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:06:10,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:06:10,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:06:10,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969340230] [2021-11-07 09:06:10,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:06:10,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:06:10,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:06:10,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:06:10,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:06:10,204 INFO L87 Difference]: Start difference. First operand 320 states and 338 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 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) [2021-11-07 09:06:12,250 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 [] [2021-11-07 09:06:14,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:16,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:19,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:06:19,114 INFO L93 Difference]: Finished difference Result 416 states and 436 transitions. [2021-11-07 09:06:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 09:06:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 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 [2021-11-07 09:06:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:06:19,115 INFO L225 Difference]: With dead ends: 416 [2021-11-07 09:06:19,115 INFO L226 Difference]: Without dead ends: 410 [2021-11-07 09:06:19,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1169.38ms TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2021-11-07 09:06:19,116 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 206 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 109 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7525.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8008.45ms IncrementalHoareTripleChecker+Time [2021-11-07 09:06:19,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 818 Invalid, 803 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [109 Valid, 691 Invalid, 3 Unknown, 0 Unchecked, 8008.45ms Time] [2021-11-07 09:06:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-07 09:06:19,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 316. [2021-11-07 09:06:19,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 307 states have (on average 1.0846905537459284) internal successors, (333), 315 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 333 transitions. [2021-11-07 09:06:19,130 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 333 transitions. Word has length 56 [2021-11-07 09:06:19,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:06:19,131 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 333 transitions. [2021-11-07 09:06:19,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 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) [2021-11-07 09:06:19,131 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 333 transitions. [2021-11-07 09:06:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 09:06:19,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:06:19,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:06:19,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 09:06:19,132 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:06:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:06:19,132 INFO L85 PathProgramCache]: Analyzing trace with hash -787246305, now seen corresponding path program 1 times [2021-11-07 09:06:19,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:06:19,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100030630] [2021-11-07 09:06:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:06:19,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:06:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:06:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:06:19,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:06:19,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100030630] [2021-11-07 09:06:19,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100030630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:06:19,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:06:19,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:06:19,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771942555] [2021-11-07 09:06:19,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:06:19,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:06:19,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:06:19,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:06:19,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:06:19,879 INFO L87 Difference]: Start difference. First operand 316 states and 333 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:21,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:24,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:26,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:28,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:30,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:06:31,540 INFO L93 Difference]: Finished difference Result 375 states and 391 transitions. [2021-11-07 09:06:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:06:31,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 09:06:31,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:06:31,542 INFO L225 Difference]: With dead ends: 375 [2021-11-07 09:06:31,542 INFO L226 Difference]: Without dead ends: 316 [2021-11-07 09:06:31,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 718.41ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:06:31,542 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 126 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10556.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11227.67ms IncrementalHoareTripleChecker+Time [2021-11-07 09:06:31,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 757 Invalid, 185 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [9 Valid, 171 Invalid, 5 Unknown, 0 Unchecked, 11227.67ms Time] [2021-11-07 09:06:31,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-07 09:06:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-11-07 09:06:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 307 states have (on average 1.0781758957654723) internal successors, (331), 315 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 331 transitions. [2021-11-07 09:06:31,556 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 331 transitions. Word has length 57 [2021-11-07 09:06:31,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:06:31,556 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 331 transitions. [2021-11-07 09:06:31,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 331 transitions. [2021-11-07 09:06:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 09:06:31,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:06:31,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:06:31,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 09:06:31,557 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:06:31,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:06:31,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1469695334, now seen corresponding path program 1 times [2021-11-07 09:06:31,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:06:31,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329908661] [2021-11-07 09:06:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:06:31,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:06:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:06:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:06:34,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:06:34,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329908661] [2021-11-07 09:06:34,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329908661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:06:34,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:06:34,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:06:34,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020159018] [2021-11-07 09:06:34,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:06:34,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:06:34,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:06:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:06:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:06:34,508 INFO L87 Difference]: Start difference. First operand 316 states and 331 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:36,555 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 [] [2021-11-07 09:06:38,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:40,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:42,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:45,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:47,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:06:49,287 INFO L93 Difference]: Finished difference Result 336 states and 349 transitions. [2021-11-07 09:06:49,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:06:49,288 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 09:06:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:06:49,289 INFO L225 Difference]: With dead ends: 336 [2021-11-07 09:06:49,289 INFO L226 Difference]: Without dead ends: 282 [2021-11-07 09:06:49,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1398.29ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:06:49,289 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 315 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 38 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13070.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.35ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13898.78ms IncrementalHoareTripleChecker+Time [2021-11-07 09:06:49,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 675 Invalid, 399 Unknown, 0 Unchecked, 4.35ms Time], IncrementalHoareTripleChecker [38 Valid, 355 Invalid, 6 Unknown, 0 Unchecked, 13898.78ms Time] [2021-11-07 09:06:49,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-07 09:06:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 270. [2021-11-07 09:06:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 261 states have (on average 1.0881226053639848) internal successors, (284), 269 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 284 transitions. [2021-11-07 09:06:49,301 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 284 transitions. Word has length 57 [2021-11-07 09:06:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:06:49,301 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 284 transitions. [2021-11-07 09:06:49,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:06:49,301 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 284 transitions. [2021-11-07 09:06:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 09:06:49,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:06:49,302 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] [2021-11-07 09:06:49,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-07 09:06:49,302 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:06:49,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:06:49,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1632577378, now seen corresponding path program 1 times [2021-11-07 09:06:49,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:06:49,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887527236] [2021-11-07 09:06:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:06:49,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:06:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:06:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:06:54,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:06:54,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887527236] [2021-11-07 09:06:54,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887527236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:06:54,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:06:54,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 09:06:54,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527052344] [2021-11-07 09:06:54,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:06:54,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 09:06:54,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:06:54,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 09:06:54,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-11-07 09:06:54,114 INFO L87 Difference]: Start difference. First operand 270 states and 284 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 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) [2021-11-07 09:06:56,161 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 [] [2021-11-07 09:06:58,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:00,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:02,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:04,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:06,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:08,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:11,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:13,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:15,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:18,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:18,283 INFO L93 Difference]: Finished difference Result 272 states and 285 transitions. [2021-11-07 09:07:18,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:07:18,283 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 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 [2021-11-07 09:07:18,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:18,284 INFO L225 Difference]: With dead ends: 272 [2021-11-07 09:07:18,284 INFO L226 Difference]: Without dead ends: 240 [2021-11-07 09:07:18,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2770.89ms TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-11-07 09:07:18,285 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 192 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 31 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21574.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22898.05ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:18,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 1182 Invalid, 551 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [31 Valid, 510 Invalid, 10 Unknown, 0 Unchecked, 22898.05ms Time] [2021-11-07 09:07:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-07 09:07:18,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-07 09:07:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 231 states have (on average 1.0952380952380953) internal successors, (253), 239 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 253 transitions. [2021-11-07 09:07:18,295 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 253 transitions. Word has length 58 [2021-11-07 09:07:18,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:18,296 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 253 transitions. [2021-11-07 09:07:18,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 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) [2021-11-07 09:07:18,296 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 253 transitions. [2021-11-07 09:07:18,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 09:07:18,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:18,297 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] [2021-11-07 09:07:18,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-07 09:07:18,298 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:07:18,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:18,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1013008931, now seen corresponding path program 1 times [2021-11-07 09:07:18,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:18,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824936610] [2021-11-07 09:07:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:18,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:07:20,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:20,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824936610] [2021-11-07 09:07:20,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824936610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:20,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:20,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:07:20,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509219598] [2021-11-07 09:07:20,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:20,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:07:20,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:20,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:07:20,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:07:20,071 INFO L87 Difference]: Start difference. First operand 240 states and 253 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 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) [2021-11-07 09:07:22,120 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 [] [2021-11-07 09:07:24,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:26,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:28,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:30,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:32,756 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 [] [2021-11-07 09:07:35,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:35,804 INFO L93 Difference]: Finished difference Result 250 states and 262 transitions. [2021-11-07 09:07:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:07:35,805 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 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 [2021-11-07 09:07:35,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:35,805 INFO L225 Difference]: With dead ends: 250 [2021-11-07 09:07:35,805 INFO L226 Difference]: Without dead ends: 175 [2021-11-07 09:07:35,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2613.13ms TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-11-07 09:07:35,806 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 157 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 25 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13054.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.14ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13878.97ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:35,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 801 Invalid, 376 Unknown, 0 Unchecked, 4.14ms Time], IncrementalHoareTripleChecker [25 Valid, 345 Invalid, 6 Unknown, 0 Unchecked, 13878.97ms Time] [2021-11-07 09:07:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-07 09:07:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-07 09:07:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 166 states have (on average 1.1204819277108433) internal successors, (186), 174 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 186 transitions. [2021-11-07 09:07:35,812 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 186 transitions. Word has length 60 [2021-11-07 09:07:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:35,813 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 186 transitions. [2021-11-07 09:07:35,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 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) [2021-11-07 09:07:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 186 transitions. [2021-11-07 09:07:35,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 09:07:35,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:35,813 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] [2021-11-07 09:07:35,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-07 09:07:35,814 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:07:35,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:35,814 INFO L85 PathProgramCache]: Analyzing trace with hash -857306152, now seen corresponding path program 1 times [2021-11-07 09:07:35,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:35,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708061093] [2021-11-07 09:07:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:35,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:07:38,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:38,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708061093] [2021-11-07 09:07:38,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708061093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:38,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:38,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:07:38,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672764474] [2021-11-07 09:07:38,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:38,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:07:38,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:07:38,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:07:38,500 INFO L87 Difference]: Start difference. First operand 175 states and 186 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 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) [2021-11-07 09:07:40,544 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 [] [2021-11-07 09:07:42,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:44,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:46,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:49,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:52,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:52,955 INFO L93 Difference]: Finished difference Result 230 states and 243 transitions. [2021-11-07 09:07:52,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 09:07:52,955 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 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 [2021-11-07 09:07:52,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:52,956 INFO L225 Difference]: With dead ends: 230 [2021-11-07 09:07:52,956 INFO L226 Difference]: Without dead ends: 172 [2021-11-07 09:07:52,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 3193.22ms TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 09:07:52,957 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 372 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 58 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11093.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.28ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11799.64ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:52,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 742 Invalid, 534 Unknown, 0 Unchecked, 4.28ms Time], IncrementalHoareTripleChecker [58 Valid, 471 Invalid, 5 Unknown, 0 Unchecked, 11799.64ms Time] [2021-11-07 09:07:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-07 09:07:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2021-11-07 09:07:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 160 states have (on average 1.1125) internal successors, (178), 167 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:07:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2021-11-07 09:07:52,963 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 61 [2021-11-07 09:07:52,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:52,963 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 178 transitions. [2021-11-07 09:07:52,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 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) [2021-11-07 09:07:52,963 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 178 transitions. [2021-11-07 09:07:52,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 09:07:52,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:52,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:07:52,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-07 09:07:52,964 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:07:52,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:52,964 INFO L85 PathProgramCache]: Analyzing trace with hash 171837296, now seen corresponding path program 1 times [2021-11-07 09:07:52,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:52,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441201888] [2021-11-07 09:07:52,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:52,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:07:54,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:54,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441201888] [2021-11-07 09:07:54,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441201888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:54,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:54,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:07:54,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661499468] [2021-11-07 09:07:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:54,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:07:54,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:54,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:07:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:07:54,048 INFO L87 Difference]: Start difference. First operand 168 states and 178 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 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) [2021-11-07 09:07:56,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:58,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:00,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:02,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:04,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:06,746 INFO L93 Difference]: Finished difference Result 307 states and 317 transitions. [2021-11-07 09:08:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 09:08:06,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 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 [2021-11-07 09:08:06,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:06,748 INFO L225 Difference]: With dead ends: 307 [2021-11-07 09:08:06,748 INFO L226 Difference]: Without dead ends: 260 [2021-11-07 09:08:06,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1388.98ms TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2021-11-07 09:08:06,748 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 417 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 46 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11012.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11709.85ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:06,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 804 Invalid, 439 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [46 Valid, 388 Invalid, 5 Unknown, 0 Unchecked, 11709.85ms Time] [2021-11-07 09:08:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-07 09:08:06,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 168. [2021-11-07 09:08:06,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 160 states have (on average 1.10625) internal successors, (177), 167 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:08:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 177 transitions. [2021-11-07 09:08:06,755 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 177 transitions. Word has length 69 [2021-11-07 09:08:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:06,755 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 177 transitions. [2021-11-07 09:08:06,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 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) [2021-11-07 09:08:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 177 transitions. [2021-11-07 09:08:06,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 09:08:06,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:06,756 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] [2021-11-07 09:08:06,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-07 09:08:06,756 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:08:06,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1048466312, now seen corresponding path program 1 times [2021-11-07 09:08:06,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:06,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960392898] [2021-11-07 09:08:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:06,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:08:08,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:08,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960392898] [2021-11-07 09:08:08,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960392898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:08,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:08,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 09:08:08,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155756491] [2021-11-07 09:08:08,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:08,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 09:08:08,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:08,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 09:08:08,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-07 09:08:08,842 INFO L87 Difference]: Start difference. First operand 168 states and 177 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 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) [2021-11-07 09:08:10,884 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 [] [2021-11-07 09:08:13,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:15,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:17,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:19,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:21,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:23,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:25,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:27,846 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:33,096 INFO L93 Difference]: Finished difference Result 284 states and 294 transitions. [2021-11-07 09:08:33,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 09:08:33,097 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 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 [2021-11-07 09:08:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:33,097 INFO L225 Difference]: With dead ends: 284 [2021-11-07 09:08:33,097 INFO L226 Difference]: Without dead ends: 242 [2021-11-07 09:08:33,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 3265.49ms TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 09:08:33,098 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 412 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 63 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20587.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.24ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21805.54ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:33,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1368 Invalid, 916 Unknown, 0 Unchecked, 9.24ms Time], IncrementalHoareTripleChecker [63 Valid, 844 Invalid, 9 Unknown, 0 Unchecked, 21805.54ms Time] [2021-11-07 09:08:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-07 09:08:33,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 175. [2021-11-07 09:08:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 167 states have (on average 1.1017964071856288) internal successors, (184), 174 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:08:33,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 184 transitions. [2021-11-07 09:08:33,105 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 184 transitions. Word has length 69 [2021-11-07 09:08:33,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:33,105 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 184 transitions. [2021-11-07 09:08:33,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 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) [2021-11-07 09:08:33,105 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 184 transitions. [2021-11-07 09:08:33,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 09:08:33,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:33,106 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] [2021-11-07 09:08:33,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-07 09:08:33,106 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:08:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash -235238369, now seen corresponding path program 1 times [2021-11-07 09:08:33,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:33,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760930856] [2021-11-07 09:08:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:33,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:35,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:08:35,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:35,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760930856] [2021-11-07 09:08:35,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760930856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:35,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:35,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 09:08:35,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883423932] [2021-11-07 09:08:35,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:35,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 09:08:35,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:35,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 09:08:35,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:08:35,546 INFO L87 Difference]: Start difference. First operand 175 states and 184 transitions. Second operand has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 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) [2021-11-07 09:08:37,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:39,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:41,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:43,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:46,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:48,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:50,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:53,903 INFO L93 Difference]: Finished difference Result 240 states and 248 transitions. [2021-11-07 09:08:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:08:53,904 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 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 [2021-11-07 09:08:53,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:53,904 INFO L225 Difference]: With dead ends: 240 [2021-11-07 09:08:53,904 INFO L226 Difference]: Without dead ends: 238 [2021-11-07 09:08:53,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2656.73ms TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-11-07 09:08:53,905 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 239 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 42 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15778.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.00ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16806.93ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:53,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 813 Invalid, 617 Unknown, 0 Unchecked, 6.00ms Time], IncrementalHoareTripleChecker [42 Valid, 568 Invalid, 7 Unknown, 0 Unchecked, 16806.93ms Time] [2021-11-07 09:08:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-07 09:08:53,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 207. [2021-11-07 09:08:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 199 states have (on average 1.0954773869346734) internal successors, (218), 206 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:08:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 218 transitions. [2021-11-07 09:08:53,914 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 218 transitions. Word has length 75 [2021-11-07 09:08:53,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:53,914 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 218 transitions. [2021-11-07 09:08:53,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 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) [2021-11-07 09:08:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 218 transitions. [2021-11-07 09:08:53,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 09:08:53,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:53,915 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] [2021-11-07 09:08:53,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-07 09:08:53,916 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:08:53,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:53,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1079243871, now seen corresponding path program 1 times [2021-11-07 09:08:53,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:53,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572498070] [2021-11-07 09:08:53,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:53,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:08:55,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:55,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572498070] [2021-11-07 09:08:55,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572498070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:55,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:55,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 09:08:55,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549319582] [2021-11-07 09:08:55,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:55,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:08:55,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:55,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:08:55,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:08:55,706 INFO L87 Difference]: Start difference. First operand 207 states and 218 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:08:57,751 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 [] [2021-11-07 09:08:59,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:01,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:04,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:06,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:08,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:10,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:09:13,850 INFO L93 Difference]: Finished difference Result 231 states and 239 transitions. [2021-11-07 09:09:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:09:13,851 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 09:09:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:09:13,851 INFO L225 Difference]: With dead ends: 231 [2021-11-07 09:09:13,851 INFO L226 Difference]: Without dead ends: 216 [2021-11-07 09:09:13,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1986.08ms TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2021-11-07 09:09:13,852 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 233 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 45 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16051.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.08ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16945.82ms IncrementalHoareTripleChecker+Time [2021-11-07 09:09:13,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1052 Invalid, 567 Unknown, 0 Unchecked, 5.08ms Time], IncrementalHoareTripleChecker [45 Valid, 515 Invalid, 7 Unknown, 0 Unchecked, 16945.82ms Time] [2021-11-07 09:09:13,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-07 09:09:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 205. [2021-11-07 09:09:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 197 states have (on average 1.0862944162436547) internal successors, (214), 204 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:09:13,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 214 transitions. [2021-11-07 09:09:13,878 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 214 transitions. Word has length 75 [2021-11-07 09:09:13,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:09:13,879 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 214 transitions. [2021-11-07 09:09:13,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:09:13,879 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 214 transitions. [2021-11-07 09:09:13,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 09:09:13,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:09:13,880 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] [2021-11-07 09:09:13,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-07 09:09:13,880 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:09:13,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:09:13,881 INFO L85 PathProgramCache]: Analyzing trace with hash 838259593, now seen corresponding path program 1 times [2021-11-07 09:09:13,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:09:13,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364574140] [2021-11-07 09:09:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:09:13,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:09:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:09:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:09:17,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:09:17,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364574140] [2021-11-07 09:09:17,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364574140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:09:17,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:09:17,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 09:09:17,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374604768] [2021-11-07 09:09:17,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:09:17,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 09:09:17,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:09:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 09:09:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:09:17,941 INFO L87 Difference]: Start difference. First operand 205 states and 214 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 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) [2021-11-07 09:09:19,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:22,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:24,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:26,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:28,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:30,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:32,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:09:36,681 INFO L93 Difference]: Finished difference Result 251 states and 258 transitions. [2021-11-07 09:09:36,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 09:09:36,682 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 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 [2021-11-07 09:09:36,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:09:36,682 INFO L225 Difference]: With dead ends: 251 [2021-11-07 09:09:36,682 INFO L226 Difference]: Without dead ends: 214 [2021-11-07 09:09:36,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 2923.29ms TimeCoverageRelationStatistics Valid=301, Invalid=1259, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 09:09:36,683 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 470 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 62 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15584.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.60ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16475.31ms IncrementalHoareTripleChecker+Time [2021-11-07 09:09:36,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 852 Invalid, 670 Unknown, 0 Unchecked, 6.60ms Time], IncrementalHoareTripleChecker [62 Valid, 601 Invalid, 7 Unknown, 0 Unchecked, 16475.31ms Time] [2021-11-07 09:09:36,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-07 09:09:36,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 198. [2021-11-07 09:09:36,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 191 states have (on average 1.0785340314136125) internal successors, (206), 197 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:09:36,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 206 transitions. [2021-11-07 09:09:36,692 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 206 transitions. Word has length 75 [2021-11-07 09:09:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:09:36,692 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 206 transitions. [2021-11-07 09:09:36,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 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) [2021-11-07 09:09:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 206 transitions. [2021-11-07 09:09:36,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 09:09:36,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:09:36,692 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] [2021-11-07 09:09:36,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-07 09:09:36,692 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:09:36,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:09:36,693 INFO L85 PathProgramCache]: Analyzing trace with hash 667231289, now seen corresponding path program 1 times [2021-11-07 09:09:36,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:09:36,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206889250] [2021-11-07 09:09:36,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:09:36,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:09:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:09:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:09:37,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:09:37,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206889250] [2021-11-07 09:09:37,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206889250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:09:37,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:09:37,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:09:37,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140640695] [2021-11-07 09:09:37,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:09:37,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:09:37,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:09:37,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:09:37,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:09:37,551 INFO L87 Difference]: Start difference. First operand 198 states and 206 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) [2021-11-07 09:09:39,601 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 [] [2021-11-07 09:09:41,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:43,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:46,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:47,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:09:47,488 INFO L93 Difference]: Finished difference Result 266 states and 274 transitions. [2021-11-07 09:09:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:09:47,489 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 [2021-11-07 09:09:47,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:09:47,489 INFO L225 Difference]: With dead ends: 266 [2021-11-07 09:09:47,490 INFO L226 Difference]: Without dead ends: 232 [2021-11-07 09:09:47,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 454.60ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:09:47,490 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 137 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9132.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.74ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9672.38ms IncrementalHoareTripleChecker+Time [2021-11-07 09:09:47,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 731 Invalid, 367 Unknown, 0 Unchecked, 3.74ms Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 4 Unknown, 0 Unchecked, 9672.38ms Time] [2021-11-07 09:09:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-07 09:09:47,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 198. [2021-11-07 09:09:47,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 191 states have (on average 1.0732984293193717) internal successors, (205), 197 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:09:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 205 transitions. [2021-11-07 09:09:47,499 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 205 transitions. Word has length 75 [2021-11-07 09:09:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:09:47,499 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 205 transitions. [2021-11-07 09:09:47,499 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) [2021-11-07 09:09:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 205 transitions. [2021-11-07 09:09:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 09:09:47,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:09:47,500 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, 1, 1, 1] [2021-11-07 09:09:47,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-07 09:09:47,500 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:09:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:09:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash 971638839, now seen corresponding path program 1 times [2021-11-07 09:09:47,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:09:47,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355470937] [2021-11-07 09:09:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:09:47,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:09:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:09:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:09:49,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:09:49,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355470937] [2021-11-07 09:09:49,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355470937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:09:49,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:09:49,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:09:49,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741410506] [2021-11-07 09:09:49,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:09:49,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:09:49,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:09:49,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:09:49,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:09:49,489 INFO L87 Difference]: Start difference. First operand 198 states and 205 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 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) [2021-11-07 09:09:51,534 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 [] [2021-11-07 09:09:53,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:55,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:57,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:00,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:02,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:04,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:06,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:08,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:10,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:10:10,911 INFO L93 Difference]: Finished difference Result 233 states and 237 transitions. [2021-11-07 09:10:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:10:10,912 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 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 [2021-11-07 09:10:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:10:10,913 INFO L225 Difference]: With dead ends: 233 [2021-11-07 09:10:10,913 INFO L226 Difference]: Without dead ends: 215 [2021-11-07 09:10:10,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1383.90ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:10:10,913 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 236 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 37 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19446.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.97ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20737.64ms IncrementalHoareTripleChecker+Time [2021-11-07 09:10:10,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 923 Invalid, 544 Unknown, 0 Unchecked, 4.97ms Time], IncrementalHoareTripleChecker [37 Valid, 498 Invalid, 9 Unknown, 0 Unchecked, 20737.64ms Time] [2021-11-07 09:10:10,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-07 09:10:10,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 197. [2021-11-07 09:10:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 190 states have (on average 1.063157894736842) internal successors, (202), 196 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:10:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 202 transitions. [2021-11-07 09:10:10,922 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 202 transitions. Word has length 75 [2021-11-07 09:10:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:10:10,922 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 202 transitions. [2021-11-07 09:10:10,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 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) [2021-11-07 09:10:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 202 transitions. [2021-11-07 09:10:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 09:10:10,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:10:10,922 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] [2021-11-07 09:10:10,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-07 09:10:10,922 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:10:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:10:10,923 INFO L85 PathProgramCache]: Analyzing trace with hash 971698421, now seen corresponding path program 1 times [2021-11-07 09:10:10,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:10:10,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536771183] [2021-11-07 09:10:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:10:10,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:10:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:10:12,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:10:12,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:10:12,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536771183] [2021-11-07 09:10:12,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536771183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:10:12,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:10:12,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:10:12,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670300197] [2021-11-07 09:10:12,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:10:12,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:10:12,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:10:12,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:10:12,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:10:12,622 INFO L87 Difference]: Start difference. First operand 197 states and 202 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 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) [2021-11-07 09:10:14,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:16,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:18,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:21,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:23,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:25,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:10:28,748 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2021-11-07 09:10:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 09:10:28,749 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 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 [2021-11-07 09:10:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:10:28,750 INFO L225 Difference]: With dead ends: 248 [2021-11-07 09:10:28,750 INFO L226 Difference]: Without dead ends: 235 [2021-11-07 09:10:28,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2407.10ms TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2021-11-07 09:10:28,750 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 388 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 28 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13421.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.90ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14262.66ms IncrementalHoareTripleChecker+Time [2021-11-07 09:10:28,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1215 Invalid, 500 Unknown, 0 Unchecked, 6.90ms Time], IncrementalHoareTripleChecker [28 Valid, 466 Invalid, 6 Unknown, 0 Unchecked, 14262.66ms Time] [2021-11-07 09:10:28,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-07 09:10:28,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 204. [2021-11-07 09:10:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 197 states have (on average 1.0609137055837563) internal successors, (209), 203 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:10:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 209 transitions. [2021-11-07 09:10:28,760 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 209 transitions. Word has length 75 [2021-11-07 09:10:28,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:10:28,761 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 209 transitions. [2021-11-07 09:10:28,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 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) [2021-11-07 09:10:28,761 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 209 transitions. [2021-11-07 09:10:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 09:10:28,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:10:28,761 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] [2021-11-07 09:10:28,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-07 09:10:28,762 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:10:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:10:28,762 INFO L85 PathProgramCache]: Analyzing trace with hash 971740127, now seen corresponding path program 1 times [2021-11-07 09:10:28,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:10:28,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282500969] [2021-11-07 09:10:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:10:28,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:10:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:10:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:10:32,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:10:32,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282500969] [2021-11-07 09:10:32,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282500969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:10:32,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:10:32,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:10:32,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312990633] [2021-11-07 09:10:32,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:10:32,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:10:32,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:10:32,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:10:32,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:10:32,511 INFO L87 Difference]: Start difference. First operand 204 states and 209 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 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) [2021-11-07 09:10:34,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:36,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:38,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:41,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:43,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:45,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:47,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:49,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:51,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:10:51,917 INFO L93 Difference]: Finished difference Result 218 states and 221 transitions. [2021-11-07 09:10:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 09:10:51,917 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 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 [2021-11-07 09:10:51,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:10:51,918 INFO L225 Difference]: With dead ends: 218 [2021-11-07 09:10:51,918 INFO L226 Difference]: Without dead ends: 216 [2021-11-07 09:10:51,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1517.53ms TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-11-07 09:10:51,919 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 430 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 49 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17446.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.16ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18588.67ms IncrementalHoareTripleChecker+Time [2021-11-07 09:10:51,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 832 Invalid, 595 Unknown, 0 Unchecked, 6.16ms Time], IncrementalHoareTripleChecker [49 Valid, 538 Invalid, 8 Unknown, 0 Unchecked, 18588.67ms Time] [2021-11-07 09:10:51,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-07 09:10:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 202. [2021-11-07 09:10:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.0561224489795917) internal successors, (207), 201 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:10:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 207 transitions. [2021-11-07 09:10:51,929 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 207 transitions. Word has length 75 [2021-11-07 09:10:51,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:10:51,929 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 207 transitions. [2021-11-07 09:10:51,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 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) [2021-11-07 09:10:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 207 transitions. [2021-11-07 09:10:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 09:10:51,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:10:51,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:10:51,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-07 09:10:51,930 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:10:51,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:10:51,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1569328993, now seen corresponding path program 1 times [2021-11-07 09:10:51,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:10:51,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672249196] [2021-11-07 09:10:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:10:51,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:10:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:10:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:10:53,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:10:53,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672249196] [2021-11-07 09:10:53,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672249196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:10:53,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:10:53,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:10:53,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675956329] [2021-11-07 09:10:53,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:10:53,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:10:53,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:10:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:10:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:10:53,025 INFO L87 Difference]: Start difference. First operand 202 states and 207 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:10:55,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:57,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:59,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:01,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:03,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:05,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:07,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:09,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:11:09,415 INFO L93 Difference]: Finished difference Result 216 states and 219 transitions. [2021-11-07 09:11:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:11:09,415 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 09:11:09,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:11:09,416 INFO L225 Difference]: With dead ends: 216 [2021-11-07 09:11:09,416 INFO L226 Difference]: Without dead ends: 203 [2021-11-07 09:11:09,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 929.21ms TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:11:09,416 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 379 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 24 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14888.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.75ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15816.58ms IncrementalHoareTripleChecker+Time [2021-11-07 09:11:09,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 776 Invalid, 359 Unknown, 0 Unchecked, 3.75ms Time], IncrementalHoareTripleChecker [24 Valid, 328 Invalid, 7 Unknown, 0 Unchecked, 15816.58ms Time] [2021-11-07 09:11:09,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-07 09:11:09,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2021-11-07 09:11:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.0471204188481675) internal successors, (200), 195 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:11:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 200 transitions. [2021-11-07 09:11:09,425 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 200 transitions. Word has length 77 [2021-11-07 09:11:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:11:09,426 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 200 transitions. [2021-11-07 09:11:09,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:11:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 200 transitions. [2021-11-07 09:11:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 09:11:09,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:11:09,427 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] [2021-11-07 09:11:09,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-07 09:11:09,427 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:11:09,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:11:09,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2012017411, now seen corresponding path program 1 times [2021-11-07 09:11:09,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:11:09,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997202682] [2021-11-07 09:11:09,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:11:09,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:11:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:11:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:11:16,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:11:16,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997202682] [2021-11-07 09:11:16,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997202682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:11:16,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:11:16,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-07 09:11:16,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408155321] [2021-11-07 09:11:16,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:11:16,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 09:11:16,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:11:16,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 09:11:16,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-11-07 09:11:16,499 INFO L87 Difference]: Start difference. First operand 196 states and 200 transitions. Second operand has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 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) [2021-11-07 09:11:18,558 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 [] [2021-11-07 09:11:20,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:22,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:24,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:27,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:29,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:31,383 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:33,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:35,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:37,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:39,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:42,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:44,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:01,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:12:01,201 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2021-11-07 09:12:01,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-07 09:12:01,202 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 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 [2021-11-07 09:12:01,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:12:01,202 INFO L225 Difference]: With dead ends: 223 [2021-11-07 09:12:01,202 INFO L226 Difference]: Without dead ends: 221 [2021-11-07 09:12:01,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 15990.87ms TimeCoverageRelationStatistics Valid=588, Invalid=2834, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 09:12:01,203 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 850 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 134 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29648.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.60ms SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31628.58ms IncrementalHoareTripleChecker+Time [2021-11-07 09:12:01,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 1089 Invalid, 1350 Unknown, 0 Unchecked, 13.60ms Time], IncrementalHoareTripleChecker [134 Valid, 1203 Invalid, 13 Unknown, 0 Unchecked, 31628.58ms Time] [2021-11-07 09:12:01,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-07 09:12:01,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 201. [2021-11-07 09:12:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 196 states have (on average 1.0459183673469388) internal successors, (205), 200 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:12:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 205 transitions. [2021-11-07 09:12:01,218 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 205 transitions. Word has length 79 [2021-11-07 09:12:01,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:12:01,218 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 205 transitions. [2021-11-07 09:12:01,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 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) [2021-11-07 09:12:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 205 transitions. [2021-11-07 09:12:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 09:12:01,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:12:01,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:12:01,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-07 09:12:01,219 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:12:01,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:12:01,220 INFO L85 PathProgramCache]: Analyzing trace with hash 711781694, now seen corresponding path program 1 times [2021-11-07 09:12:01,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:12:01,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311218552] [2021-11-07 09:12:01,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:12:01,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:12:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:12:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:12:12,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:12:12,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311218552] [2021-11-07 09:12:12,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311218552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:12:12,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:12:12,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 09:12:12,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475125160] [2021-11-07 09:12:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:12:12,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 09:12:12,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:12:12,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 09:12:12,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-11-07 09:12:12,439 INFO L87 Difference]: Start difference. First operand 201 states and 205 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:12:14,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:16,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:18,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:20,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:23,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:25,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:27,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:29,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:31,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:39,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:12:39,176 INFO L93 Difference]: Finished difference Result 207 states and 210 transitions. [2021-11-07 09:12:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 09:12:39,176 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 09:12:39,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:12:39,177 INFO L225 Difference]: With dead ends: 207 [2021-11-07 09:12:39,177 INFO L226 Difference]: Without dead ends: 136 [2021-11-07 09:12:39,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 7282.51ms TimeCoverageRelationStatistics Valid=275, Invalid=1057, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 09:12:39,178 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 491 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 76 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20089.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.81ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21429.31ms IncrementalHoareTripleChecker+Time [2021-11-07 09:12:39,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 703 Invalid, 603 Unknown, 0 Unchecked, 6.81ms Time], IncrementalHoareTripleChecker [76 Valid, 518 Invalid, 9 Unknown, 0 Unchecked, 21429.31ms Time] [2021-11-07 09:12:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-07 09:12:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-07 09:12:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.0458015267175573) internal successors, (137), 135 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:12:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2021-11-07 09:12:39,184 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 81 [2021-11-07 09:12:39,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:12:39,184 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2021-11-07 09:12:39,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:12:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2021-11-07 09:12:39,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 09:12:39,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:12:39,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:12:39,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-07 09:12:39,185 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:12:39,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:12:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1067345896, now seen corresponding path program 1 times [2021-11-07 09:12:39,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:12:39,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896075648] [2021-11-07 09:12:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:12:39,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:12:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:12:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:12:42,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:12:42,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896075648] [2021-11-07 09:12:42,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896075648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:12:42,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:12:42,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 09:12:42,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119156940] [2021-11-07 09:12:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:12:42,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:12:42,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:12:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:12:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:12:42,008 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:12:44,054 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 [] [2021-11-07 09:12:46,187 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:48,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:50,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:52,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:54,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:56,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:59,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:01,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:03,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:05,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:13:05,624 INFO L93 Difference]: Finished difference Result 136 states and 137 transitions. [2021-11-07 09:13:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:13:05,625 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 09:13:05,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:13:05,625 INFO L225 Difference]: With dead ends: 136 [2021-11-07 09:13:05,625 INFO L226 Difference]: Without dead ends: 123 [2021-11-07 09:13:05,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2226.87ms TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2021-11-07 09:13:05,626 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 291 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 37 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21169.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22600.64ms IncrementalHoareTripleChecker+Time [2021-11-07 09:13:05,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 494 Invalid, 407 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [37 Valid, 360 Invalid, 10 Unknown, 0 Unchecked, 22600.64ms Time] [2021-11-07 09:13:05,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-07 09:13:05,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-07 09:13:05,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 121 states have (on average 1.024793388429752) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:13:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2021-11-07 09:13:05,632 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 81 [2021-11-07 09:13:05,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:13:05,632 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2021-11-07 09:13:05,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:13:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2021-11-07 09:13:05,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 09:13:05,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:13:05,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:13:05,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-07 09:13:05,633 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:13:05,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:13:05,633 INFO L85 PathProgramCache]: Analyzing trace with hash 813584261, now seen corresponding path program 1 times [2021-11-07 09:13:05,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:13:05,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554042767] [2021-11-07 09:13:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:13:05,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:13:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:13:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:13:09,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:13:09,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554042767] [2021-11-07 09:13:09,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554042767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:13:09,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:13:09,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 09:13:09,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102277670] [2021-11-07 09:13:09,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:13:09,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 09:13:09,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:13:09,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 09:13:09,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:13:09,681 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:13:11,726 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 [] [2021-11-07 09:13:13,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:15,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:18,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:20,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:22,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:24,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:13:24,308 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2021-11-07 09:13:24,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:13:24,309 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 09:13:24,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:13:24,309 INFO L225 Difference]: With dead ends: 123 [2021-11-07 09:13:24,309 INFO L226 Difference]: Without dead ends: 99 [2021-11-07 09:13:24,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1782.23ms TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:13:24,310 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 167 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 23 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12975.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.34ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13803.60ms IncrementalHoareTripleChecker+Time [2021-11-07 09:13:24,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 384 Invalid, 358 Unknown, 0 Unchecked, 3.34ms Time], IncrementalHoareTripleChecker [23 Valid, 329 Invalid, 6 Unknown, 0 Unchecked, 13803.60ms Time] [2021-11-07 09:13:24,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-07 09:13:24,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2021-11-07 09:13:24,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 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) [2021-11-07 09:13:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-11-07 09:13:24,314 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 81 [2021-11-07 09:13:24,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:13:24,314 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-11-07 09:13:24,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:13:24,314 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-11-07 09:13:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 09:13:24,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:13:24,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:13:24,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-07 09:13:24,315 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 09:13:24,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:13:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash -128599946, now seen corresponding path program 1 times [2021-11-07 09:13:24,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:13:24,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139584103] [2021-11-07 09:13:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:13:24,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:13:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:13:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:13:32,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:13:32,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139584103] [2021-11-07 09:13:32,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139584103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:13:32,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:13:32,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-07 09:13:32,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165891147] [2021-11-07 09:13:32,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:13:32,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 09:13:32,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:13:32,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 09:13:32,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2021-11-07 09:13:32,717 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 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) [2021-11-07 09:13:34,759 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 [] [2021-11-07 09:13:36,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:39,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:41,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:43,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:45,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:47,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:49,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:51,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:53,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:56,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:58,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:14:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:14:02,733 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2021-11-07 09:14:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 09:14:02,733 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 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 [2021-11-07 09:14:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:14:02,733 INFO L225 Difference]: With dead ends: 92 [2021-11-07 09:14:02,733 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 09:14:02,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 5733.43ms TimeCoverageRelationStatistics Valid=196, Invalid=1286, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 09:14:02,734 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 377 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 46 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25869.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.20ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27426.30ms IncrementalHoareTripleChecker+Time [2021-11-07 09:14:02,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 597 Invalid, 652 Unknown, 0 Unchecked, 6.20ms Time], IncrementalHoareTripleChecker [46 Valid, 594 Invalid, 12 Unknown, 0 Unchecked, 27426.30ms Time] [2021-11-07 09:14:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 09:14:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 09:14:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:14:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 09:14:02,735 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2021-11-07 09:14:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:14:02,735 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 09:14:02,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 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) [2021-11-07 09:14:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 09:14:02,736 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 09:14:02,737 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 10 remaining) [2021-11-07 09:14:02,738 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2021-11-07 09:14:02,738 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2021-11-07 09:14:02,738 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2021-11-07 09:14:02,738 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2021-11-07 09:14:02,738 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2021-11-07 09:14:02,738 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2021-11-07 09:14:02,738 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2021-11-07 09:14:02,739 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2021-11-07 09:14:02,739 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2021-11-07 09:14:02,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-07 09:14:02,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Killed by 15